DNS Servers

United States of America 4604 local DNS servers

For debugging only

This list is intended to help troubleshoot DNS issues. Do not configure these servers as your DNS resolver unless you know and trust the operator. A DNS resolver can log the domains you look up and can manipulate or block DNS responses.

Instead, use your ISP's default DNS server, or a global DNS server operated by an organisation you trust.

Global DNS servers

  • 209.58.137.71

    Leaseweb USA, Inc.

    AS7203

    San Jose

    37.3394, -121.8950

    99% uptime

    151ms
    |
    4ms
    |
    64ms
  • 216.38.154.186

    Paxio Inc.

    AS36734

    San Jose

    37.3394, -121.8950

    100% uptime

    151ms
    |
    3ms
    |
    43ms
  • 24.205.255.98

    Charter Communications LLC

    AS20115

    San Luis Obispo

    35.2828, -120.6596

    100% uptime

    176ms
    |
    4ms
    |
    253ms
  • 68.185.84.95

    Charter Communications LLC

    AS20115

    San Luis Obispo

    35.2828, -120.6596

    100% uptime

    175ms
    |
    4ms
    |
    256ms
  • 153.33.67.108

    PAVLOV MEDIA INC

    AS23473

    San Marcos

    29.8833, -97.9414

    94% uptime

    121ms
    |
    8ms
    |
    222ms
  • 50.145.34.67

    Comcast Cable Communications, LLC

    AS7922

    San Mateo

    37.5630, -122.3255

    100% uptime

    166ms
    |
    1ms
    |
    112ms
  • 169.199.246.6

    Contra Costa County Office of Education

    AS23309

    San Pablo

    37.9622, -122.3455

    100% uptime

    170ms
    |
    0ms
    |
    37ms
  • 73.162.255.227

    Comcast Cable Communications, LLC

    AS7922

    San Ramon

    37.7799, -121.9780

    99% uptime

    177ms
    |
    2ms
    |
    144ms
  • 47.143.48.189

    Frontier Communications of America, Inc.

    AS5650

    Santa Barbara

    34.4208, -119.6982

    100% uptime

    167ms
    |
    1ms
    |
    233ms
  • 24.144.84.42

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    150ms
    |
    2ms
    |
    72ms
  • 24.199.116.202

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    153ms
    |
    2ms
    |
    214ms
  • 38.59.249.166

    Kirino LLC

    AS41378

    Santa Clara

    37.3924, -121.9623

    100% uptime

    159ms
    |
    1ms
    |
    130ms
  • 38.87.67.72

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    164ms
    |
    1ms
    |
    150ms
  • 38.87.67.74

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    160ms
    |
    2ms
    |
    164ms
  • 38.87.67.75

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    161ms
    |
    1ms
    |
    145ms
  • 38.87.67.77

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    161ms
    |
    1ms
    |
    153ms
  • 38.87.67.78

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    94% uptime

    163ms
    |
    2ms
    |
    140ms
  • 38.87.67.80

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    164ms
    |
    1ms
    |
    127ms
  • 38.87.67.84

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    94% uptime

    161ms
    |
    1ms
    |
    154ms
  • 38.87.67.86

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    163ms
    |
    2ms
    |
    140ms
  • 38.87.67.88

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    163ms
    |
    42ms
    |
    136ms
  • 38.87.67.91

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    161ms
    |
    2ms
    |
    168ms
  • 38.87.67.94

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    164ms
    |
    1ms
    |
    131ms
  • 38.87.67.152

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    160ms
    |
    0ms
    |
    152ms
  • 38.87.67.154

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    164ms
    |
    2ms
    |
    148ms
  • 38.87.67.155

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    164ms
    |
    2ms
    |
    145ms
  • 38.87.67.156

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    164ms
    |
    1ms
    |
    140ms
  • 38.87.67.157

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    163ms
    |
    1ms
    |
    106ms
  • 38.87.67.159

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    100% uptime

    162ms
    |
    1ms
    |
    131ms
  • 38.87.67.231

    Cogent Communications, LLC

    AS174

    Santa Clara

    37.3541, -121.9552

    99% uptime

    164ms
    |
    2ms
    |
    103ms
  • 43.130.48.18

    Tencent Building, Kejizhongyi Avenue

    AS132203

    Santa Clara

    37.3541, -121.9552

    100% uptime

    161ms
    |
    1ms
    |
    58ms
  • 43.153.60.2

    Tencent Building, Kejizhongyi Avenue

    AS132203

    Santa Clara

    37.3541, -121.9552

    100% uptime

    158ms
    |
    0ms
    |
    70ms
  • 45.32.137.95

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    10ms
    |
    58ms
  • 45.32.137.209

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    98% uptime

    149ms
    |
    9ms
    |
    72ms
  • 45.32.140.81

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    173ms
    |
    1ms
    |
    78ms
  • 45.45.224.215

    WireCat LLC

    AS399888

    Santa Clara

    37.3541, -121.9552

    99% uptime

    152ms
    |
    4ms
    |
    132ms
  • 45.63.88.223

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    172ms
    |
    3ms
    |
    184ms
  • 45.63.94.173

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    10ms
    |
    58ms
  • 45.77.6.22

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    172ms
    |
    1ms
    |
    180ms
  • 45.77.191.178

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    172ms
    |
    1ms
    |
    180ms
  • 49.51.178.84

    Tencent Building, Kejizhongyi Avenue

    AS132203

    Santa Clara

    37.3541, -121.9552

    94% uptime

    159ms
    |
    0ms
    |
    19ms
  • 49.51.247.181

    Tencent Building, Kejizhongyi Avenue

    AS132203

    Santa Clara

    37.3541, -121.9552

    100% uptime

    159ms
    |
    1ms
    |
    38ms
  • 64.23.171.176

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    2ms
    |
    71ms
  • 64.23.181.31

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    148ms
    |
    2ms
    |
    71ms
  • 64.23.186.98

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    148ms
    |
    11ms
    |
    70ms
  • 64.23.190.2

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    2ms
    |
    172ms
  • 64.23.233.118

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    3ms
    |
    78ms
  • 64.23.233.188

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    99% uptime

    149ms
    |
    2ms
    |
    68ms
  • 64.23.237.113

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    153ms
    |
    1ms
    |
    58ms
  • 64.23.242.2

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    3ms
    |
    152ms
  • 64.23.251.214

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    2ms
    |
    66ms
  • 64.227.111.143

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    2ms
    |
    71ms
  • 68.183.162.136

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    153ms
    |
    1ms
    |
    284ms
  • 68.183.172.102

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    3ms
    |
    69ms
  • 68.255.158.154

    AT&T Enterprises, LLC

    AS7018

    Santa Clara

    37.3541, -121.9552

    100% uptime

    164ms
    |
    6ms
    |
    32ms
  • 92.118.228.90

    DESIVPS

    AS133619

    Santa Clara

    37.3541, -121.9552

    99% uptime

    152ms
    |
    2ms
    |
    65ms
  • 104.207.151.141

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    10ms
    |
    159ms
  • 104.238.180.253

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    10ms
    |
    162ms
  • 104.248.75.150

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    2ms
    |
    72ms
  • 104.248.181.121

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    7ms
    |
    70ms
  • 107.172.87.210

    HostPapa

    AS36352

    Santa Clara

    37.3541, -121.9552

    99% uptime

    161ms
    |
    1ms
    |
    74ms
  • 107.173.255.159

    HostPapa

    AS36352

    Santa Clara

    37.3541, -121.9552

    100% uptime

    161ms
    |
    0ms
    |
    23ms
  • 107.174.181.234

    HostPapa

    AS36352

    Santa Clara

    37.3541, -121.9552

    94% uptime

    159ms
    |
    0ms
    |
    64ms
  • 108.68.52.44

    AT&T Enterprises, LLC

    AS7018

    Santa Clara

    37.3541, -121.9552

    100% uptime

    160ms
    |
    3ms
    |
    25ms
  • 128.199.9.51

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    150ms
    |
    3ms
    |
    69ms
  • 134.199.180.63

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    2ms
    |
    188ms
  • 137.184.8.95

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    2ms
    |
    58ms
  • 137.184.15.37

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    153ms
    |
    2ms
    |
    100ms
  • 137.184.38.241

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    1ms
    |
    20ms
  • 137.184.90.4

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    2ms
    |
    72ms
  • 137.184.90.238

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    1ms
    |
    62ms
  • 137.184.113.92

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    2ms
    |
    60ms
  • 137.184.113.208

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    1ms
    |
    66ms
  • 137.184.126.214

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    153ms
    |
    2ms
    |
    57ms
  • 137.184.184.225

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    2ms
    |
    126ms
  • 137.184.189.154

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    99% uptime

    151ms
    |
    2ms
    |
    60ms
  • 137.184.237.53

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    99% uptime

    151ms
    |
    2ms
    |
    92ms
  • 137.184.238.148

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    99% uptime

    149ms
    |
    3ms
    |
    102ms
  • 138.68.5.246

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    94% uptime

    151ms
    |
    1ms
    |
    196ms
  • 138.68.9.129

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    1ms
    |
    74ms
  • 138.68.41.0

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    150ms
    |
    2ms
    |
    68ms
  • 138.68.46.220

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    3ms
    |
    189ms
  • 138.68.231.227

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    99% uptime

    148ms
    |
    2ms
    |
    66ms
  • 138.68.236.109

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    2ms
    |
    70ms
  • 138.68.247.248

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    94% uptime

    150ms
    |
    2ms
    |
    56ms
  • 138.197.203.142

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    2ms
    |
    69ms
  • 140.82.50.196

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    10ms
    |
    72ms
  • 140.82.51.200

    The Constant Company, LLC

    AS20473

    Santa Clara

    37.3541, -121.9552

    94% uptime

    170ms
    |
    1ms
    |
    28ms
  • 143.110.133.50

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    150ms
    |
    2ms
    |
    110ms
  • 143.110.152.8

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    2ms
    |
    62ms
  • 143.110.156.9

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    2ms
    |
    68ms
  • 143.110.192.163

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    148ms
    |
    2ms
    |
    60ms
  • 143.110.194.107

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    153ms
    |
    2ms
    |
    75ms
  • 143.110.225.64

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    2ms
    |
    18ms
  • 143.110.225.72

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    2ms
    |
    68ms
  • 143.110.230.121

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    151ms
    |
    1ms
    |
    189ms
  • 143.110.230.174

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    2ms
    |
    69ms
  • 143.198.56.242

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    149ms
    |
    2ms
    |
    75ms
  • 143.198.102.18

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    152ms
    |
    1ms
    |
    188ms
  • 143.198.153.130

    DigitalOcean, LLC

    AS14061

    Santa Clara

    37.3541, -121.9552

    100% uptime

    150ms
    |
    1ms
    |
    75ms