DNS Server Issues in China
149 DNS servers in China with detected issues. These servers respond to probes but have problems that may affect usability.
Last updated: · All countries
Servers with issues
149 servers
| IP | ASN | Organization | Issue | Description | Reliability |
|---|---|---|---|---|---|
202.46.33.250
|
AS24413 | 263 Shanghai Communications Ltd. | BAD_RESPONSE | Returns unexpected response codes | 14% |
103.251.105.188
|
AS4766 | Korea Telecom | BAD_RESPONSE | Returns unexpected response codes | 2% |
121.11.163.58
|
AS4134 | Chinanet | BAD_RESPONSE | Returns unexpected response codes | 2% |
59.74.32.2
|
AS4538 | China Education and Research Network Center | BAD_RESPONSE | Returns unexpected response codes | 1% |
59.70.14.250
|
AS4538 | China Education and Research Network Center | BAD_RESPONSE | Returns unexpected response codes | 1% |
58.198.24.8
|
AS4538 | China Education and Research Network Center | BAD_RESPONSE | Returns unexpected response codes | 1% |
52.82.176.1
|
AS135629 | Ningxia West Cloud Data Technology Co.Ltd. | BAD_RESPONSE | Returns unexpected response codes | 1% |
52.82.176.0
|
AS135629 | Ningxia West Cloud Data Technology Co.Ltd. | BAD_RESPONSE | Returns unexpected response codes | 1% |
52.82.176.100
|
AS135629 | Ningxia West Cloud Data Technology Co.Ltd. | BAD_RESPONSE | Returns unexpected response codes | 1% |
223.4.70.30
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | BAD_RESPONSE | Returns unexpected response codes | 1% |
122.9.39.5
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
122.9.30.75
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
122.9.31.4
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
122.9.31.24
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
115.156.33.131
|
AS4538 | China Education and Research Network Center | BAD_RESPONSE | Returns unexpected response codes | 1% |
114.116.211.44
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
114.115.192.220
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
114.115.202.125
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
114.115.192.215
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
114.115.192.216
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
114.115.192.219
|
AS4808 | China Unicom Beijing Province Network | BAD_RESPONSE | Returns unexpected response codes | 1% |
112.124.246.5
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | BAD_RESPONSE | Returns unexpected response codes | 1% |
112.124.247.92
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | BAD_RESPONSE | Returns unexpected response codes | 1% |
112.124.246.160
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | BAD_RESPONSE | Returns unexpected response codes | 1% |
111.161.118.227
|
AS4837 | CHINA UNICOM China169 Backbone | BAD_RESPONSE | Returns unexpected response codes | 1% |
111.161.118.239
|
AS4837 | CHINA UNICOM China169 Backbone | BAD_RESPONSE | Returns unexpected response codes | 1% |
111.161.118.150
|
AS4837 | CHINA UNICOM China169 Backbone | BAD_RESPONSE | Returns unexpected response codes | 1% |
111.116.64.131
|
AS4538 | China Education and Research Network Center | BAD_RESPONSE | Returns unexpected response codes | 1% |
110.64.207.3
|
AS4538 | China Education and Research Network Center | BAD_RESPONSE | Returns unexpected response codes | 1% |
110.64.207.33
|
AS4538 | China Education and Research Network Center | BAD_RESPONSE | Returns unexpected response codes | 1% |
223.6.6.72
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.68
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.34
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.82
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.81
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.196
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.84
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.195
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.245
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.191
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.184
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.48
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.78
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.183
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.139
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.46
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.232
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.133
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.170
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.43
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.204
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.51
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.0
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.50
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.93
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.41
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.91
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.4
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.13
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.224
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.219
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.129
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.31
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.163
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.248
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.112
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.157
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.151
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.187
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.5.5.0
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
120.53.53.183
|
AS45090 | Shenzhen Tencent Computer Systems Company Limited | CENSORED | Censors or filters certain domains | 100% |
114.114.115.115
|
AS174 | COGENT-174 | CENSORED | Censors or filters certain domains | 100% |
1.12.13.53
|
AS45090 | Shenzhen Tencent Computer Systems Company Limited | CENSORED | Censors or filters certain domains | 100% |
121.4.4.41
|
AS45090 | Shenzhen Tencent Computer Systems Company Limited | CENSORED | Censors or filters certain domains | 100% |
120.53.53.198
|
AS45090 | Shenzhen Tencent Computer Systems Company Limited | CENSORED | Censors or filters certain domains | 100% |
120.53.53.54
|
AS45090 | Shenzhen Tencent Computer Systems Company Limited | CENSORED | Censors or filters certain domains | 100% |
47.94.250.172
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
47.101.140.66
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
47.100.97.252
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
47.107.228.67
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
47.107.175.54
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.80
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.78
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.66
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.64
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.62
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.51
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 100% |
139.198.14.109
|
AS59078 | Yunify Technologies Inc. | CENSORED | Censors or filters certain domains | 100% |
139.196.146.28
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
119.29.29.29
|
AS132203 | Tencent Building, Kejizhongyi Avenue | CENSORED | Censors or filters certain domains | 100% |
119.23.70.145
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
118.178.137.75
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
116.63.8.132
|
AS4808 | China Unicom Beijing Province Network | CENSORED | Censors or filters certain domains | 100% |
112.126.119.0
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
103.215.140.218
|
AS58519 | Cloud Computing Corporation | CENSORED | Censors or filters certain domains | 100% |
101.200.231.132
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
223.6.6.198
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 100% |
114.114.114.114
|
AS174 | COGENT-174 | CENSORED | Censors or filters certain domains | 100% |
114.114.115.119
|
AS174 | COGENT-174 | CENSORED | Censors or filters certain domains | 100% |
101.226.4.6
|
AS4811 | China Telecom Group | CENSORED | Censors or filters certain domains | 100% |
124.71.161.214
|
AS55990 | Huawei Cloud Service data center | CENSORED | Censors or filters certain domains | 99% |
120.55.249.49
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 99% |
223.6.6.237
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 99% |
223.5.5.190
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 99% |
47.100.40.208
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 99% |
223.6.6.241
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 99% |
223.5.5.59
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 99% |
180.76.76.76
|
AS55967 | Beijing Baidu Netcom Science and Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 99% |
120.53.53.116
|
AS45090 | Shenzhen Tencent Computer Systems Company Limited | CENSORED | Censors or filters certain domains | 99% |
223.6.6.127
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 99% |
182.92.205.104
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 98% |
223.5.5.64
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 98% |
223.5.5.123
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 98% |
47.102.104.109
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 98% |
223.5.5.38
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 98% |
223.5.5.204
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 97% |
223.5.5.82
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 97% |
47.94.220.139
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 96% |
223.5.5.47
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 96% |
223.5.5.45
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 96% |
223.6.6.151
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 96% |
223.5.5.17
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 96% |
223.5.5.170
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 95% |
114.215.204.185
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 95% |
223.5.5.241
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 95% |
223.5.5.159
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 95% |
223.5.5.252
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 95% |
223.5.5.228
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 94% |
223.5.5.5
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 94% |
8.130.183.115
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 94% |
223.6.6.169
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 93% |
182.92.82.171
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 93% |
47.108.74.175
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 93% |
223.6.6.54
|
AS45102 | Alibaba US Technology Co., Ltd. | CENSORED | Censors or filters certain domains | 92% |
223.6.6.253
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 92% |
223.5.5.70
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 92% |
223.6.6.199
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 92% |
223.5.5.231
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 92% |
218.30.118.6
|
AS141679 | China Telecom Beijing Tianjin Hebei Big Data Industry Park Branch | CENSORED | Censors or filters certain domains | 91% |
223.6.6.41
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 90% |
223.6.6.56
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 88% |
47.102.205.181
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 88% |
47.108.167.201
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 78% |
47.109.96.248
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 61% |
106.14.133.197
|
AS37963 | Hangzhou Alibaba Advertising Co.,Ltd. | CENSORED | Censors or filters certain domains | 41% |
61.152.173.66
|
AS4812 | China Telecom Group | CENSORED | Censors or filters certain domains | 36% |
140.206.73.2
|
AS17621 | China Unicom Shanghai network | CENSORED | Censors or filters certain domains | 36% |
106.12.173.222
|
AS38365 | Beijing Baidu Netcom Science and Technology Co., Ltd. | NX_HIJACK | Hijacks NXDOMAIN responses — redirects failed lookups | 100% |
1.92.99.175
|
AS55990 | Huawei Cloud Service data center | NX_HIJACK | Hijacks NXDOMAIN responses — redirects failed lookups | 97% |
What do these issues mean?
- REFUSED — Server is online but refuses queries from outside its network. Likely an ISP resolver that only serves its own subscribers.
- NX_HIJACK — Server works but redirects non-existent domain lookups to its own IP, typically showing ads instead of an error.
- SERVFAIL — Server responds but returns internal errors. May be misconfigured or overloaded.
- NETWORK_ERROR — Connection to the server failed at the network level.
- NO_ANSWER — Server responds to the query but provides no answer data.
- CENSORED — Server returns different results for certain domains compared to neutral resolvers.