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

  • 38.86.72.132

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    1ms
    |
    124ms
  • 38.86.72.133

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    162ms
  • 38.86.72.134

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    152ms
  • 38.86.72.137

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    0ms
    |
    132ms
  • 38.86.72.140

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    2ms
    |
    151ms
  • 38.86.72.141

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    1ms
    |
    132ms
  • 38.86.72.145

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    94% uptime

    161ms
    |
    1ms
    |
    174ms
  • 38.86.72.146

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    2ms
    |
    150ms
  • 38.86.72.147

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    118ms
  • 38.86.72.148

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    2ms
    |
    156ms
  • 38.86.72.149

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    2ms
    |
    148ms
  • 38.86.72.150

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    2ms
    |
    148ms
  • 38.86.72.153

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    162ms
    |
    1ms
    |
    128ms
  • 38.86.72.154

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    2ms
    |
    144ms
  • 38.86.72.156

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    2ms
    |
    171ms
  • 38.86.72.159

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    2ms
    |
    128ms
  • 38.86.72.164

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    2ms
    |
    159ms
  • 38.86.72.165

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    2ms
    |
    126ms
  • 38.86.72.171

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    131ms
  • 38.86.72.174

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    162ms
    |
    2ms
    |
    134ms
  • 38.86.72.175

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    162ms
    |
    1ms
    |
    156ms
  • 38.86.72.176

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    108ms
  • 38.86.72.180

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    15ms
    |
    122ms
  • 38.86.72.184

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    162ms
    |
    1ms
    |
    131ms
  • 38.86.72.186

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    162ms
  • 38.86.72.188

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    2ms
    |
    149ms
  • 38.86.72.189

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    3ms
    |
    157ms
  • 38.86.72.190

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    141ms
  • 38.86.72.193

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    144ms
  • 38.86.72.194

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    2ms
    |
    112ms
  • 38.86.72.201

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    1ms
    |
    110ms
  • 38.86.72.209

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    94% uptime

    164ms
    |
    3ms
    |
    137ms
  • 38.86.72.210

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    169ms
  • 38.86.72.211

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    162ms
    |
    1ms
    |
    130ms
  • 38.86.72.212

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    162ms
    |
    2ms
    |
    128ms
  • 38.86.72.213

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    125ms
  • 38.86.72.214

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    144ms
  • 38.86.72.215

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    23ms
    |
    126ms
  • 38.86.72.218

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    152ms
  • 38.86.72.222

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    145ms
  • 38.86.72.223

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    164ms
    |
    1ms
    |
    120ms
  • 38.86.72.228

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    19ms
    |
    126ms
  • 38.86.72.235

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    94% uptime

    160ms
    |
    1ms
    |
    162ms
  • 38.86.72.250

    Cogent Communications, LLC

    AS174

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    2ms
    |
    177ms
  • 40.133.232.15

    Windstream Communications LLC

    AS7029

    San Jose

    37.3394, -121.8950

    100% uptime

    149ms
    |
    2ms
    |
    164ms
  • 45.9.9.2

    Kirino LLC

    AS41378

    San Jose

    37.3394, -121.8950

    100% uptime

    159ms
    |
    0ms
    |
    107ms
  • 50.145.34.66

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    100% uptime

    165ms
    |
    1ms
    |
    118ms
  • 50.203.217.196

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    99% uptime

    165ms
    |
    1ms
    |
    96ms
  • 50.206.65.4

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    88% uptime

    166ms
    |
    1ms
    |
    180ms
  • 64.13.170.93

    Wave Broadband

    AS11404

    San Jose

    37.3394, -121.8950

    99% uptime

    160ms
    |
    0ms
    |
    14ms
  • 64.13.170.94

    Wave Broadband

    AS11404

    San Jose

    37.3394, -121.8950

    99% uptime

    161ms
    |
    0ms
    |
    13ms
  • 64.62.166.147

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    99% uptime

    149ms
    |
    7ms
    |
    72ms
  • 64.62.200.19

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    100% uptime

    149ms
    |
    0ms
    |
    90ms
  • 64.118.154.122

    Eons Data Communications Limited

    AS138997

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    1ms
    |
    101ms
  • 65.49.37.178

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    88% uptime

    149ms
    |
    0ms
    |
    178ms
  • 66.206.166.2

    Corporate West Computer Systems, Inc.

    AS13917

    San Jose

    37.3394, -121.8950

    99% uptime

    149ms
    |
    2ms
    |
    166ms
  • 66.248.233.1

    AZSIGNSHOP LLC

    AS6556

    San Jose

    37.3394, -121.8950

    94% uptime

    141ms
    |
    0ms
    |
    143ms
  • 67.180.11.57

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    100% uptime

    177ms
    |
    1ms
    |
    299ms
  • 67.188.223.84

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    100% uptime

    178ms
    |
    2ms
    |
    274ms
  • 67.206.187.125

    Nutrien

    AS393891

    San Jose

    37.3394, -121.8950

    100% uptime

    148ms
    |
    0ms
    |
    21ms
  • 71.74.166.138

    Charter Communications Inc

    AS7843

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    1ms
    |
    117ms
  • 71.202.251.178

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    100% uptime

    177ms
    |
    1ms
    |
    354ms
  • 73.223.236.131

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    99% uptime

    179ms
    |
    3ms
    |
    312ms
  • 76.102.144.159

    Comcast Cable Communications, LLC

    AS7922

    San Jose

    37.3394, -121.8950

    99% uptime

    176ms
    |
    3ms
    |
    292ms
  • 79.127.255.78

    Datacamp Limited

    AS60068

    San Jose

    37.3394, -121.8950

    100% uptime

    174ms
    |
    7ms
    |
    105ms
  • 98.124.168.179

    GTT Communications Inc.

    AS3257

    San Jose

    37.3394, -121.8950

    100% uptime

    140ms
    |
    1ms
    |
    31ms
  • 103.175.99.7

    Black Mesa Corporation

    AS46997

    San Jose

    37.3394, -121.8950

    100% uptime

    141ms
    |
    0ms
    |
    19ms
  • 104.202.75.178

    Wave Broadband

    AS11404

    San Jose

    37.3394, -121.8950

    98% uptime

    167ms
    |
    7ms
    |
    140ms
  • 146.235.195.153

    Oracle Corporation

    AS31898

    San Jose

    37.3394, -121.8950

    99% uptime

    159ms
    |
    0ms
    |
    2ms
  • 162.210.105.25

    Sky Fiber Internet

    AS32212

    San Jose

    37.3394, -121.8950

    100% uptime

    168ms
    |
    0ms
    |
    148ms
  • 162.223.74.84

    TPx Communications

    AS14265

    San Jose

    37.3394, -121.8950

    100% uptime

    170ms
    |
    0ms
    |
    232ms
  • 166.88.164.55

    Baxet Group Inc.

    AS26383

    San Jose

    37.3394, -121.8950

    100% uptime

    163ms
    |
    3ms
    |
    179ms
  • 168.75.240.212

    Navisite Opco LLC

    AS4544

    San Jose

    37.3394, -121.8950

    100% uptime

    157ms
    |
    2ms
    |
    141ms
  • 169.44.148.180

    IBM Cloud

    AS36351

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    182ms
  • 169.44.148.182

    IBM Cloud

    AS36351

    San Jose

    37.3394, -121.8950

    100% uptime

    158ms
    |
    1ms
    |
    219ms
  • 173.205.197.5

    Equinix, Inc.

    AS54588

    San Jose

    37.3394, -121.8950

    99% uptime

    156ms
    |
    3ms
    |
    172ms
  • 173.214.252.0

    Serverel Inc.

    AS15317

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    1ms
    |
    84ms
  • 184.23.62.99

    Sonic Telecom LLC

    AS46375

    San Jose

    37.3394, -121.8950

    100% uptime

    159ms
    |
    1ms
    |
    186ms
  • 184.75.247.64

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    99% uptime

    149ms
    |
    15ms
    |
    146ms
  • 184.75.247.68

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    100% uptime

    149ms
    |
    13ms
    |
    192ms
  • 184.75.247.70

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    100% uptime

    149ms
    |
    0ms
    |
    192ms
  • 184.75.247.163

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    98% uptime

    149ms
    |
    11ms
    |
    189ms
  • 185.23.182.41

    Kaopu Cloud HK Limited

    AS138915

    San Jose

    37.3394, -121.8950

    99% uptime

    148ms
    |
    3ms
    |
    96ms
  • 185.149.69.74

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    100% uptime

    149ms
    |
    3ms
    |
    126ms
  • 185.149.70.74

    Hurricane Electric LLC

    AS6939

    San Jose

    37.3394, -121.8950

    98% uptime

    149ms
    |
    12ms
    |
    153ms
  • 192.9.137.222

    Oracle Corporation

    AS31898

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    1ms
    |
    90ms
  • 192.9.150.230

    Oracle Corporation

    AS31898

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    0ms
    |
    120ms
  • 192.9.227.52

    Oracle Corporation

    AS31898

    San Jose

    37.3394, -121.8950

    100% uptime

    159ms
    |
    0ms
    |
    33ms
  • 192.18.130.46

    Oracle Corporation

    AS31898

    San Jose

    37.3394, -121.8950

    100% uptime

    161ms
    |
    0ms
    |
    67ms
  • 192.159.10.48

    Contra Costa County Regional Occupation Program / Richmond

    AS1734

    San Jose

    37.3394, -121.8950

    100% uptime

    141ms
    |
    0ms
    |
    153ms
  • 192.227.167.147

    HostPapa

    AS36352

    San Jose

    37.3394, -121.8950

    99% uptime

    161ms
    |
    1ms
    |
    115ms
  • 192.227.167.171

    HostPapa

    AS36352

    San Jose

    37.3394, -121.8950

    100% uptime

    159ms
    |
    1ms
    |
    24ms
  • 198.8.62.5

    HostRocket.com, Inc.

    AS62756

    San Jose

    37.3394, -121.8950

    98% uptime

    141ms
    |
    8ms
    |
    70ms
  • 198.8.63.7

    HostRocket.com, Inc.

    AS62756

    San Jose

    37.3394, -121.8950

    100% uptime

    141ms
    |
    0ms
    |
    77ms
  • 198.91.124.18

    TPx Communications

    AS14265

    San Jose

    37.3394, -121.8950

    99% uptime

    170ms
    |
    3ms
    |
    140ms
  • 199.16.104.4

    Half Bat LLC

    AS23403

    San Jose

    37.3394, -121.8950

    100% uptime

    169ms
    |
    4ms
    |
    56ms
  • 199.195.236.1

    Kasumi Networks NA LLC

    AS30307

    San Jose

    37.3394, -121.8950

    100% uptime

    160ms
    |
    0ms
    |
    156ms
  • 207.54.10.141

    Quest

    AS19404

    San Jose

    37.3394, -121.8950

    99% uptime

    149ms
    |
    3ms
    |
    59ms
  • 207.126.105.76

    Zayo Bandwidth

    AS6461

    San Jose

    37.3394, -121.8950

    100% uptime

    144ms
    |
    4ms
    |
    154ms
  • 209.58.135.75

    Leaseweb USA, Inc.

    AS7203

    San Jose

    37.3394, -121.8950

    100% uptime

    152ms
    |
    5ms
    |
    58ms