DNS Servers

United States of America 4393 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

  • 208.70.12.26

    Konceptio Data Services LLC

    AS31998

    Great Falls

    47.5002, -111.3008

    98% uptime

    127ms
    |
    3ms
    |
    204ms
  • 208.184.115.245

    Konceptio Data Services LLC

    AS31998

    Great Falls

    47.5002, -111.3008

    100% uptime

    128ms
    |
    2ms
    |
    204ms
  • 71.205.136.103

    Comcast Cable Communications, LLC

    AS7922

    Greeley

    40.4233, -104.7091

    98% uptime

    156ms
    |
    3ms
    |
    286ms
  • 50.146.148.14

    Comcast Cable Communications, LLC

    AS7922

    Greenacres City

    26.6237, -80.1253

    99% uptime

    131ms
    |
    3ms
    |
    9ms
  • 73.204.104.251

    Comcast Cable Communications, LLC

    AS7922

    Greenacres City

    26.6237, -80.1253

    100% uptime

    144ms
    |
    2ms
    |
    286ms
  • 172.103.79.193

    GCET

    AS395922

    Greenfield

    42.5876, -72.5995

    100% uptime

    103ms
    |
    1ms
    |
    126ms
  • 208.88.255.94

    Hancock Rural Telephone Corp.

    AS11525

    Greenfield

    39.7850, -85.7694

    89% uptime

    103ms
    |
    0ms
    |
    66ms
  • 68.115.181.44

    Charter Communications LLC

    AS20115

    Greenville

    34.8526, -82.3940

    100% uptime

    119ms
    |
    0ms
    |
    92ms
  • 128.92.79.10

    Charter Communications LLC

    AS20115

    Greenville

    34.8526, -82.3940

    100% uptime

    117ms
    |
    0ms
    |
    88ms
  • 50.86.31.62

    C Spire Fiber

    AS11272

    Greenwood

    33.5162, -90.1795

    100% uptime

    118ms
    |
    3ms
    |
    108ms
  • 50.169.193.78

    Comcast Cable Communications, LLC

    AS7922

    Greenwood Village

    39.6172, -104.9508

    99% uptime

    144ms
    |
    1ms
    |
    164ms
  • 134.231.79.101

    Allo Communications LLC

    AS15108

    Gretna

    41.1408, -96.2397

    98% uptime

    129ms
    |
    5ms
    |
    204ms
  • 170.76.160.242

    BOLT Fiber Optic Services

    AS393467

    Grove

    36.5937, -94.7691

    99% uptime

    133ms
    |
    2ms
    |
    23ms
  • 67.219.170.166

    Panhandle Telecommunications Systems, INC.

    AS11067

    Gruver

    36.2650, -101.4063

    100% uptime

    125ms
    |
    15ms
    |
    176ms
  • 199.195.14.247

    Uniti Fiber Holdings Inc.

    AS13760

    Gulf Shores

    30.2460, -87.7008

    94% uptime

    128ms
    |
    11ms
    |
    218ms
  • 66.168.171.64

    Charter Communications LLC

    AS20115

    Guntersville

    34.3582, -86.2945

    94% uptime

    134ms
    |
    1ms
    |
    304ms
  • 173.44.116.193

    BCI Mississippi Broadband,LLC

    AS46687

    Guntown

    34.4432, -88.6598

    100% uptime

    124ms
    |
    10ms
    |
    55ms
  • 108.24.175.227

    Verizon Business

    AS701

    Haddonfield

    39.8915, -75.0377

    100% uptime

    103ms
    |
    2ms
    |
    4ms
  • 208.93.196.147

    Antietam Broadband

    AS14291

    Hagerstown

    39.6418, -77.7200

    99% uptime

    112ms
    |
    1ms
    |
    10ms
  • 64.186.111.250

    Alaska Power & Telephone Company

    AS22079

    Haines

    59.2360, -135.4453

    99% uptime

    173ms
    |
    10ms
    |
    274ms
  • 69.67.132.132

    Tombigbee Communications, LLC

    AS46592

    Haleyville

    34.2265, -87.6214

    100% uptime

    115ms
    |
    1ms
    |
    50ms
  • 12.216.137.51

    AT&T Enterprises, LLC

    AS7018

    Half Moon Bay

    37.4635, -122.4286

    99% uptime

    167ms
    |
    25ms
    |
    227ms
  • 68.207.18.38

    Charter Communications Inc

    AS11427

    Harlingen

    26.1906, -97.6961

    100% uptime

    139ms
    |
    4ms
    |
    236ms
  • 216.16.96.87

    Clarity Telecom LLC

    AS20412

    Harrisburg

    43.4314, -96.6973

    99% uptime

    131ms
    |
    6ms
    |
    256ms
  • 47.23.181.146

    Cablevision Systems Corp.

    AS6128

    Harrison

    40.9690, -73.7126

    100% uptime

    102ms
    |
    2ms
    |
    102ms
  • 144.121.194.162

    Crown Castle Fiber LLC

    AS46887

    Harrison City

    40.3542, -79.6484

    100% uptime

    103ms
    |
    3ms
    |
    154ms
  • 75.150.104.61

    Comcast Cable Communications, LLC

    AS7922

    Hartford

    41.7637, -72.6851

    100% uptime

    124ms
    |
    3ms
    |
    143ms
  • 174.168.37.94

    Comcast Cable Communications, LLC

    AS7922

    Hartford

    41.7637, -72.6851

    100% uptime

    111ms
    |
    1ms
    |
    207ms
  • 208.25.96.3

    Bloomingdale Communications Inc.

    AS22200

    Hartford

    42.2067, -86.1667

    100% uptime

    125ms
    |
    12ms
    |
    160ms
  • 173.21.144.198

    Mediacom Communications Corp

    AS30036

    Harvest

    34.8556, -86.7508

    100% uptime

    116ms
    |
    4ms
    |
    105ms
  • 140.228.148.198

    Allo Communications LLC

    AS15108

    Hastings

    40.5861, -98.3884

    100% uptime

    115ms
    |
    0ms
    |
    147ms
  • 65.51.24.119

    Cablevision Lightpath LLC

    AS54004

    Hauppauge

    40.8257, -73.2026

    100% uptime

    94ms
    |
    0ms
    |
    90ms
  • 207.45.160.11

    TierPoint, LLC

    AS17378

    Hawthorne

    41.1073, -73.7960

    100% uptime

    97ms
    |
    0ms
    |
    130ms
  • 199.192.161.22

    CopperNet Systems, Inc.

    AS33133

    Hayden

    33.0048, -110.7854

    94% uptime

    153ms
    |
    12ms
    |
    257ms
  • 199.192.161.34

    CopperNet Systems, Inc.

    AS33133

    Hayden

    33.0048, -110.7854

    94% uptime

    153ms
    |
    7ms
    |
    251ms
  • 199.192.161.76

    CopperNet Systems, Inc.

    AS33133

    Hayden

    33.0048, -110.7854

    94% uptime

    163ms
    |
    14ms
    |
    307ms
  • 199.192.161.99

    CopperNet Systems, Inc.

    AS33133

    Hayden

    33.0048, -110.7854

    94% uptime

    154ms
    |
    14ms
    |
    294ms
  • 199.192.161.105

    CopperNet Systems, Inc.

    AS33133

    Hayden

    33.0048, -110.7854

    100% uptime

    154ms
    |
    23ms
    |
    308ms
  • 204.9.211.79

    CopperNet Systems, Inc.

    AS33133

    Hayden

    33.0048, -110.7854

    94% uptime

    152ms
    |
    6ms
    |
    256ms
  • 204.9.211.242

    CopperNet Systems, Inc.

    AS33133

    Hayden

    33.0048, -110.7854

    94% uptime

    152ms
    |
    23ms
    |
    276ms
  • 66.171.0.125

    Eastex Telephone Cooperative, Inc.

    AS19201

    Henderson

    32.2131, -94.7834

    100% uptime

    125ms
    |
    3ms
    |
    72ms
  • 199.36.196.121

    Henderson Municipal Power & Light

    AS12155

    Henderson

    37.8362, -87.5900

    99% uptime

    107ms
    |
    1ms
    |
    96ms
  • 24.246.129.229

    Optimum Online

    AS53488

    Hendersonville

    35.3187, -82.4609

    100% uptime

    130ms
    |
    2ms
    |
    376ms
  • 98.10.32.126

    Charter Communications Inc

    AS11351

    Henrietta

    43.0592, -77.6122

    100% uptime

    118ms
    |
    3ms
    |
    220ms
  • 174.130.61.208

    Windstream Communications LLC

    AS7029

    Hiawassee

    34.9493, -83.7574

    98% uptime

    127ms
    |
    4ms
    |
    209ms
  • 63.45.103.17

    Verizon Business

    AS6167

    Hickory Hills

    41.7256, -87.8251

    99% uptime

    171ms
    |
    10ms
    |
    99ms
  • 167.206.112.4

    Cablevision Systems Corp.

    AS6128

    Hicksville

    40.7684, -73.5251

    100% uptime

    91ms
    |
    0ms
    |
    140ms
  • 40.133.225.71

    Windstream Communications LLC

    AS7029

    Highlands Ranch

    39.5539, -104.9694

    100% uptime

    160ms
    |
    131ms
    |
    250ms
  • 5.78.31.91

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    98% uptime

    173ms
    |
    4ms
    |
    248ms
  • 5.78.44.241

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    172ms
    |
    5ms
    |
    108ms
  • 5.78.52.8

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    172ms
    |
    0ms
    |
    188ms
  • 5.78.65.161

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    172ms
    |
    0ms
    |
    183ms
  • 5.78.77.85

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    172ms
    |
    0ms
    |
    260ms
  • 5.78.81.229

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    98% uptime

    172ms
    |
    5ms
    |
    250ms
  • 5.78.86.95

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    99% uptime

    172ms
    |
    5ms
    |
    181ms
  • 5.78.88.44

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    98% uptime

    172ms
    |
    4ms
    |
    208ms
  • 5.78.105.62

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    172ms
    |
    5ms
    |
    201ms
  • 5.78.108.206

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    98% uptime

    172ms
    |
    4ms
    |
    192ms
  • 5.78.139.117

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    172ms
    |
    4ms
    |
    180ms
  • 5.78.191.233

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    172ms
    |
    1ms
    |
    75ms
  • 69.30.55.120

    Affinity VoIP Telecom, Inc.

    AS30478

    Hillsboro

    45.4984, -122.9570

    100% uptime

    157ms
    |
    0ms
    |
    89ms
  • 98.155.8.120

    Charter Communications Inc

    AS20001

    Hilo

    19.7299, -155.0907

    100% uptime

    225ms
    |
    4ms
    |
    90ms
  • 70.61.68.220

    Charter Communications Inc

    AS11426

    Hilton Head Island

    32.1938, -80.7382

    100% uptime

    123ms
    |
    2ms
    |
    98ms
  • 68.64.126.28

    Thacker-Grigsby Communications

    AS1640

    Hindman

    37.3359, -82.9804

    100% uptime

    106ms
    |
    3ms
    |
    184ms
  • 71.239.4.14

    Comcast Cable Communications, LLC

    AS7922

    Hobart

    41.5323, -87.2550

    100% uptime

    138ms
    |
    3ms
    |
    250ms
  • 12.215.214.2

    AT&T Enterprises, LLC

    AS7018

    Hoffman Estates

    42.0428, -88.0798

    98% uptime

    118ms
    |
    15ms
    |
    358ms
  • 140.212.160.30

    Panasonic Corporation of North America

    AS15139

    Hoffman Estates

    42.0428, -88.0798

    100% uptime

    125ms
    |
    1ms
    |
    163ms
  • 74.218.40.214

    Charter Communications Inc

    AS10796

    Holiday Valley

    39.8562, -83.9685

    100% uptime

    128ms
    |
    0ms
    |
    190ms
  • 50.185.167.49

    Comcast Cable Communications, LLC

    AS7922

    Hollywood

    26.0112, -80.1495

    98% uptime

    143ms
    |
    4ms
    |
    156ms
  • 199.188.123.253

    Isotech, Inc

    AS19556

    Holt

    39.4528, -94.3422

    99% uptime

    119ms
    |
    5ms
    |
    162ms
  • 73.45.209.132

    Comcast Cable Communications, LLC

    AS7922

    Homer Glen

    41.6000, -87.9381

    94% uptime

    133ms
    |
    1ms
    |
    220ms
  • 50.171.217.10

    Comcast Cable Communications, LLC

    AS7922

    Homewood

    41.5573, -87.6656

    100% uptime

    125ms
    |
    1ms
    |
    195ms
  • 208.72.154.103

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    100% uptime

    201ms
    |
    0ms
    |
    128ms
  • 208.83.232.244

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    100% uptime

    201ms
    |
    0ms
    |
    107ms
  • 208.83.233.182

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    100% uptime

    204ms
    |
    4ms
    |
    206ms
  • 208.83.239.55

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    100% uptime

    213ms
    |
    5ms
    |
    212ms
  • 173.76.130.242

    Verizon Business

    AS701

    Hopkinton

    42.2287, -71.5226

    100% uptime

    105ms
    |
    1ms
    |
    47ms
  • 207.32.15.66

    Aureon Network Services

    AS5056

    Hospers

    43.0719, -95.9045

    99% uptime

    116ms
    |
    8ms
    |
    68ms
  • 206.255.79.106

    Cablelynx

    AS53508

    Hot Springs

    34.5037, -93.0552

    100% uptime

    138ms
    |
    2ms
    |
    235ms
  • 206.255.248.47

    Cablelynx

    AS53508

    Hot Springs

    34.5037, -93.0552

    100% uptime

    138ms
    |
    1ms
    |
    203ms
  • 8.34.75.42

    Cherryland Services Inc

    AS13904

    Hot Springs Landing

    33.2073, -107.2106

    100% uptime

    145ms
    |
    36ms
    |
    115ms
  • 96.81.24.121

    Comcast Cable Communications, LLC

    AS7922

    Houma

    29.5958, -90.7195

    99% uptime

    148ms
    |
    10ms
    |
    233ms
  • 4.7.144.110

    Level 3 Parent, LLC

    AS3356

    Houston

    29.7633, -95.3633

    100% uptime

    133ms
    |
    0ms
    |
    154ms
  • 12.20.67.154

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    94% uptime

    142ms
    |
    1ms
    |
    112ms
  • 12.48.62.169

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    98% uptime

    142ms
    |
    9ms
    |
    196ms
  • 12.50.210.10

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    100% uptime

    142ms
    |
    1ms
    |
    167ms
  • 12.117.245.186

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    100% uptime

    142ms
    |
    2ms
    |
    166ms
  • 12.144.79.67

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    99% uptime

    142ms
    |
    1ms
    |
    90ms
  • 38.246.64.194

    Cogent Communications, LLC

    AS174

    Houston

    29.7633, -95.3633

    99% uptime

    131ms
    |
    1ms
    |
    34ms
  • 50.148.32.9

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    138ms
    |
    0ms
    |
    64ms
  • 50.172.149.177

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    89% uptime

    139ms
    |
    2ms
    |
    174ms
  • 50.172.149.182

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    94% uptime

    138ms
    |
    2ms
    |
    193ms
  • 50.210.206.105

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    147ms
    |
    1ms
    |
    64ms
  • 50.225.199.114

    ENETSolutions L.L.C

    AS54321

    Houston

    29.7633, -95.3633

    99% uptime

    131ms
    |
    3ms
    |
    102ms
  • 50.233.72.241

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    98% uptime

    138ms
    |
    3ms
    |
    426ms
  • 70.225.172.153

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    89% uptime

    146ms
    |
    1ms
    |
    227ms
  • 73.6.204.91

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    99% uptime

    149ms
    |
    3ms
    |
    94ms
  • 73.76.93.40

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    150ms
    |
    2ms
    |
    312ms
  • 73.77.79.235

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    99% uptime

    152ms
    |
    3ms
    |
    287ms
  • 73.115.207.92

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    151ms
    |
    2ms
    |
    310ms