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DNS Server Issues in United States

200 DNS servers in United States with detected issues. These servers respond to probes but have problems that may affect usability.

Last updated: · All countries

Servers with issues

200 servers
IP ASN Organization Issue Description Reliability
96.72.81.89
AS7922 COMCAST-7922 BAD_RESPONSE Returns unexpected response codes 85%
173.223.98.129
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 81%
169.44.148.180
AS36351 IBM Cloud BAD_RESPONSE Returns unexpected response codes 81%
169.44.148.181
AS36351 IBM Cloud BAD_RESPONSE Returns unexpected response codes 81%
169.44.148.182
AS36351 IBM Cloud BAD_RESPONSE Returns unexpected response codes 81%
169.44.148.183
AS36351 IBM Cloud BAD_RESPONSE Returns unexpected response codes 81%
107.172.32.66
AS36352 HostPapa BAD_RESPONSE Returns unexpected response codes 81%
40.114.69.73
AS8075 MICROSOFT-CORP-MSN-AS-BLOCK BAD_RESPONSE Returns unexpected response codes 78%
208.97.140.7
AS26347 New Dream Network, LLC BAD_RESPONSE Returns unexpected response codes 78%
68.65.121.36
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 77%
34.3.136.240
AS214611 Google Cloud EMEA Ltd BAD_RESPONSE Returns unexpected response codes 76%
156.154.71.55
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 74%
68.178.160.237
AS26496 GoDaddy.com, LLC BAD_RESPONSE Returns unexpected response codes 73%
173.223.99.185
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 73%
173.223.98.185
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 73%
173.223.98.18
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 73%
156.154.71.51
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 71%
156.154.71.57
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 71%
23.59.248.5
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 70%
50.79.154.34
AS7922 COMCAST-7922 BAD_RESPONSE Returns unexpected response codes 67%
156.154.71.64
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 66%
64.64.230.127
AS25820 IT7 Networks Inc BAD_RESPONSE Returns unexpected response codes 66%
154.16.118.53
AS14670 WHG Hosting Services Ltd BAD_RESPONSE Returns unexpected response codes 66%
96.7.136.82
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 63%
173.223.99.45
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 63%
156.154.71.54
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 63%
173.223.99.175
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 61%
173.223.99.122
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 60%
156.154.70.1
AS397213 ULTRADNS BAD_RESPONSE Returns unexpected response codes 59%
104.168.163.86
AS54290 Hostwinds LLC. BAD_RESPONSE Returns unexpected response codes 59%
172.93.51.52
AS29802 HIVELOCITY, Inc. BAD_RESPONSE Returns unexpected response codes 59%
170.249.217.42
AS63410 PrivateSystems Networks BAD_RESPONSE Returns unexpected response codes 59%
170.249.217.43
AS63410 PrivateSystems Networks BAD_RESPONSE Returns unexpected response codes 59%
170.249.217.44
AS63410 PrivateSystems Networks BAD_RESPONSE Returns unexpected response codes 59%
170.249.217.45
AS63410 PrivateSystems Networks BAD_RESPONSE Returns unexpected response codes 59%
170.249.217.46
AS63410 PrivateSystems Networks BAD_RESPONSE Returns unexpected response codes 59%
156.154.70.12
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 59%
173.223.99.134
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 59%
156.154.70.10
AS397213 SECURITYSERVICES BAD_RESPONSE Returns unexpected response codes 59%
156.154.70.11
AS397213 ULTRADNS BAD_RESPONSE Returns unexpected response codes 59%
173.223.98.23
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 59%
156.154.71.7
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 58%
156.154.71.61
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 57%
173.223.98.114
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 57%
156.154.71.62
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 57%
23.216.52.47
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 56%
173.223.99.232
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 56%
173.223.98.192
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 55%
173.223.99.181
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 55%
173.223.98.118
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 55%
156.154.71.60
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 55%
23.216.53.151
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 54%
173.223.99.222
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 54%
173.223.99.246
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 54%
173.223.98.122
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 54%
156.154.71.59
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 53%
173.223.99.129
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 53%
173.223.99.83
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 53%
173.223.98.33
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 52%
156.154.71.56
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 52%
173.223.99.19
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 52%
96.7.137.102
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 51%
96.7.136.10
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 50%
173.223.98.0
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 49%
96.7.137.107
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 49%
96.7.136.0
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 48%
40.124.128.214
AS8075 Microsoft Corporation BAD_RESPONSE Returns unexpected response codes 48%
23.134.252.2
AS401345 ErnesTech LLC BAD_RESPONSE Returns unexpected response codes 48%
206.189.189.200
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 48%
20.168.24.22
AS8075 Microsoft Corporation BAD_RESPONSE Returns unexpected response codes 48%
168.235.79.83
AS3842 InMotion Hosting, Inc. BAD_RESPONSE Returns unexpected response codes 48%
143.198.245.140
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 48%
143.110.230.121
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 48%
96.7.137.132
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 48%
173.223.99.21
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 48%
173.223.99.33
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 48%
173.223.99.92
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 45%
173.223.98.146
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 45%
203.161.48.23
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 44%
173.223.98.19
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 44%
147.182.160.87
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 43%
206.209.230.117
AS16910 Farm Credit Financial Partners, Inc. BAD_RESPONSE Returns unexpected response codes 43%
206.209.234.117
AS16910 Farm Credit Financial Partners, Inc. BAD_RESPONSE Returns unexpected response codes 43%
96.7.137.82
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 42%
199.192.28.170
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 42%
23.216.53.255
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 40%
173.223.99.80
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 40%
104.131.174.72
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 39%
157.230.7.86
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 39%
54.235.14.52
AS14618 Amazon.com, Inc. BAD_RESPONSE Returns unexpected response codes 38%
67.205.159.12
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 35%
45.26.72.177
AS7018 AT&T Enterprises, LLC BAD_RESPONSE Returns unexpected response codes 35%
172.105.156.141
AS63949 Akamai Connected Cloud BAD_RESPONSE Returns unexpected response codes 35%
173.208.187.242
AS32097 WholeSale Internet, Inc. BAD_RESPONSE Returns unexpected response codes 34%
162.254.38.208
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 33%
128.238.2.38
AS54965 NYU-POLY BAD_RESPONSE Returns unexpected response codes 31%
23.235.201.188
AS54641 InMotion Hosting, Inc. BAD_RESPONSE Returns unexpected response codes 31%
23.235.201.201
AS54641 InMotion Hosting, Inc. BAD_RESPONSE Returns unexpected response codes 31%
213.165.236.157
AS54641 InMotion Hosting, Inc. BAD_RESPONSE Returns unexpected response codes 31%
173.223.99.251
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 29%
162.254.32.22
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 28%
107.172.1.242
AS36352 HostPapa BAD_RESPONSE Returns unexpected response codes 28%
154.38.170.204
AS40021 Contabo Inc. BAD_RESPONSE Returns unexpected response codes 28%
66.25.11.69
AS11427 TWC-11427-TEXAS BAD_RESPONSE Returns unexpected response codes 26%
74.207.236.107
AS63949 Akamai Connected Cloud BAD_RESPONSE Returns unexpected response codes 25%
204.10.203.184
AS395088 Convergia, inc BAD_RESPONSE Returns unexpected response codes 25%
104.36.110.192
AS53914 Genesis Hosting Solutions, LLC BAD_RESPONSE Returns unexpected response codes 23%
192.119.111.160
AS54290 Hostwinds LLC. BAD_RESPONSE Returns unexpected response codes 23%
208.25.96.3
AS22200 Bloomingdale Communications Inc. BAD_RESPONSE Returns unexpected response codes 21%
216.126.220.4
AS7018 ATT-INTERNET4 BAD_RESPONSE Returns unexpected response codes 21%
54.208.120.85
AS14618 Amazon.com, Inc. BAD_RESPONSE Returns unexpected response codes 20%
160.238.36.244
AS47583 Hostinger International Limited BAD_RESPONSE Returns unexpected response codes 19%
96.7.137.168
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 19%
157.230.209.130
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 19%
54.208.108.228
AS14618 Amazon.com, Inc. BAD_RESPONSE Returns unexpected response codes 16%
129.158.246.32
AS31898 Oracle Corporation BAD_RESPONSE Returns unexpected response codes 16%
96.7.137.64
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 15%
96.7.136.64
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 15%
169.47.252.4
AS36351 IBM Cloud BAD_RESPONSE Returns unexpected response codes 15%
216.139.32.45
AS4307 SOUTH VALLEY INTERNET BAD_RESPONSE Returns unexpected response codes 15%
156.154.71.20
AS397215 SECURITYSERVICES BAD_RESPONSE Returns unexpected response codes 15%
192.169.154.227
AS398101 GO-DADDY-COM-LLC BAD_RESPONSE Returns unexpected response codes 14%
68.178.163.171
AS26496 GoDaddy.com, LLC BAD_RESPONSE Returns unexpected response codes 13%
173.234.25.154
AS63018 Dedicated.com BAD_RESPONSE Returns unexpected response codes 13%
173.234.25.155
AS63018 Dedicated.com BAD_RESPONSE Returns unexpected response codes 13%
173.234.25.156
AS63018 Dedicated.com BAD_RESPONSE Returns unexpected response codes 13%
173.234.25.157
AS63018 Dedicated.com BAD_RESPONSE Returns unexpected response codes 13%
173.234.25.158
AS63018 Dedicated.com BAD_RESPONSE Returns unexpected response codes 13%
156.154.71.24
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 13%
138.128.189.171
AS33182 HostDime.com, Inc. BAD_RESPONSE Returns unexpected response codes 12%
192.169.192.62
AS398101 GoDaddy.com, LLC BAD_RESPONSE Returns unexpected response codes 11%
74.112.164.55
AS33627 VISTEON BAD_RESPONSE Returns unexpected response codes 11%
74.209.162.5
AS11739 Digital Fortress, Inc. BAD_RESPONSE Returns unexpected response codes 11%
51.81.240.15
AS16276 OVH SAS BAD_RESPONSE Returns unexpected response codes 11%
45.77.118.158
AS20473 The Constant Company, LLC BAD_RESPONSE Returns unexpected response codes 11%
66.228.32.185
AS63949 Akamai Connected Cloud BAD_RESPONSE Returns unexpected response codes 11%
166.62.35.102
AS398101 GoDaddy.com, LLC BAD_RESPONSE Returns unexpected response codes 10%
23.111.184.9
AS29802 HVC-AS BAD_RESPONSE Returns unexpected response codes 10%
217.79.247.238
AS29802 HVC-AS BAD_RESPONSE Returns unexpected response codes 10%
23.216.53.118
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 10%
147.79.75.198
AS47583 Hostinger International Limited BAD_RESPONSE Returns unexpected response codes 10%
104.238.229.4
AS26863 Gameserverkings BAD_RESPONSE Returns unexpected response codes 10%
156.154.71.23
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 10%
206.130.120.153
AS13213 Thg Hosting Limited BAD_RESPONSE Returns unexpected response codes 9%
85.237.203.235
AS397423 Tier.Net Technologies LLC BAD_RESPONSE Returns unexpected response codes 9%
85.237.203.236
AS397423 Tier.Net Technologies LLC BAD_RESPONSE Returns unexpected response codes 9%
156.154.71.21
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 8%
5.161.209.82
AS213230 Hetzner Online GmbH BAD_RESPONSE Returns unexpected response codes 8%
51.81.209.126
AS16276 OVH SAS BAD_RESPONSE Returns unexpected response codes 7%
15.204.245.199
AS16276 OVH SAS BAD_RESPONSE Returns unexpected response codes 7%
208.77.239.140
AS40511 FIRELINE BAD_RESPONSE Returns unexpected response codes 7%
52.23.27.219
AS14618 Amazon.com, Inc. BAD_RESPONSE Returns unexpected response codes 7%
208.249.244.2
AS17119 KAMPUNG BAD_RESPONSE Returns unexpected response codes 6%
156.154.71.22
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 6%
52.116.181.86
AS36351 IBM Cloud BAD_RESPONSE Returns unexpected response codes 6%
216.227.189.192
AS30058 FDCservers.net BAD_RESPONSE Returns unexpected response codes 6%
209.239.115.62
AS30083 velia.net BAD_RESPONSE Returns unexpected response codes 6%
165.227.70.162
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 6%
69.88.0.17
AS30362 HPT-ASN BAD_RESPONSE Returns unexpected response codes 5%
38.110.1.45
AS63023 GTHost BAD_RESPONSE Returns unexpected response codes 5%
20.25.192.243
AS8075 Microsoft Corporation BAD_RESPONSE Returns unexpected response codes 5%
104.226.60.33
AS5650 Frontier Communications of America, Inc. BAD_RESPONSE Returns unexpected response codes 4%
198.71.62.239
AS8560 IONOS SE BAD_RESPONSE Returns unexpected response codes 3%
98.189.213.222
AS22773 ASN-CXA-ALL-CCI-22773-RDC BAD_RESPONSE Returns unexpected response codes 3%
156.154.71.25
AS397215 ULTRADNS BAD_RESPONSE Returns unexpected response codes 3%
156.154.71.27
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 3%
20.163.14.26
AS8075 Microsoft Corporation BAD_RESPONSE Returns unexpected response codes 3%
162.243.16.159
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 2%
209.126.106.250
AS30083 velia.net BAD_RESPONSE Returns unexpected response codes 2%
155.138.254.190
AS20473 The Constant Company, LLC BAD_RESPONSE Returns unexpected response codes 2%
173.223.99.22
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 2%
173.223.98.22
AS21342 Akamai International B.V. BAD_RESPONSE Returns unexpected response codes 2%
134.209.220.16
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 2%
159.198.74.199
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 2%
66.216.47.29
AS19151 BBO-1 BAD_RESPONSE Returns unexpected response codes 2%
66.29.136.6
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 1%
66.29.136.14
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 1%
107.20.219.0
AS14618 Amazon.com, Inc. BAD_RESPONSE Returns unexpected response codes 1%
23.228.179.101
AS16591 Google Fiber Inc. BAD_RESPONSE Returns unexpected response codes 1%
216.246.113.85
AS23352 DEFT.COM BAD_RESPONSE Returns unexpected response codes 1%
104.248.186.117
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
156.154.71.26
AS12008 Vercara, LLC BAD_RESPONSE Returns unexpected response codes 1%
192.241.205.38
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
209.80.159.21
AS46887 LIGHTOWER BAD_RESPONSE Returns unexpected response codes 1%
206.189.168.84
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
74.208.237.87
AS8560 IONOS SE BAD_RESPONSE Returns unexpected response codes 1%
159.203.104.136
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
213.210.13.6
AS47583 Hostinger International Limited BAD_RESPONSE Returns unexpected response codes 1%
199.192.22.128
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 1%
199.192.22.137
AS22612 Namecheap, Inc. BAD_RESPONSE Returns unexpected response codes 1%
134.209.209.22
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
134.199.180.63
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
104.248.110.33
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
138.68.46.220
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
167.99.144.203
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 1%
64.5.130.2
AS11221 WHRONET BAD_RESPONSE Returns unexpected response codes 1%
172.234.239.170
AS63949 Akamai Connected Cloud BAD_RESPONSE Returns unexpected response codes 0%
157.230.179.141
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 0%
143.198.110.216
AS14061 DigitalOcean, LLC BAD_RESPONSE Returns unexpected response codes 0%
68.64.126.27
AS1640 Thacker-Grigsby Communications BAD_RESPONSE Returns unexpected response codes 0%

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.

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