比如我在北京我尝试nslookup www.qq.com 202.96.128.166(广东电信dns)未查询不出结果
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ncisoft 2015-04-06 22:42:01 +08:00 via iPad
大部分都是的
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xiaozhizhu1997 2015-04-06 22:42:38 +08:00
很多地区都是,但有的不是。
主要是为了最大限度防止被flood攻击,以前各省DNS都有被打挂过的历史。 |
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holinhot OP @xiaozhizhu1997 看来是的,我试了大部分地区都不行
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xiaozhizhu1997 2015-04-06 22:51:26 +08:00
@louishothot 我记得江西电信那个可以的。
另外不仅是本区域,还得是本网。我直隶电信试着访问直隶联通DNS(202.99.166.4)会被refuse |
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LoliconInside 2015-04-06 23:15:37 +08:00
C:\Windows\System32\nslookup
> server 210.22.70.225 默认服务器: backup.sh.cnc171.net Address: 210.22.70.225 > baidu.com 服务器: backup.sh.cnc171.net Address: 210.22.70.225 DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. *** 请求 backup.sh.cnc171.net 超时 > 我是上海电信的,使用上海联通的DNS无法解析到结果。 |
6
frjalex 2015-04-06 23:18:48 +08:00
基本上除了标记是Public DNS的都会做区域限制。
如OpenDNS, GoogleDNS, V2EX, 阿里DNS和自己的山寨DNS都没有设限制。 |
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holinhot OP @LoliconInside 运营商不同肯定限制啊
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LoliconInside 2015-04-06 23:23:33 +08:00
@louishothot 给个其他地区电信的DNS我试试
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lsylsy2 2015-04-06 23:35:04 +08:00
做限制是为了安全考虑。
谷歌“DNS放大攻击” |
10
holinhot OP @LoliconInside 202.96.128.166
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11
snachx 2015-04-07 07:56:25 +08:00 via iPhone
http://ip.cn/dns.html
这里列了各地DNS,至少江苏是限本地 |
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LoliconInside 2015-04-07 12:20:46 +08:00
C:\Windows\System32\nslookup
> server 202.96.128.166 DNS request timed out. timeout was 2 seconds. 默认服务器: [202.96.128.166] Address: 202.96.128.166 > baidu.com 服务器: [202.96.128.166] Address: 202.96.128.166 DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. *** 请求 [202.96.128.166] 超时 > @louishothot |
13
LoliconInside 2015-04-07 12:21:58 +08:00
@snachx 这网站有报错的地方吗?上海电信的DNS地址有个写错了
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14
snachx 2015-04-07 19:10:10 +08:00 via iPhone
@LoliconInside 似乎没有可以反馈的地方
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402645707 2015-04-07 20:39:47 +08:00 via Android
运营商的dns不应该是内网的吗?
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yexm0 2015-04-08 08:31:05 +08:00 via Android
内网??????
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