DNS除錯，有時明明網址沒錯，就是上不了網，也許是DNS有錯哦!!

DNS查詢 除錯的好網站：DNS traversal checker

利用它，就可以查出DNS哪兒出錯。也我的例子：我要去http://arbitrator.arbitration.org.tw/，但都上不去，所以我去查了一下，結果真的出現問題，結果參考如下：

Name	arbitrator.arbitration.org.tw
Type	A
Date	2012-01-02 08:43:03 UTC
Progress	1.6.2 - arbitrator.arbitration.org.tw 56%

Summary

40% resulted in an exception

60% resulted in an error

Results

20.0% No such domain (NXDOMAIN) at admns2.hinet.net (168.95.1.11)

20.0% No such domain (NXDOMAIN) at admns1.hinet.net (168.95.192.11)

5.0% No such domain (NXDOMAIN) at ns2.dynamicnetworkservices.net (204.13.250.100)

While querying ns2.everydns.net/IN/A

5.0% No such domain (NXDOMAIN) at ns4.dynamicnetworkservices.net (204.13.251.100)

While querying ns2.everydns.net/IN/A

5.0% No such domain (NXDOMAIN) at ns1.dynamicnetworkservices.net (208.78.70.100)

While querying ns2.everydns.net/IN/A

5.0% No such domain (NXDOMAIN) at ns3.dynamicnetworkservices.net (208.78.71.100)

While querying ns2.everydns.net/IN/A

20.0% Query timed out at ns1.everydns.net (208.76.61.100)

20.0% Query timed out at arbitrator.arbitration.org.tw (59.124.95.59)

正常的樣子，就請自行至該網測試一下嚕!!!