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

  • 4.28.226.157

    Level 3 Parent, LLC

    AS3356

    Richmond

    37.5538, -77.4603

    100% uptime

    103ms
    |
    6ms
    |
    84ms
  • 50.234.131.225

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.5538, -77.4603

    100% uptime

    114ms
    |
    4ms
    |
    169ms
  • 73.12.109.208

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.5538, -77.4603

    100% uptime

    124ms
    |
    6ms
    |
    220ms
  • 162.252.149.151

    ALTIUS Broadband, LLC

    AS63060

    Richmond

    39.8289, -84.8902

    96% uptime

    138ms
    |
    19ms
    |
    373ms
  • 173.53.55.101

    Verizon Business

    AS701

    Richmond

    37.5538, -77.4603

    99% uptime

    111ms
    |
    1ms
    |
    100ms
  • 173.163.193.221

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.5538, -77.4603

    98% uptime

    123ms
    |
    5ms
    |
    243ms
  • 100.19.34.52

    Verizon Business

    AS701

    Ridley Park

    39.8812, -75.3238

    98% uptime

    99ms
    |
    2ms
    |
    801ms
  • 96.18.242.156

    CABLE ONE, INC.

    AS11492

    Rio Rancho

    35.2334, -106.6645

    100% uptime

    175ms
    |
    2ms
    |
    92ms
  • 89.116.108.7

    Datapro Telecom Solutions LLC

    AS27347

    River Edge

    40.9287, -74.0399

    98% uptime

    96ms
    |
    0ms
    |
    28ms
  • 89.116.108.133

    Datapro Telecom Solutions LLC

    AS27347

    River Edge

    40.9287, -74.0399

    99% uptime

    96ms
    |
    0ms
    |
    26ms
  • 89.116.108.134

    Datapro Telecom Solutions LLC

    AS27347

    River Edge

    40.9287, -74.0399

    100% uptime

    95ms
    |
    3ms
    |
    30ms
  • 68.195.175.195

    Cablevision Systems Corp.

    AS6128

    Riverhead

    40.9170, -72.6620

    100% uptime

    94ms
    |
    1ms
    |
    202ms
  • 162.255.35.62

    GeoLinks

    AS54483

    Riverside

    33.9534, -117.3962

    99% uptime

    169ms
    |
    6ms
    |
    155ms
  • 67.214.248.22

    FirstDigital Communications, LLC

    AS13415

    Riverton

    40.5219, -111.9391

    100% uptime

    136ms
    |
    1ms
    |
    191ms
  • 50.206.162.210

    Comcast Cable Communications, LLC

    AS7922

    Rochester Hills

    42.6584, -83.1499

    100% uptime

    119ms
    |
    2ms
    |
    43ms
  • 107.5.121.28

    Comcast Cable Communications, LLC

    AS7922

    Rochester Hills

    42.6584, -83.1499

    100% uptime

    131ms
    |
    3ms
    |
    222ms
  • 23.137.168.34

    Stalwart Wireless

    AS916

    Rock Creek

    45.7575, -92.9624

    100% uptime

    122ms
    |
    5ms
    |
    56ms
  • 146.168.186.242

    Breezeline

    AS11776

    Rock Hall

    39.1382, -76.2349

    96% uptime

    112ms
    |
    2ms
    |
    178ms
  • 24.149.93.91

    Shenandoah Cable Television LLC

    AS4922

    Rocky Mount

    36.9976, -79.8920

    100% uptime

    138ms
    |
    2ms
    |
    140ms
  • 204.111.214.225

    Shenandoah Cable Television LLC

    AS4922

    Rocky Mount

    36.9976, -79.8920

    96% uptime

    135ms
    |
    1ms
    |
    142ms
  • 209.122.32.215

    RCN

    AS6079

    Rolling Meadows

    42.0842, -88.0131

    100% uptime

    126ms
    |
    3ms
    |
    170ms
  • 12.215.214.2

    AT&T Enterprises, LLC

    AS7018

    Romeoville

    41.6475, -88.0895

    99% uptime

    115ms
    |
    1ms
    |
    379ms
  • 66.191.137.26

    Charter Communications LLC

    AS20115

    Rosemount

    44.7394, -93.1258

    100% uptime

    146ms
    |
    4ms
    |
    230ms
  • 71.105.231.21

    Verizon Business

    AS701

    Roslyn

    40.7998, -73.6510

    98% uptime

    109ms
    |
    5ms
    |
    181ms
  • 108.6.191.67

    Verizon Business

    AS701

    Roslyn

    40.7998, -73.6510

    98% uptime

    99ms
    |
    5ms
    |
    167ms
  • 108.6.191.68

    Verizon Business

    AS701

    Roslyn

    40.7998, -73.6510

    98% uptime

    99ms
    |
    4ms
    |
    164ms
  • 108.6.191.73

    Verizon Business

    AS701

    Roslyn

    40.7998, -73.6510

    98% uptime

    102ms
    |
    5ms
    |
    163ms
  • 216.21.176.50

    Geetingsville Telephone Co., Inc.

    AS31920

    Rossville

    40.4170, -86.5947

    99% uptime

    117ms
    |
    2ms
    |
    157ms
  • 72.250.129.197

    Mid-Rivers Telephone Cooperative

    AS11961

    Roundup

    46.4452, -108.5418

    96% uptime

    138ms
    |
    12ms
    |
    80ms
  • 50.253.229.43

    Comcast Cable Communications, LLC

    AS7922

    Royal Oak

    42.4895, -83.1446

    100% uptime

    126ms
    |
    9ms
    |
    184ms
  • 72.34.176.141

    Point Broadband Fiber Holding, LLC

    AS398337

    Royse City

    32.9751, -96.3325

    98% uptime

    129ms
    |
    2ms
    |
    160ms
  • 47.207.75.31

    Frontier Communications of America, Inc.

    AS5650

    Ruskin

    27.7209, -82.4331

    100% uptime

    136ms
    |
    3ms
    |
    93ms
  • 24.56.122.138

    Shenandoah Cable Television LLC

    AS4922

    Rustburg

    37.2768, -79.1008

    100% uptime

    141ms
    |
    2ms
    |
    143ms
  • 73.12.210.26

    Comcast Cable Communications, LLC

    AS7922

    Sacramento

    38.5816, -121.4944

    100% uptime

    184ms
    |
    48ms
    |
    333ms
  • 98.36.20.17

    Comcast Cable Communications, LLC

    AS7922

    Sacramento

    38.5816, -121.4944

    100% uptime

    172ms
    |
    3ms
    |
    342ms
  • 98.242.14.131

    Comcast Cable Communications, LLC

    AS7922

    Sacramento

    38.5816, -121.4944

    100% uptime

    170ms
    |
    2ms
    |
    322ms
  • 207.183.237.34

    Fidium

    AS14051

    Sacramento

    38.5816, -121.4944

    96% uptime

    149ms
    |
    3ms
    |
    238ms
  • 207.183.242.66

    Fidium

    AS14051

    Sacramento

    38.5816, -121.4944

    100% uptime

    148ms
    |
    3ms
    |
    211ms
  • 67.128.194.133

    Orbitel Communications, LLC

    AS17385

    Saddlebrooke

    32.5395, -110.9006

    99% uptime

    156ms
    |
    6ms
    |
    191ms
  • 24.173.149.58

    Charter Communications, Inc

    AS33363

    Safety Harbor

    27.9908, -82.6932

    100% uptime

    136ms
    |
    10ms
    |
    200ms
  • 63.233.142.85

    CenturyLink Communications, LLC

    AS209

    Saint Cloud

    45.5608, -94.1625

    100% uptime

    130ms
    |
    7ms
    |
    113ms
  • 137.27.110.62

    Charter Communications LLC

    AS20115

    Saint Cloud

    45.5608, -94.1625

    100% uptime

    144ms
    |
    4ms
    |
    225ms
  • 52.119.36.18

    Missouri Network Alliance, LLC

    AS62943

    Saint Joseph

    39.7686, -94.8466

    96% uptime

    119ms
    |
    3ms
    |
    132ms
  • 172.110.199.253

    Data Stream

    AS54502

    Saint Louis Park

    44.9483, -93.3480

    96% uptime

    106ms
    |
    4ms
    |
    43ms
  • 72.45.49.216

    Breezeline

    AS11776

    Saint Michaels

    38.7851, -76.2244

    100% uptime

    105ms
    |
    1ms
    |
    140ms
  • 24.145.124.98

    Breezeline

    AS11776

    Salamanca

    42.1578, -78.7150

    98% uptime

    115ms
    |
    4ms
    |
    223ms
  • 50.147.20.153

    Comcast Cable Communications, LLC

    AS7922

    Salem

    37.2935, -80.0548

    100% uptime

    110ms
    |
    5ms
    |
    152ms
  • 50.238.199.244

    Comcast Cable Communications, LLC

    AS7922

    Salem

    37.2935, -80.0548

    100% uptime

    114ms
    |
    5ms
    |
    161ms
  • 73.60.101.163

    Comcast Cable Communications, LLC

    AS7922

    Salem

    42.5198, -70.8955

    98% uptime

    122ms
    |
    2ms
    |
    226ms
  • 73.87.178.242

    Comcast Cable Communications, LLC

    AS7922

    Salisbury

    38.3607, -75.5994

    100% uptime

    123ms
    |
    6ms
    |
    212ms
  • 73.128.59.244

    Comcast Cable Communications, LLC

    AS7922

    Salisbury

    38.3607, -75.5994

    100% uptime

    120ms
    |
    2ms
    |
    186ms
  • 134.56.91.105

    Hotwire Communications

    AS23089

    Salisbury

    35.6710, -80.4742

    100% uptime

    125ms
    |
    11ms
    |
    260ms
  • 206.126.202.112

    Sallisaw Municipal Authority

    AS20329

    Sallisaw

    35.4604, -94.7875

    99% uptime

    127ms
    |
    3ms
    |
    181ms
  • 23.142.200.126

    POLONETWORK LIMITED

    AS151338

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    131ms
    |
    3ms
    |
    93ms
  • 50.115.46.106

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    133ms
    |
    1ms
    |
    114ms
  • 50.115.46.107

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    132ms
    |
    1ms
    |
    118ms
  • 50.115.46.109

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    134ms
    |
    1ms
    |
    110ms
  • 50.115.46.110

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    133ms
    |
    0ms
    |
    114ms
  • 50.168.78.116

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    155ms
    |
    2ms
    |
    315ms
  • 50.176.97.5

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    175ms
    |
    8ms
    |
    326ms
  • 50.222.146.129

    Comcast Cable Communications, LLC

    AS33660

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    152ms
    |
    4ms
    |
    120ms
  • 65.153.43.242

    CenturyLink Communications, LLC

    AS209

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    144ms
    |
    10ms
    |
    300ms
  • 65.181.53.66

    FirstDigital Communications, LLC

    AS13415

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    144ms
    |
    7ms
    |
    201ms
  • 67.161.240.246

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    174ms
    |
    3ms
    |
    311ms
  • 73.228.125.234

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    172ms
    |
    2ms
    |
    98ms
  • 76.27.20.152

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    159ms
    |
    5ms
    |
    331ms
  • 76.129.123.183

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    160ms
    |
    2ms
    |
    16ms
  • 76.164.224.10

    KSB Industries, LLC

    AS400690

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    129ms
    |
    3ms
    |
    190ms
  • 76.164.226.8

    KSB Industries, LLC

    AS400690

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    134ms
    |
    6ms
    |
    217ms
  • 76.164.226.30

    KSB Industries, LLC

    AS400690

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    132ms
    |
    9ms
    |
    174ms
  • 76.164.226.81

    KSB Industries, LLC

    AS400690

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    130ms
    |
    3ms
    |
    192ms
  • 96.92.81.25

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    156ms
    |
    3ms
    |
    319ms
  • 97.75.169.210

    FirstDigital Communications, LLC

    AS13415

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    130ms
    |
    7ms
    |
    34ms
  • 104.143.66.228

    KSB Industries, LLC

    AS400690

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    129ms
    |
    4ms
    |
    195ms
  • 107.3.98.234

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    168ms
    |
    3ms
    |
    100ms
  • 107.3.99.227

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    170ms
    |
    52ms
    |
    104ms
  • 108.171.206.186

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    130ms
    |
    0ms
    |
    100ms
  • 108.171.206.188

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    130ms
    |
    2ms
    |
    102ms
  • 108.171.206.190

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    130ms
    |
    3ms
    |
    100ms
  • 108.171.206.194

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    128ms
    |
    3ms
    |
    107ms
  • 108.171.206.195

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    130ms
    |
    3ms
    |
    100ms
  • 108.171.206.196

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    128ms
    |
    2ms
    |
    108ms
  • 108.171.206.197

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    130ms
    |
    2ms
    |
    96ms
  • 136.36.111.95

    Google Fiber Inc.

    AS16591

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    144ms
    |
    6ms
    |
    42ms
  • 136.38.203.104

    Google Fiber Inc.

    AS16591

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    145ms
    |
    6ms
    |
    209ms
  • 136.59.149.54

    Google Fiber Inc.

    AS16591

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    150ms
    |
    13ms
    |
    157ms
  • 136.59.157.191

    Google Fiber Inc.

    AS16591

    Salt Lake City

    40.7608, -111.8911

    98% uptime

    150ms
    |
    11ms
    |
    129ms
  • 150.241.206.2

    POLONETWORK LIMITED

    AS151338

    Salt Lake City

    40.7608, -111.8911

    96% uptime

    131ms
    |
    9ms
    |
    94ms
  • 162.210.20.1

    Connext LLC

    AS399282

    Salt Lake City

    40.7608, -111.8911

    96% uptime

    129ms
    |
    2ms
    |
    228ms
  • 162.210.21.1

    Connext LLC

    AS399282

    Salt Lake City

    40.7608, -111.8911

    96% uptime

    144ms
    |
    4ms
    |
    218ms
  • 162.210.23.170

    Connext LLC

    AS399282

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    145ms
    |
    5ms
    |
    46ms
  • 172.245.235.96

    BrainStorm Network, Inc

    AS136258

    Salt Lake City

    40.7608, -111.8911

    96% uptime

    141ms
    |
    1ms
    |
    96ms
  • 172.245.235.148

    BrainStorm Network, Inc

    AS136258

    Salt Lake City

    40.7608, -111.8911

    96% uptime

    143ms
    |
    3ms
    |
    96ms
  • 174.52.105.151

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    171ms
    |
    3ms
    |
    91ms
  • 174.162.185.142

    Comcast Cable Communications, LLC

    AS7922

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    156ms
    |
    2ms
    |
    108ms
  • 192.69.210.42

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    130ms
    |
    2ms
    |
    111ms
  • 192.69.210.43

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    128ms
    |
    3ms
    |
    108ms
  • 192.69.210.45

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    129ms
    |
    3ms
    |
    110ms
  • 192.69.221.236

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    99% uptime

    129ms
    |
    3ms
    |
    100ms
  • 192.69.221.237

    WebNX, Inc.

    AS18450

    Salt Lake City

    40.7608, -111.8911

    100% uptime

    130ms
    |
    3ms
    |
    105ms