DNS Servers

United States of America 4312 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

  • 170.76.160.242

    BOLT Fiber Optic Services

    AS393467

    Grove

    36.5937, -94.7691

    98% uptime

    133ms
    |
    11ms
    |
    49ms
  • 24.48.140.71

    OPTICALTEL

    AS29866

    Groveland

    28.5581, -81.8512

    100% uptime

    124ms
    |
    16ms
    |
    15ms
  • 67.219.170.166

    Panhandle Telecommunications Systems, INC.

    AS11067

    Gruver

    36.2650, -101.4063

    99% uptime

    127ms
    |
    3ms
    |
    179ms
  • 199.89.11.137

    Alpine Communications L.C.

    AS399559

    Guttenberg

    42.7858, -91.0996

    100% uptime

    111ms
    |
    2ms
    |
    185ms
  • 208.93.196.147

    Antietam Broadband

    AS14291

    Hagerstown

    39.6418, -77.7200

    100% uptime

    101ms
    |
    15ms
    |
    12ms
  • 69.67.132.132

    Tombigbee Communications, LLC

    AS46592

    Haleyville

    34.2265, -87.6214

    98% uptime

    115ms
    |
    1ms
    |
    58ms
  • 139.60.150.14

    Tombigbee Communications, LLC

    AS46592

    Hamilton

    34.1423, -87.9886

    96% uptime

    116ms
    |
    7ms
    |
    122ms
  • 73.74.106.187

    Comcast Cable Communications, LLC

    AS7922

    Hammond

    41.5834, -87.5000

    96% uptime

    127ms
    |
    2ms
    |
    28ms
  • 199.68.249.107

    Summit Broadband

    AS23314

    Harlem Heights

    26.5162, -81.9279

    98% uptime

    120ms
    |
    2ms
    |
    179ms
  • 38.158.151.34

    Vexus Fiber

    AS398149

    Harlingen

    26.1906, -97.6961

    98% uptime

    143ms
    |
    3ms
    |
    246ms
  • 68.207.18.38

    Charter Communications Inc

    AS11427

    Harlingen

    26.1906, -97.6961

    100% uptime

    148ms
    |
    2ms
    |
    244ms
  • 23.31.215.228

    Comcast Cable Communications, LLC

    AS7922

    Harrington

    38.9237, -75.5777

    98% uptime

    118ms
    |
    9ms
    |
    114ms
  • 216.16.96.87

    Clarity Telecom LLC

    AS20412

    Harrisburg

    43.4314, -96.6973

    100% uptime

    131ms
    |
    3ms
    |
    231ms
  • 47.23.181.146

    Cablevision Systems Corp.

    AS6128

    Harrison

    40.9690, -73.7126

    99% uptime

    102ms
    |
    1ms
    |
    102ms
  • 174.169.135.100

    Comcast Cable Communications, LLC

    AS7922

    Hartford

    41.7637, -72.6851

    100% uptime

    113ms
    |
    1ms
    |
    200ms
  • 208.25.96.3

    Bloomingdale Communications Inc.

    AS22200

    Hartford

    42.2067, -86.1667

    99% uptime

    129ms
    |
    1ms
    |
    157ms
  • 76.58.160.162

    Charter Communications Inc

    AS10796

    Hartland

    43.1050, -88.3420

    96% uptime

    118ms
    |
    2ms
    |
    358ms
  • 209.71.175.90

    Surf Air Wireless, LLC

    AS13428

    Harvard

    42.4222, -88.6137

    100% uptime

    111ms
    |
    11ms
    |
    211ms
  • 108.163.113.233

    Dakota Carrier Network

    AS26794

    Harwood

    46.9794, -96.8806

    100% uptime

    140ms
    |
    2ms
    |
    78ms
  • 140.228.148.198

    Allo Communications LLC

    AS15108

    Hastings

    40.5861, -98.3884

    100% uptime

    115ms
    |
    4ms
    |
    152ms
  • 50.86.75.162

    C Spire Fiber

    AS11272

    Hattiesburg

    31.3271, -89.2903

    98% uptime

    114ms
    |
    2ms
    |
    185ms
  • 66.175.144.92

    C Spire Fiber

    AS11272

    Hattiesburg

    31.3271, -89.2903

    100% uptime

    111ms
    |
    1ms
    |
    266ms
  • 65.51.24.119

    Cablevision Lightpath LLC

    AS54004

    Hauppauge

    40.8257, -73.2026

    100% uptime

    94ms
    |
    1ms
    |
    102ms
  • 50.199.194.142

    Comcast Cable Communications, LLC

    AS7922

    Haverhill

    42.7762, -71.0773

    100% uptime

    120ms
    |
    3ms
    |
    159ms
  • 70.33.0.100

    Triangle Communications

    AS40933

    Havre

    48.5500, -109.6841

    98% uptime

    155ms
    |
    7ms
    |
    415ms
  • 64.67.90.213

    PenTeleData Inc.

    AS3737

    Hawley

    41.4759, -75.1821

    96% uptime

    104ms
    |
    2ms
    |
    168ms
  • 64.67.97.193

    PenTeleData Inc.

    AS3737

    Hawley

    41.4759, -75.1821

    100% uptime

    104ms
    |
    2ms
    |
    30ms
  • 64.67.98.251

    PenTeleData Inc.

    AS3737

    Hawley

    41.4759, -75.1821

    98% uptime

    103ms
    |
    2ms
    |
    168ms
  • 184.23.44.121

    Sonic Telecom LLC

    AS46375

    Hayward

    37.6688, -122.0808

    98% uptime

    163ms
    |
    3ms
    |
    195ms
  • 70.44.238.87

    PenTeleData Inc.

    AS3737

    Hazleton

    40.9584, -75.9746

    100% uptime

    99ms
    |
    2ms
    |
    158ms
  • 66.171.0.125

    Eastex Telephone Cooperative, Inc.

    AS19201

    Henderson

    32.2131, -94.7834

    100% uptime

    127ms
    |
    4ms
    |
    74ms
  • 50.193.187.177

    Comcast Cable Communications, LLC

    AS7922

    Hendersonville

    36.3048, -86.6200

    100% uptime

    139ms
    |
    7ms
    |
    86ms
  • 174.62.100.54

    Comcast Cable Communications, LLC

    AS7922

    Hercules

    38.0171, -122.2886

    100% uptime

    176ms
    |
    2ms
    |
    329ms
  • 96.46.113.86

    WT Services, Inc.

    AS46238

    Hereford

    34.8152, -102.3993

    100% uptime

    130ms
    |
    2ms
    |
    246ms
  • 174.130.61.208

    Windstream Communications LLC

    AS7029

    Hiawassee

    34.9493, -83.7574

    100% uptime

    127ms
    |
    2ms
    |
    218ms
  • 76.77.208.23

    Rainbow Communications, L.L.C.

    AS1423

    Hiawatha

    39.8525, -95.5358

    98% uptime

    115ms
    |
    1ms
    |
    154ms
  • 63.45.103.17

    Verizon Business

    AS6167

    Hickory Hills

    41.7256, -87.8251

    100% uptime

    166ms
    |
    10ms
    |
    110ms
  • 63.45.252.90

    Verizon Business

    AS6167

    Hickory Hills

    41.7256, -87.8251

    96% uptime

    162ms
    |
    34ms
    |
    106ms
  • 96.43.255.174

    All West Communications, Inc.

    AS13614

    Hideout

    40.6380, -111.4108

    100% uptime

    129ms
    |
    3ms
    |
    38ms
  • 24.13.237.170

    Comcast Cable Communications, LLC

    AS7922

    Highland Park

    42.1817, -87.8003

    98% uptime

    121ms
    |
    4ms
    |
    204ms
  • 40.133.225.71

    Windstream Communications LLC

    AS7029

    Highlands Ranch

    39.5539, -104.9694

    99% uptime

    169ms
    |
    14ms
    |
    241ms
  • 5.78.31.91

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    98% uptime

    169ms
    |
    9ms
    |
    261ms
  • 5.78.43.29

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    9ms
    |
    2ms
  • 5.78.44.241

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    12ms
    |
    68ms
  • 5.78.52.8

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    98% uptime

    170ms
    |
    6ms
    |
    186ms
  • 5.78.68.125

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    168ms
    |
    5ms
    |
    184ms
  • 5.78.71.135

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    4ms
    |
    54ms
  • 5.78.77.85

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    99% uptime

    168ms
    |
    6ms
    |
    258ms
  • 5.78.85.55

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    5ms
    |
    68ms
  • 5.78.87.50

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    98% uptime

    169ms
    |
    9ms
    |
    176ms
  • 5.78.105.62

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    170ms
    |
    8ms
    |
    190ms
  • 5.78.127.208

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    10ms
    |
    196ms
  • 5.78.139.117

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    10ms
    |
    180ms
  • 5.78.141.85

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    5ms
    |
    184ms
  • 5.78.191.233

    Hetzner Online GmbH

    AS212317

    Hillsboro

    45.5229, -122.9898

    100% uptime

    169ms
    |
    4ms
    |
    67ms
  • 165.75.3.163

    Sirius Computer Solutions, Inc.

    AS63474

    Hoffman Estates

    42.0428, -88.0798

    98% uptime

    121ms
    |
    9ms
    |
    9ms
  • 47.132.51.204

    Charter Communications LLC

    AS20115

    Holly Ridge

    34.4954, -77.5550

    100% uptime

    140ms
    |
    3ms
    |
    89ms
  • 50.185.167.49

    Comcast Cable Communications, LLC

    AS7922

    Hollywood

    26.0112, -80.1495

    100% uptime

    146ms
    |
    2ms
    |
    171ms
  • 75.74.236.222

    Comcast Cable Communications, LLC

    AS7922

    Hollywood

    26.0112, -80.1495

    96% uptime

    150ms
    |
    3ms
    |
    264ms
  • 75.145.226.89

    Comcast Cable Communications, LLC

    AS7922

    Hollywood

    26.0112, -80.1495

    100% uptime

    146ms
    |
    3ms
    |
    66ms
  • 200.62.3.11

    IFX Corporation

    AS18747

    Hollywood

    26.0112, -80.1495

    100% uptime

    132ms
    |
    4ms
    |
    244ms
  • 172.110.81.11

    Minburn Communications

    AS399753

    Hondo

    29.3475, -99.1414

    100% uptime

    109ms
    |
    2ms
    |
    136ms
  • 141.239.146.144

    Hawaiian Telcom Services Company, Inc.

    AS36149

    Honolulu

    21.3069, -157.8583

    98% uptime

    259ms
    |
    9ms
    |
    318ms
  • 208.72.154.103

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    100% uptime

    201ms
    |
    2ms
    |
    138ms
  • 208.72.154.178

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    98% uptime

    201ms
    |
    19ms
    |
    129ms
  • 208.72.154.211

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    100% uptime

    201ms
    |
    7ms
    |
    213ms
  • 208.83.232.244

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    99% uptime

    202ms
    |
    2ms
    |
    131ms
  • 208.83.233.182

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    99% uptime

    202ms
    |
    4ms
    |
    212ms
  • 208.83.237.113

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    96% uptime

    201ms
    |
    3ms
    |
    119ms
  • 208.83.239.55

    The Constant Company, LLC

    AS20473

    Honolulu

    21.3069, -157.8583

    100% uptime

    203ms
    |
    3ms
    |
    211ms
  • 173.76.130.242

    Verizon Business

    AS701

    Hopkinton

    42.2287, -71.5226

    100% uptime

    105ms
    |
    3ms
    |
    46ms
  • 206.255.248.47

    Cablelynx

    AS53508

    Hot Springs

    34.5037, -93.0552

    100% uptime

    139ms
    |
    4ms
    |
    201ms
  • 74.211.89.218

    TDS TELECOM

    AS4181

    Hot Springs Landing

    33.2073, -107.2106

    100% uptime

    183ms
    |
    2ms
    |
    159ms
  • 12.43.98.42

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    100% uptime

    145ms
    |
    3ms
    |
    168ms
  • 12.48.62.169

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    98% uptime

    143ms
    |
    2ms
    |
    206ms
  • 12.50.210.10

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    99% uptime

    145ms
    |
    3ms
    |
    168ms
  • 12.117.245.186

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    99% uptime

    146ms
    |
    3ms
    |
    169ms
  • 23.128.248.2

    StormyCloud Inc

    AS400226

    Houston

    29.7633, -95.3633

    100% uptime

    115ms
    |
    6ms
    |
    131ms
  • 50.148.32.9

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    99% uptime

    140ms
    |
    2ms
    |
    62ms
  • 50.172.149.182

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    99% uptime

    134ms
    |
    1ms
    |
    182ms
  • 50.172.193.250

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    98% uptime

    140ms
    |
    3ms
    |
    201ms
  • 50.172.206.66

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    133ms
    |
    1ms
    |
    183ms
  • 50.172.219.42

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    142ms
    |
    4ms
    |
    250ms
  • 50.210.206.229

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    98% uptime

    144ms
    |
    2ms
    |
    291ms
  • 50.225.199.114

    ENETSolutions L.L.C

    AS54321

    Houston

    29.7633, -95.3633

    100% uptime

    129ms
    |
    8ms
    |
    96ms
  • 66.81.212.2

    5x5 Telecom

    AS63430

    Houston

    29.7633, -95.3633

    100% uptime

    116ms
    |
    1ms
    |
    148ms
  • 67.200.145.68

    Logix

    AS25956

    Houston

    29.7633, -95.3633

    100% uptime

    132ms
    |
    4ms
    |
    100ms
  • 73.76.208.230

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    149ms
    |
    6ms
    |
    267ms
  • 73.232.28.217

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    98% uptime

    148ms
    |
    2ms
    |
    309ms
  • 96.95.242.1

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    151ms
    |
    3ms
    |
    306ms
  • 98.57.115.228

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    146ms
    |
    3ms
    |
    266ms
  • 98.196.240.110

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    96% uptime

    147ms
    |
    3ms
    |
    131ms
  • 98.198.96.72

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    99% uptime

    151ms
    |
    3ms
    |
    278ms
  • 108.241.205.209

    AT&T Enterprises, LLC

    AS7018

    Houston

    29.7633, -95.3633

    98% uptime

    136ms
    |
    2ms
    |
    208ms
  • 139.94.109.0

    TACHUS INFRASTRUCTURE LLC

    AS397412

    Houston

    29.7633, -95.3633

    100% uptime

    133ms
    |
    2ms
    |
    154ms
  • 149.52.95.120

    SkyQuantum Internet Service

    AS55201

    Houston

    29.7633, -95.3633

    98% uptime

    141ms
    |
    0ms
    |
    74ms
  • 174.170.42.133

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    146ms
    |
    3ms
    |
    270ms
  • 174.170.79.91

    Comcast Cable Communications, LLC

    AS7922

    Houston

    29.7633, -95.3633

    100% uptime

    144ms
    |
    4ms
    |
    281ms
  • 199.101.246.18

    Fibertown

    AS19366

    Houston

    29.7633, -95.3633

    100% uptime

    121ms
    |
    3ms
    |
    146ms
  • 206.126.47.50

    Logix

    AS25956

    Houston

    29.7633, -95.3633

    98% uptime

    134ms
    |
    0ms
    |
    156ms