为什么连不上Google服务器？

{卡尔云官网 www.kaeryun.com}

我们可能发现无法连接到Google服务器，比如在网页上输入https://www.google.com时，总是显示无法连接，这种问题可能让人感到困惑，因为Google服务器应该是全球性的，但实际情况可能并非如此，为什么连不上Google服务器呢？我们来一步步分析这个问题。

---

网络连接问题

最直接的原因可能是网络连接问题，Google服务器分布在世界各地，但要连接到它们，需要通过互联网的路由系统，如果您的网络出现以下问题,就可能导致无法连接到Google服务器：

1. Wi-Fi信号差：如果您使用Wi-Fi连接到路由器，但信号较弱或覆盖范围有限，可能无法连接到足够多的Google服务器，如果您在室内使用Wi-Fi，而Google服务器主要分布在美国和欧洲,可能无法连接到足够的服务器。

2. 网络不稳定：如果您的网络不稳定（如断线、延迟过大或带宽不足）,可能会影响连接到Google服务器的性能。

3. 网络信号丢失：由于设备故障或干扰，信号可能会丢失,导致无法连接到Google服务器。

---

DNS解析问题

DNS（域名系统）是连接到Google服务器的关键，即使您的网络没问题，但DNS解析失败，也可能导致无法连接,以下是一些常见的DNS解析问题：

1. DNS服务器故障：Google服务器依赖于全球的DNS服务器网络，如果某些DNS服务器出现故障，可能会影响访问Google的某些服务，如果您尝试访问某个特定的Google服务，可能需要特定的DNS服务器，如果该服务器故障,就可能无法访问。

2. DNS缓存问题：您的浏览器或设备可能缓存了错误的DNS记录，导致无法正确解析到Google服务器,清理浏览器缓存或重新登录设备可能解决问题。

3. DNS A记录错误：Google服务器的A记录（AAAA record）是DNS解析的关键，如果A记录错误，可能无法正确解析到Google的IP地址，如果您尝试访问https://www.google.com，可能需要特定的A记录，如果该记录错误,就可能无法连接。

---

DNSSEC问题

DNSSEC（DNS Security Extensions）是一种用于验证DNS记录真实性的机制，虽然大多数情况下，DNSSEC不会影响到访问Google服务器，但如果您的网络配置了DNSSEC，可能会导致访问缓慢或异常，这种情况通常发生在大型企业网络中，如果您使用的是独立的个人设备,可能不需要担心这个问题。

---

DNS MX记录问题

即使您成功找到了正确的DNS记录，但Google服务器可能无法响应,这种情况通常发生在以下情况下：

1. DNS MX记录错误：MX记录是DNS解析到Google服务器的首选IP地址，如果MX记录错误,可能无法正确解析到Google的IP地址。

2. Google服务器故障：虽然罕见，但Google服务器偶尔会出现故障,可能导致无法连接。

---

安全问题

Google服务器还受到防火墙和DNS过滤的影响，如果您使用的是内部网络，可能被防火墙或DNS过滤 blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking blocking