DNS Servers

United States of America 4331 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

  • 192.69.221.238

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    128ms
    |
    3ms
    |
    101ms
  • 208.53.50.22

    DataBank Holdings, Ltd.

    AS13767

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    130ms
    |
    3ms
    |
    118ms
  • 208.131.152.104

    THG HOSTING LIMITED

    AS13213

    Salt Lake City

    40.7608, -111.8911

    96% uptime

    131ms
    |
    0ms
    |
    209ms
  • 209.25.173.146

    Syringa Networks, LLC

    AS15305

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    142ms
    |
    1ms
    |
    48ms
  • 209.147.106.1

    Connext LLC

    AS399282

    Salt Lake City

    40.7608, -111.8911

    96% uptime

    140ms
    |
    1ms
    |
    250ms
  • 209.147.107.1

    Connext LLC

    AS399282

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    140ms
    |
    1ms
    |
    220ms
  • 216.18.206.118

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    128ms
    |
    3ms
    |
    113ms
  • 216.18.219.19

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    132ms
    |
    1ms
    |
    115ms
  • 216.18.219.20

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    135ms
    |
    0ms
    |
    110ms
  • 216.18.219.34

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    135ms
    |
    0ms
    |
    110ms
  • 216.18.219.36

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    133ms
    |
    1ms
    |
    114ms
  • 216.18.219.38

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    133ms
    |
    1ms
    |
    117ms
  • 4.151.243.147

    Microsoft Corporation

    AS8075

    San Antonio

    29.4241, -98.4936

    100% uptime

    125ms
    |
    4ms
    |
    207ms
  • 12.43.235.18

    AT&T Enterprises, LLC

    AS7018

    San Antonio

    29.4241, -98.4936

    99% uptime

    154ms
    |
    4ms
    |
    84ms
  • 12.116.239.134

    AT&T Enterprises, LLC

    AS7018

    San Antonio

    29.4241, -98.4936

    99% uptime

    159ms
    |
    22ms
    |
    189ms
  • 12.146.145.42

    AT&T Enterprises, LLC

    AS7018

    San Antonio

    29.6169, -98.6252

    100% uptime

    150ms
    |
    20ms
    |
    170ms
  • 20.225.131.6

    Microsoft Corporation

    AS8075

    San Antonio

    29.4241, -98.4936

    100% uptime

    120ms
    |
    6ms
    |
    228ms
  • 24.169.253.99

    Charter Communications Inc

    AS11427

    San Antonio

    29.4241, -98.4936

    98% uptime

    147ms
    |
    8ms
    |
    204ms
  • 24.242.174.34

    Charter Communications Inc

    AS11427

    San Antonio

    29.4241, -98.4936

    100% uptime

    146ms
    |
    8ms
    |
    182ms
  • 71.42.100.52

    Charter Communications Inc

    AS11427

    San Antonio

    29.4241, -98.4936

    96% uptime

    152ms
    |
    9ms
    |
    354ms
  • 97.77.106.4

    Charter Communications Inc

    AS11427

    San Antonio

    29.4241, -98.4936

    96% uptime

    143ms
    |
    2ms
    |
    222ms
  • 97.77.249.114

    Charter Communications Inc

    AS11427

    San Antonio

    29.5855, -98.4071

    99% uptime

    151ms
    |
    2ms
    |
    195ms
  • 98.6.238.190

    Charter Communications Inc

    AS11427

    San Antonio

    29.4241, -98.4936

    100% uptime

    151ms
    |
    4ms
    |
    284ms
  • 104.214.31.44

    Microsoft Corporation

    AS8075

    San Antonio

    29.4241, -98.4936

    98% uptime

    128ms
    |
    5ms
    |
    153ms
  • 107.131.56.101

    AT&T Enterprises, LLC

    AS7018

    San Antonio

    29.4241, -98.4936

    100% uptime

    144ms
    |
    3ms
    |
    205ms
  • 107.222.78.149

    AT&T Enterprises, LLC

    AS7018

    San Antonio

    29.4241, -98.4936

    99% uptime

    143ms
    |
    2ms
    |
    59ms
  • 136.50.7.246

    Google Fiber Inc.

    AS16591

    San Antonio

    29.4241, -98.4936

    99% uptime

    133ms
    |
    12ms
    |
    160ms
  • 136.51.64.77

    Google Fiber Inc.

    AS16591

    San Antonio

    29.4241, -98.4936

    98% uptime

    129ms
    |
    6ms
    |
    157ms
  • 136.51.72.58

    Google Fiber Inc.

    AS16591

    San Antonio

    29.4241, -98.4936

    100% uptime

    132ms
    |
    11ms
    |
    168ms
  • 64.223.67.209

    Fidium

    AS13977

    Sanbornton

    43.4892, -71.5823

    100% uptime

    104ms
    |
    2ms
    |
    216ms
  • 50.209.143.169

    Comcast Cable Communications, LLC

    AS7922

    San Carlos

    37.5072, -122.2605

    100% uptime

    174ms
    |
    2ms
    |
    197ms
  • 24.43.109.162

    Charter Communications Inc

    AS20001

    San Diego

    32.7157, -117.1647

    98% uptime

    180ms
    |
    3ms
    |
    307ms
  • 38.140.110.74

    Cogent Communications, LLC

    AS174

    San Diego

    32.7157, -117.1647

    100% uptime

    165ms
    |
    18ms
    |
    126ms
  • 70.95.202.35

    Charter Communications Inc

    AS20001

    San Diego

    32.7157, -117.1647

    100% uptime

    179ms
    |
    3ms
    |
    91ms
  • 70.166.13.25

    Cox Communications Inc.

    AS22773

    San Diego

    32.7157, -117.1647

    98% uptime

    184ms
    |
    8ms
    |
    296ms
  • 70.167.165.113

    Cox Communications Inc.

    AS22773

    San Diego

    32.7157, -117.1647

    96% uptime

    174ms
    |
    13ms
    |
    236ms
  • 76.251.72.42

    AT&T Enterprises, LLC

    AS7018

    San Diego

    32.7157, -117.1647

    98% uptime

    168ms
    |
    3ms
    |
    88ms
  • 76.251.72.43

    AT&T Enterprises, LLC

    AS7018

    San Diego

    32.7157, -117.1647

    98% uptime

    169ms
    |
    3ms
    |
    80ms
  • 76.251.72.44

    AT&T Enterprises, LLC

    AS7018

    San Diego

    32.7157, -117.1647

    96% uptime

    169ms
    |
    4ms
    |
    74ms
  • 76.251.72.45

    AT&T Enterprises, LLC

    AS7018

    San Diego

    32.7157, -117.1647

    96% uptime

    167ms
    |
    5ms
    |
    92ms
  • 98.175.111.42

    Cox Communications Inc.

    AS22773

    San Diego

    32.7157, -117.1647

    98% uptime

    181ms
    |
    4ms
    |
    263ms
  • 147.203.215.99

    LightEdge Solutions

    AS11320

    San Diego

    32.7157, -117.1647

    100% uptime

    145ms
    |
    3ms
    |
    128ms
  • 173.198.121.238

    Charter Communications Inc

    AS20001

    San Diego

    32.7157, -117.1647

    99% uptime

    181ms
    |
    5ms
    |
    59ms
  • 174.78.176.129

    Cox Communications Inc.

    AS22773

    San Diego

    32.7157, -117.1647

    99% uptime

    167ms
    |
    3ms
    |
    244ms
  • 184.181.25.39

    Cox Communications Inc.

    AS22773

    San Diego

    32.7157, -117.1647

    98% uptime

    174ms
    |
    2ms
    |
    288ms
  • 216.240.173.2

    LightEdge Solutions

    AS11320

    San Diego

    32.7157, -117.1647

    100% uptime

    161ms
    |
    4ms
    |
    127ms
  • 216.240.173.3

    LightEdge Solutions

    AS11320

    San Diego

    32.7157, -117.1647

    100% uptime

    145ms
    |
    3ms
    |
    143ms
  • 47.176.176.66

    Frontier Communications of America, Inc.

    AS5650

    San Dimas

    34.1067, -117.8067

    99% uptime

    164ms
    |
    10ms
    |
    132ms
  • 4.38.245.124

    Level 3 Parent, LLC

    AS3356

    Sandston

    37.5235, -77.3158

    100% uptime

    101ms
    |
    2ms
    |
    62ms
  • 65.175.252.189

    Breezeline

    AS11776

    Sanford

    43.4393, -70.7742

    100% uptime

    109ms
    |
    3ms
    |
    157ms
  • 67.9.90.170

    Charter Communications, Inc

    AS33363

    Sanford

    28.8006, -81.2731

    100% uptime

    131ms
    |
    8ms
    |
    300ms
  • 12.50.186.242

    AT&T Enterprises, LLC

    AS7018

    San Francisco

    37.7749, -122.4194

    96% uptime

    166ms
    |
    8ms
    |
    258ms
  • 12.186.22.33

    AT&T Enterprises, LLC

    AS7018

    San Francisco

    37.7749, -122.4194

    100% uptime

    166ms
    |
    5ms
    |
    191ms
  • 23.93.103.246

    Sonic Telecom LLC

    AS46375

    San Francisco

    37.7749, -122.4194

    96% uptime

    159ms
    |
    15ms
    |
    214ms
  • 23.93.189.107

    Sonic Telecom LLC

    AS46375

    San Francisco

    37.7749, -122.4194

    100% uptime

    163ms
    |
    5ms
    |
    228ms
  • 38.88.217.98

    Cogent Communications, LLC

    AS174

    San Francisco

    37.7749, -122.4194

    100% uptime

    160ms
    |
    13ms
    |
    176ms
  • 38.107.165.46

    BLUE WIRELESS PTE LTD

    AS137182

    San Francisco

    37.7749, -122.4194

    98% uptime

    200ms
    |
    12ms
    |
    79ms
  • 45.55.0.4

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    99% uptime

    150ms
    |
    1ms
    |
    80ms
  • 45.55.3.11

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    99% uptime

    152ms
    |
    2ms
    |
    162ms
  • 45.55.9.210

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    150ms
    |
    2ms
    |
    76ms
  • 45.55.25.96

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    153ms
    |
    1ms
    |
    172ms
  • 45.55.112.11

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    152ms
    |
    1ms
    |
    154ms
  • 73.223.196.109

    Comcast Cable Communications, LLC

    AS7922

    San Francisco

    37.7749, -122.4194

    100% uptime

    172ms
    |
    3ms
    |
    220ms
  • 76.191.151.220

    Sonic Telecom LLC

    AS46375

    San Francisco

    37.7749, -122.4194

    98% uptime

    161ms
    |
    3ms
    |
    347ms
  • 104.131.129.156

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    153ms
    |
    2ms
    |
    93ms
  • 104.131.140.24

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    99% uptime

    153ms
    |
    1ms
    |
    90ms
  • 104.131.145.77

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    96% uptime

    153ms
    |
    1ms
    |
    84ms
  • 104.236.141.216

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    150ms
    |
    3ms
    |
    79ms
  • 104.236.145.70

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    153ms
    |
    1ms
    |
    80ms
  • 104.236.165.141

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    96% uptime

    150ms
    |
    1ms
    |
    82ms
  • 107.170.212.205

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    153ms
    |
    2ms
    |
    73ms
  • 107.170.230.174

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    150ms
    |
    1ms
    |
    96ms
  • 107.170.250.95

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    150ms
    |
    1ms
    |
    93ms
  • 135.180.106.163

    Sonic Telecom LLC

    AS46375

    San Francisco

    37.7749, -122.4194

    100% uptime

    163ms
    |
    4ms
    |
    205ms
  • 135.180.107.93

    Sonic Telecom LLC

    AS46375

    San Francisco

    37.7749, -122.4194

    98% uptime

    162ms
    |
    1ms
    |
    214ms
  • 136.25.84.81

    Webpass Inc.

    AS19165

    San Francisco

    37.7749, -122.4194

    98% uptime

    152ms
    |
    3ms
    |
    312ms
  • 138.68.192.118

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    150ms
    |
    2ms
    |
    161ms
  • 158.51.80.4

    Another Corporate ISP, LLC

    AS32329

    San Francisco

    37.7749, -122.4194

    96% uptime

    145ms
    |
    4ms
    |
    166ms
  • 162.243.132.193

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    150ms
    |
    1ms
    |
    82ms
  • 162.243.135.243

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    150ms
    |
    1ms
    |
    80ms
  • 162.243.141.9

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    99% uptime

    151ms
    |
    2ms
    |
    95ms
  • 162.243.141.190

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    152ms
    |
    1ms
    |
    76ms
  • 162.243.143.231

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    153ms
    |
    1ms
    |
    74ms
  • 173.228.68.40

    Sonic Telecom LLC

    AS46375

    San Francisco

    37.7749, -122.4194

    98% uptime

    161ms
    |
    3ms
    |
    224ms
  • 176.108.142.119

    Another Corporate ISP, LLC

    AS32329

    San Francisco

    37.7749, -122.4194

    96% uptime

    144ms
    |
    1ms
    |
    25ms
  • 192.241.193.89

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    150ms
    |
    1ms
    |
    80ms
  • 192.241.194.39

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    150ms
    |
    2ms
    |
    92ms
  • 192.241.195.212

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    151ms
    |
    2ms
    |
    93ms
  • 192.241.203.157

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    151ms
    |
    2ms
    |
    91ms
  • 192.241.208.41

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    152ms
    |
    1ms
    |
    169ms
  • 192.241.209.252

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    99% uptime

    150ms
    |
    1ms
    |
    90ms
  • 192.241.215.202

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    96% uptime

    153ms
    |
    1ms
    |
    70ms
  • 192.241.222.225

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    153ms
    |
    1ms
    |
    74ms
  • 192.241.224.251

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    96% uptime

    152ms
    |
    2ms
    |
    78ms
  • 192.241.237.29

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    150ms
    |
    2ms
    |
    75ms
  • 192.241.239.7

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    153ms
    |
    1ms
    |
    103ms
  • 198.27.144.220

    Sonic Telecom LLC

    AS46375

    San Francisco

    37.7749, -122.4194

    99% uptime

    165ms
    |
    2ms
    |
    192ms
  • 198.199.92.86

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    153ms
    |
    1ms
    |
    90ms
  • 198.199.93.152

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    98% uptime

    152ms
    |
    1ms
    |
    90ms
  • 198.199.94.93

    DigitalOcean, LLC

    AS14061

    San Francisco

    37.7749, -122.4194

    100% uptime

    150ms
    |
    1ms
    |
    82ms