namebench 可以帮你寻找你的电脑能访问的最快的DNS服务器，通过测试并输出详细的图形报表告诉你，为什么所选择的DNS服务器是最快的。

为了获取最贴近实际情况的数字，namebench会自动调用用户浏览器的浏览历史来进行测试。此外，软件还会自动检测不同IP之间的缓存共享关系并移除速度最慢的服务器来避免不准确的测试结果。

namebench现在有Windows/Mac OS X/Linux版本。

  http://code.google.com/p/namebench/

 

Final list of nameservers considered:
------------------------------------------------------------------------------
130.85.1.5      UMBC 5 US          56  ms |
208.67.222.220  OpenDNS-3          56  ms | www.google.com is hijacked: google.navigation.opendns.com
209.244.0.4     Level3-R2          62  ms |
216.146.35.35   DynGuide           63  ms | NXDOMAIN Hijacking
204.9.56.9      BroadAspect US     63  ms |
8.8.4.4         Google Public DNS- 64  ms | Replica of Google Public DNS [8.8.8.8]
208.67.220.220  OpenDNS            65  ms | www.google.com is hijacked: google.navigation.opendns.com
156.154.70.1    UltraDNS           67  ms | NXDOMAIN Hijacking
127.0.0.1       Localhost IPv4     68  ms | NXDOMAIN Hijacking (www)
209.18.47.61    RoadRunner NC US   68  ms | Replica of RoadRunner NC-2 US [209.18.47.62], NXDOMAIN Hijacking (www)
156.154.71.22   Comodo Secure DNS- 80  ms | NXDOMAIN Hijacking
209.18.47.62    RoadRunner NC-2 US 104 ms | (excluded: Slower replica of RoadRunner NC US [209.18.47.61])

- Sending 250 queries to 11 servers...

Mean response (in milliseconds):
--------------------------------
Google Public DN ################# 64.85
Comodo Secure DN ################### 72.84
RoadRunner NC US ####################### 91.19
UltraDNS         ####################### 91.61
Localhost IPv4   ########################### 108.66
OpenDNS          ############################ 110.69
OpenDNS-3        ###################################### 149.85
DynGuide         ####################################### 156.60
Level3-R2        ########################################### 169.81
UMBC 5 US        ########################################### 172.63
BroadAspect US   ##################################################### 214.19

Response Distribution Chart URL (200ms):
----------------------------------------
http://chart.apis.google.com/chart?cht=lxy&chs=720x415&chxt=x,y&chg=10,20&chxr=0,0,200|1,0,100&chd=t:0,8,8,9,10,1...

Response Distribution Chart URL (Full):
---------------------------------------
http://chart.apis.google.com/chart?cht=lxy&chs=720x415&chxt=x,y&chg=10,20&chxr=0,0,3500|1,0,100&chd=t:0,0,0,1,1,1...

Recommended configuration (fastest + nearest):
----------------------------------------------
nameserver 8.8.4.4         # Google Public DNS-2  
nameserver 127.0.0.1       # Localhost IPv4  
nameserver 209.18.47.62    # RoadRunner NC-2 US  

转载于:https://blog.51cto.com/vn98z/908522