DNS Servers

United States of America 4309 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

  • 64.111.22.116

    Data102

    AS33302

    Denver

    39.7392, -104.9847

    99% uptime

    134ms
    |
    7ms
    |
    166ms
  • 64.111.22.117

    Data102

    AS33302

    Denver

    39.7392, -104.9847

    100% uptime

    134ms
    |
    0ms
    |
    167ms
  • 66.110.185.130

    Otava, LLC

    AS26891

    Denver

    39.7392, -104.9847

    99% uptime

    136ms
    |
    8ms
    |
    145ms
  • 67.165.233.203

    Comcast Cable Communications, LLC

    AS7922

    Denver

    39.7392, -104.9847

    100% uptime

    154ms
    |
    3ms
    |
    271ms
  • 70.57.14.83

    CenturyLink Communications, LLC

    AS209

    Denver

    39.7392, -104.9847

    100% uptime

    141ms
    |
    0ms
    |
    72ms
  • 71.211.166.226

    CenturyLink Communications, LLC

    AS209

    Denver

    39.7392, -104.9847

    100% uptime

    141ms
    |
    0ms
    |
    164ms
  • 71.218.232.5

    CenturyLink Communications, LLC

    AS209

    Denver

    39.7392, -104.9847

    89% uptime

    142ms
    |
    0ms
    |
    172ms
  • 73.153.147.127

    Comcast Cable Communications, LLC

    AS7922

    Denver

    39.7392, -104.9847

    100% uptime

    155ms
    |
    1ms
    |
    286ms
  • 73.229.33.146

    Comcast Cable Communications, LLC

    AS7922

    Denver

    39.7392, -104.9847

    100% uptime

    153ms
    |
    8ms
    |
    284ms
  • 74.63.130.94

    Flexential Colorado Corp.

    AS13649

    Denver

    39.7392, -104.9847

    100% uptime

    134ms
    |
    0ms
    |
    42ms
  • 74.121.170.18

    ERP Suites

    AS14352

    Denver

    39.7392, -104.9847

    94% uptime

    138ms
    |
    0ms
    |
    157ms
  • 75.71.255.82

    Comcast Cable Communications, LLC

    AS7922

    Denver

    39.7392, -104.9847

    99% uptime

    154ms
    |
    1ms
    |
    282ms
  • 172.98.128.161

    Xiber

    AS393950

    Denver

    39.7392, -104.9847

    100% uptime

    117ms
    |
    1ms
    |
    84ms
  • 184.166.104.158

    Charter Communications LLC

    AS33588

    Denver

    39.7392, -104.9847

    100% uptime

    194ms
    |
    2ms
    |
    284ms
  • 192.199.241.66

    Handy Networks, LLC

    AS30475

    Denver

    39.7392, -104.9847

    95% uptime

    118ms
    |
    1ms
    |
    230ms
  • 208.85.60.6

    Clearfly Communications

    AS27400

    Denver

    39.7392, -104.9847

    100% uptime

    134ms
    |
    0ms
    |
    144ms
  • 216.120.201.14

    Shock Hosting LLC

    AS395092

    Denver

    39.7392, -104.9847

    98% uptime

    118ms
    |
    5ms
    |
    128ms
  • 216.239.233.179

    Latisys-Denver, LLC

    AS29863

    Denver

    39.7392, -104.9847

    100% uptime

    120ms
    |
    1ms
    |
    145ms
  • 71.232.253.80

    Comcast Cable Communications, LLC

    AS7922

    Derry Village

    42.8918, -71.3120

    100% uptime

    121ms
    |
    2ms
    |
    188ms
  • 20.118.25.179

    Microsoft Corporation

    AS8075

    Des Moines

    41.6005, -93.6091

    100% uptime

    125ms
    |
    2ms
    |
    93ms
  • 23.81.209.137

    Leaseweb USA, Inc.

    AS396190

    Des Moines

    47.4018, -122.3243

    99% uptime

    163ms
    |
    2ms
    |
    112ms
  • 40.78.146.89

    Microsoft Corporation

    AS8075

    Des Moines

    41.6005, -93.6091

    100% uptime

    122ms
    |
    3ms
    |
    173ms
  • 52.228.225.52

    Microsoft Corporation

    AS8075

    Des Moines

    41.6005, -93.6091

    100% uptime

    124ms
    |
    3ms
    |
    34ms
  • 96.31.30.50

    Premier Communications

    AS53347

    Des Moines

    41.6727, -93.5722

    100% uptime

    116ms
    |
    1ms
    |
    184ms
  • 167.142.158.10

    Aureon Network Services

    AS5056

    Des Moines

    41.6005, -93.6091

    98% uptime

    108ms
    |
    3ms
    |
    51ms
  • 173.186.141.161

    Windstream Communications LLC

    AS7029

    Des Moines

    41.6005, -93.6091

    100% uptime

    130ms
    |
    19ms
    |
    94ms
  • 208.71.32.1

    Infobunker, L.L.C.

    AS36436

    Des Moines

    41.6005, -93.6091

    100% uptime

    113ms
    |
    3ms
    |
    201ms
  • 12.50.55.163

    AT&T Enterprises, LLC

    AS7018

    De Soto

    38.1395, -90.5551

    99% uptime

    120ms
    |
    1ms
    |
    164ms
  • 64.239.48.92

    LiveOak Fiber

    AS395035

    Destin

    30.3935, -86.4958

    100% uptime

    133ms
    |
    1ms
    |
    272ms
  • 142.190.109.166

    Uniti Fiber Holdings Inc.

    AS13760

    Destin

    30.3935, -86.4958

    100% uptime

    126ms
    |
    1ms
    |
    54ms
  • 23.137.84.42

    GTHost

    AS63023

    Detroit

    42.3314, -83.0457

    99% uptime

    107ms
    |
    3ms
    |
    114ms
  • 23.137.84.89

    GTHost

    AS63023

    Detroit

    42.3314, -83.0457

    100% uptime

    107ms
    |
    3ms
    |
    238ms
  • 23.137.84.197

    GTHost

    AS63023

    Detroit

    42.3314, -83.0457

    99% uptime

    107ms
    |
    4ms
    |
    232ms
  • 50.218.185.225

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    99% uptime

    118ms
    |
    1ms
    |
    174ms
  • 50.249.169.34

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    100% uptime

    125ms
    |
    4ms
    |
    59ms
  • 68.233.36.218

    Interconnecx, LLC

    AS13737

    Detroit

    42.3314, -83.0457

    100% uptime

    106ms
    |
    2ms
    |
    84ms
  • 69.39.94.130

    123.Net, Inc.

    AS12129

    Detroit

    42.3314, -83.0457

    100% uptime

    108ms
    |
    2ms
    |
    83ms
  • 69.48.166.152

    A2 Hosting, Inc.

    AS55293

    Detroit

    42.3314, -83.0457

    99% uptime

    118ms
    |
    5ms
    |
    234ms
  • 208.122.212.153

    MOJOHOST

    AS27589

    Detroit

    42.3314, -83.0457

    99% uptime

    113ms
    |
    1ms
    |
    91ms
  • 216.137.177.7

    A2 Hosting, Inc.

    AS55293

    Detroit

    42.3314, -83.0457

    100% uptime

    118ms
    |
    8ms
    |
    114ms
  • 38.137.126.223

    Sho Me Technologies, LLC

    AS55140

    Dixon

    37.9917, -92.0938

    99% uptime

    116ms
    |
    13ms
    |
    200ms
  • 137.239.208.199

    Momentum Telecom, Inc.

    AS25645

    Dock Junction

    31.2024, -81.5168

    94% uptime

    122ms
    |
    0ms
    |
    39ms
  • 74.51.170.186

    LAUREL HIGHLAND TELEPHONE COMPANY

    AS21555

    Donegal

    40.1126, -79.3825

    100% uptime

    108ms
    |
    5ms
    |
    144ms
  • 75.145.226.89

    Comcast Cable Communications, LLC

    AS7922

    Doral

    25.8195, -80.3553

    99% uptime

    144ms
    |
    6ms
    |
    90ms
  • 100.6.160.235

    Verizon Business

    AS701

    Dormont

    40.3959, -80.0331

    99% uptime

    109ms
    |
    1ms
    |
    64ms
  • 173.75.34.164

    Verizon Business

    AS701

    Dormont

    40.3959, -80.0331

    100% uptime

    117ms
    |
    1ms
    |
    113ms
  • 134.199.205.250

    DigitalOcean, LLC

    AS14061

    Douglasville

    33.7515, -84.7477

    100% uptime

    107ms
    |
    1ms
    |
    56ms
  • 207.5.230.172

    GREYSTONE POWER CORPORATION, AN ELECTRIC MEMBERSHIP CORPORATION

    AS54813

    Douglasville

    33.6897, -84.7446

    89% uptime

    112ms
    |
    1ms
    |
    269ms
  • 73.172.85.25

    Comcast Cable Communications, LLC

    AS7922

    Dover

    39.1582, -75.5244

    99% uptime

    122ms
    |
    1ms
    |
    155ms
  • 68.199.190.195

    Cablevision Systems Corp.

    AS6128

    Dover Plains

    41.7412, -73.5765

    94% uptime

    100ms
    |
    2ms
    |
    165ms
  • 96.30.225.135

    Cherryland Services Inc

    AS13904

    Dragoon

    32.0281, -110.0387

    100% uptime

    160ms
    |
    3ms
    |
    65ms
  • 96.30.230.141

    Cherryland Services Inc

    AS13904

    Dragoon

    32.0281, -110.0387

    100% uptime

    159ms
    |
    72ms
    |
    146ms
  • 38.46.222.187

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    100% uptime

    130ms
    |
    1ms
    |
    80ms
  • 38.58.180.131

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    99% uptime

    130ms
    |
    13ms
    |
    1ms
  • 38.58.183.210

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    94% uptime

    130ms
    |
    0ms
    |
    33ms
  • 38.92.24.190

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    100% uptime

    130ms
    |
    0ms
    |
    152ms
  • 68.169.43.20

    THG HOSTING LIMITED

    AS13213

    Draper

    40.5247, -111.8638

    100% uptime

    130ms
    |
    3ms
    |
    154ms
  • 107.2.62.188

    Comcast Cable Communications, LLC

    AS7922

    Drexel Heights

    32.1412, -111.0284

    99% uptime

    171ms
    |
    3ms
    |
    322ms
  • 72.36.41.7

    Advanced Communications Technology

    AS30110

    Dubois

    43.5336, -109.6304

    100% uptime

    128ms
    |
    2ms
    |
    210ms
  • 50.233.155.251

    Comcast Cable Communications, LLC

    AS7922

    Dumbarton

    37.6038, -77.4914

    100% uptime

    114ms
    |
    2ms
    |
    110ms
  • 64.68.245.253

    Cherryland Services Inc

    AS13904

    Duncan

    32.7215, -109.1053

    89% uptime

    161ms
    |
    16ms
    |
    178ms
  • 64.68.246.107

    Cherryland Services Inc

    AS13904

    Duncan

    32.7215, -109.1053

    100% uptime

    169ms
    |
    52ms
    |
    205ms
  • 67.61.165.51

    CABLE ONE, INC.

    AS11492

    Duncan

    34.5023, -97.9578

    100% uptime

    147ms
    |
    1ms
    |
    238ms
  • 67.61.165.175

    CABLE ONE, INC.

    AS11492

    Duncan

    34.5023, -97.9578

    100% uptime

    146ms
    |
    1ms
    |
    127ms
  • 96.68.238.77

    Comcast Cable Communications, LLC

    AS7922

    Dundalk

    39.2507, -76.5205

    100% uptime

    113ms
    |
    1ms
    |
    130ms
  • 24.112.27.241

    Vyve Broadband

    AS35986

    Durant

    33.9940, -96.3708

    100% uptime

    130ms
    |
    4ms
    |
    178ms
  • 38.141.244.154

    Vyve Broadband

    AS35986

    Durant

    33.9940, -96.3708

    100% uptime

    150ms
    |
    19ms
    |
    270ms
  • 140.82.155.243

    360 Broadband, LLC

    AS1441

    Durant

    33.9940, -96.3708

    100% uptime

    132ms
    |
    1ms
    |
    194ms
  • 173.244.247.53

    North State Telephone, LLC

    AS22709

    Durham

    35.9940, -78.8986

    100% uptime

    114ms
    |
    1ms
    |
    109ms
  • 174.109.99.84

    Charter Communications Inc

    AS11426

    Durham

    35.9940, -78.8986

    100% uptime

    136ms
    |
    5ms
    |
    257ms
  • 104.226.192.122

    Frontier Communications of America, Inc.

    AS5650

    East Hartford

    41.7823, -72.6120

    99% uptime

    102ms
    |
    1ms
    |
    105ms
  • 72.44.102.129

    STELLAR Broadband

    AS10423

    East Lansing

    42.7370, -84.4839

    100% uptime

    115ms
    |
    2ms
    |
    168ms
  • 64.121.167.63

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    100% uptime

    106ms
    |
    1ms
    |
    244ms
  • 65.78.70.129

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    98% uptime

    112ms
    |
    8ms
    |
    181ms
  • 146.115.236.100

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    100% uptime

    107ms
    |
    1ms
    |
    178ms
  • 216.164.182.75

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    94% uptime

    111ms
    |
    1ms
    |
    216ms
  • 67.87.100.126

    Cablevision Systems Corp.

    AS6128

    East Patchogue

    40.7670, -72.9962

    99% uptime

    99ms
    |
    1ms
    |
    168ms
  • 104.148.141.131

    Cablevision Systems Corp.

    AS6128

    East Patchogue

    40.7670, -72.9962

    100% uptime

    95ms
    |
    1ms
    |
    144ms
  • 173.63.186.5

    Verizon Business

    AS701

    Eatontown

    40.2962, -74.0510

    100% uptime

    101ms
    |
    1ms
    |
    226ms
  • 170.249.156.194

    Uniti Fiber Holdings Inc.

    AS13760

    Edgewater

    28.9889, -80.9023

    99% uptime

    125ms
    |
    1ms
    |
    113ms
  • 170.249.156.202

    Uniti Fiber Holdings Inc.

    AS13760

    Edgewater

    28.9889, -80.9023

    100% uptime

    125ms
    |
    2ms
    |
    125ms
  • 204.111.176.25

    Shenandoah Cable Television LLC

    AS4922

    Edinburg

    38.8210, -78.5658

    100% uptime

    130ms
    |
    2ms
    |
    118ms
  • 12.157.8.105

    AT&T Enterprises, LLC

    AS7018

    El Centro

    32.7920, -115.5631

    98% uptime

    176ms
    |
    20ms
    |
    110ms
  • 75.91.148.90

    Windstream Communications LLC

    AS7029

    El Dorado

    33.2076, -92.6663

    100% uptime

    128ms
    |
    2ms
    |
    210ms
  • 75.91.148.103

    Windstream Communications LLC

    AS7029

    El Dorado

    33.2076, -92.6663

    99% uptime

    141ms
    |
    2ms
    |
    175ms
  • 107.182.197.34

    CS Technologies

    AS22534

    Eldridge

    41.6581, -90.5846

    98% uptime

    116ms
    |
    5ms
    |
    162ms
  • 12.186.203.203

    AT&T Enterprises, LLC

    AS7018

    Elgin

    42.0376, -88.3186

    98% uptime

    118ms
    |
    12ms
    |
    59ms
  • 149.75.239.136

    RCN

    AS6079

    Elgin

    42.0373, -88.2812

    98% uptime

    125ms
    |
    2ms
    |
    175ms
  • 174.99.142.90

    Charter Communications Inc

    AS11426

    Elizabeth City

    36.2946, -76.2511

    100% uptime

    120ms
    |
    2ms
    |
    56ms
  • 68.53.118.22

    Comcast Cable Communications, LLC

    AS7922

    Elizabethtown

    37.6940, -85.8591

    99% uptime

    136ms
    |
    1ms
    |
    110ms
  • 12.79.189.62

    AT&T Enterprises, LLC

    AS7018

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    118ms
    |
    14ms
    |
    148ms
  • 45.63.64.176

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    0ms
    |
    86ms
  • 45.63.66.231

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    0ms
    |
    82ms
  • 45.63.68.107

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    0ms
    |
    223ms
  • 45.63.70.9

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    0ms
    |
    90ms
  • 45.63.76.37

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    3ms
    |
    84ms
  • 45.63.77.38

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    0ms
    |
    83ms
  • 45.63.77.150

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    0ms
    |
    144ms
  • 45.76.16.55

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    99% uptime

    112ms
    |
    0ms
    |
    84ms
  • 45.76.20.51

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    0ms
    |
    84ms