最基本的物质需求得到满足之后，唯一能够不断增加个人幸福感的事情就是帮助他人

C:\Documents and Settings\Administrator>nslookup
*** Can't find server name for address 192.168.51.2: Non-existent domain
*** Default servers are not available
Default Server: UnKnown
Address: 192.168.51.2

> server 202.96.128.86（指定广东电信dns服务器）
Default Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com
Addresses: 119.147.15.17, 119.147.74.18, 119.147.15.13（解析正确）

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com.localdomain（加.localdomain）
Address: 59.37.71.87（电信dns封堵ip）

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com.localdomain（加.localdomain）
Address: 59.37.53.10（电信dns封堵ip）

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com
Addresses: 119.147.15.13, 119.147.15.17, 119.147.74.18（解析正确）

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com.localdomain（加.localdomain）
Address: 59.37.53.10（电信dns封堵ip）

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com.localdomain（加.localdomain）
Address: 59.37.53.10（电信dns封堵ip）

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com.localdomain（加.localdomain）
Address: 59.37.53.10（电信dns封堵ip）

> www.qq.com
Server: cache-a.guangzhou.gd.cn
Address: 202.96.128.86

Non-authoritative answer:
Name: www.qq.com
Addresses: 119.147.15.17, 119.147.74.18, 119.147.15.13

> server 208.67.222.222（opendns）
Default Server: resolver1.opendns.com
Address: 208.67.222.222

> www.qq.com
Server: resolver1.opendns.com
Address: 208.67.222.222

Non-authoritative answer:
Name: www.qq.com.localdomain（加.localdomain）
Address: 208.67.219.132（错误结果）

> www.qq.com
Server: resolver1.opendns.com
Address: 208.67.222.222

Non-authoritative answer:
Name: www.qq.com.localdomain
Address: 208.67.219.132

> www.qq.com.
Server: resolver1.opendns.com
Address: 208.67.222.222

Non-authoritative answer:
Name: www.qq.com
Addresses: 60.28.14.158, 60.28.14.159（解析正确）

> www.qq.com.（后面加“.”表示域名根）
Server: resolver1.opendns.com
Address: 208.67.222.222

Non-authoritative answer:
Name: www.qq.com
Addresses: 60.28.14.159, 60.28.14.158（解析正确）

windows下的nslookup使用时遇到一些问题，用特定域名服务器对www.qq.com进行解析时，程序会自动在待解析域名后添加.localdomain，变成www.qq.com.localdomain，解析结果就混乱了，用广东电信DNS服务器解析时，解析结果为广东电信DNS劫持的IP地址。用Opendns服务器208.67.222.222解析时也存在同样问题。要确保每次正确解析，需要在代解析域名后添加表示域名根的“.”，即www.qq.com.。详见举例。

标签： windows nslookup problem