DNS Servers

United States of America 4311 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

  • 142.190.109.166

    Uniti Fiber Holdings Inc.

    AS13760

    Destin

    30.3935, -86.4958

    100% uptime

    127ms
    |
    7ms
    |
    54ms
  • 23.137.84.42

    GTHost

    AS63023

    Detroit

    42.3314, -83.0457

    99% uptime

    112ms
    |
    4ms
    |
    120ms
  • 23.137.84.89

    GTHost

    AS63023

    Detroit

    42.3314, -83.0457

    99% uptime

    111ms
    |
    3ms
    |
    246ms
  • 50.217.43.230

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    98% uptime

    119ms
    |
    2ms
    |
    187ms
  • 50.218.185.225

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    99% uptime

    121ms
    |
    3ms
    |
    174ms
  • 50.249.169.34

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    100% uptime

    126ms
    |
    4ms
    |
    66ms
  • 68.48.250.194

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    100% uptime

    125ms
    |
    2ms
    |
    209ms
  • 68.59.2.229

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    96% uptime

    128ms
    |
    2ms
    |
    333ms
  • 69.39.94.130

    123.Net, Inc.

    AS12129

    Detroit

    42.3314, -83.0457

    100% uptime

    105ms
    |
    3ms
    |
    80ms
  • 69.48.166.152

    A2 Hosting, Inc.

    AS55293

    Detroit

    42.3314, -83.0457

    99% uptime

    117ms
    |
    7ms
    |
    232ms
  • 69.48.183.183

    A2 Hosting, Inc.

    AS55293

    Detroit

    42.3314, -83.0457

    100% uptime

    117ms
    |
    9ms
    |
    124ms
  • 73.145.93.75

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    100% uptime

    131ms
    |
    1ms
    |
    215ms
  • 74.126.12.154

    123.Net, Inc.

    AS12129

    Detroit

    42.3314, -83.0457

    96% uptime

    126ms
    |
    10ms
    |
    210ms
  • 76.112.89.158

    Comcast Cable Communications, LLC

    AS7922

    Detroit

    42.3314, -83.0457

    98% uptime

    132ms
    |
    2ms
    |
    213ms
  • 104.244.208.18

    Interconnecx, LLC

    AS13737

    Detroit

    42.3314, -83.0458

    98% uptime

    111ms
    |
    10ms
    |
    146ms
  • 152.160.81.222

    123.Net, Inc.

    AS12129

    Detroit

    42.3314, -83.0457

    100% uptime

    131ms
    |
    12ms
    |
    164ms
  • 153.66.252.84

    Space Exploration Technologies Corporation

    AS14593

    Detroit

    42.3314, -83.0457

    98% uptime

    130ms
    |
    5ms
    |
    130ms
  • 207.91.254.58

    123.Net, Inc.

    AS12129

    Detroit

    42.3314, -83.0457

    100% uptime

    106ms
    |
    3ms
    |
    120ms
  • 208.79.208.41

    ManagedWay

    AS53292

    Detroit

    42.3314, -83.0457

    96% uptime

    130ms
    |
    1ms
    |
    223ms
  • 216.137.177.7

    A2 Hosting, Inc.

    AS55293

    Detroit

    42.3314, -83.0457

    100% uptime

    118ms
    |
    15ms
    |
    102ms
  • 24.187.193.90

    Cablevision Systems Corp.

    AS6128

    Dix Hills

    40.8048, -73.3362

    98% uptime

    102ms
    |
    1ms
    |
    121ms
  • 74.51.170.186

    LAUREL HIGHLAND TELEPHONE COMPANY

    AS21555

    Donegal

    40.1126, -79.3825

    99% uptime

    113ms
    |
    4ms
    |
    139ms
  • 8.14.59.210

    Hotwire Communications

    AS23089

    Doral

    25.8195, -80.3553

    100% uptime

    124ms
    |
    11ms
    |
    169ms
  • 50.172.82.153

    Comcast Cable Communications, LLC

    AS7922

    Doral

    25.8195, -80.3553

    98% uptime

    135ms
    |
    6ms
    |
    404ms
  • 139.177.31.161

    Troy Cablevision, Inc.

    AS13825

    Dothan

    31.2232, -85.3905

    100% uptime

    120ms
    |
    4ms
    |
    166ms
  • 134.199.205.250

    DigitalOcean, LLC

    AS14061

    Douglasville

    33.7515, -84.7477

    99% uptime

    106ms
    |
    2ms
    |
    73ms
  • 73.219.252.75

    Comcast Cable Communications, LLC

    AS7922

    Dover

    43.1979, -70.8737

    98% uptime

    120ms
    |
    2ms
    |
    212ms
  • 98.52.1.170

    Comcast Cable Communications, LLC

    AS7922

    Downers Grove

    41.8089, -88.0112

    96% uptime

    122ms
    |
    3ms
    |
    255ms
  • 38.46.222.187

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    99% uptime

    131ms
    |
    2ms
    |
    80ms
  • 38.58.180.131

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    100% uptime

    132ms
    |
    5ms
    |
    1ms
  • 38.58.181.156

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    96% uptime

    131ms
    |
    4ms
    |
    88ms
  • 38.129.138.15

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    100% uptime

    131ms
    |
    2ms
    |
    79ms
  • 38.147.104.167

    FiberState, LLC

    AS26042

    Draper

    40.5247, -111.8638

    100% uptime

    131ms
    |
    7ms
    |
    144ms
  • 68.169.43.20

    THG HOSTING LIMITED

    AS13213

    Draper

    40.5247, -111.8638

    98% uptime

    138ms
    |
    3ms
    |
    181ms
  • 107.2.62.188

    Comcast Cable Communications, LLC

    AS7922

    Drexel Heights

    32.1412, -111.0284

    98% uptime

    170ms
    |
    4ms
    |
    328ms
  • 66.37.75.67

    Citizens Telephone Cooperative

    AS16942

    Dublin

    37.1057, -80.6853

    100% uptime

    95ms
    |
    3ms
    |
    20ms
  • 204.9.211.183

    CopperNet Systems, Inc.

    AS33133

    Dudleyville

    32.9190, -110.7290

    96% uptime

    152ms
    |
    9ms
    |
    298ms
  • 204.9.211.197

    CopperNet Systems, Inc.

    AS33133

    Dudleyville

    32.9190, -110.7290

    96% uptime

    160ms
    |
    10ms
    |
    325ms
  • 66.199.221.204

    Northeast Service Cooperative (ASN-NEWMN)

    AS21873

    Duluth

    46.7833, -92.1066

    100% uptime

    115ms
    |
    6ms
    |
    78ms
  • 66.199.221.206

    Northeast Service Cooperative (ASN-NEWMN)

    AS21873

    Duluth

    46.7833, -92.1066

    100% uptime

    115ms
    |
    3ms
    |
    70ms
  • 50.233.155.250

    Comcast Cable Communications, LLC

    AS7922

    Dumbarton

    37.6038, -77.4914

    100% uptime

    108ms
    |
    5ms
    |
    156ms
  • 50.233.155.251

    Comcast Cable Communications, LLC

    AS7922

    Dumbarton

    37.6038, -77.4914

    99% uptime

    111ms
    |
    3ms
    |
    130ms
  • 67.61.165.175

    CABLE ONE, INC.

    AS11492

    Duncan

    34.5023, -97.9578

    99% uptime

    148ms
    |
    3ms
    |
    116ms
  • 70.15.136.129

    PenTeleData Inc.

    AS3737

    Duncannon

    40.3981, -77.0230

    100% uptime

    106ms
    |
    3ms
    |
    175ms
  • 209.196.167.67

    Breezeline

    AS11776

    Duncansville

    40.4234, -78.4339

    100% uptime

    102ms
    |
    4ms
    |
    136ms
  • 96.68.238.77

    Comcast Cable Communications, LLC

    AS7922

    Dundalk

    39.2507, -76.5205

    100% uptime

    112ms
    |
    8ms
    |
    112ms
  • 65.56.162.166

    Level 3 Parent, LLC

    AS3356

    Durham

    35.9940, -78.8986

    100% uptime

    109ms
    |
    0ms
    |
    54ms
  • 162.217.112.210

    NetActuate, Inc

    AS36236

    Durham

    35.9940, -78.8986

    98% uptime

    108ms
    |
    1ms
    |
    116ms
  • 174.109.99.84

    Charter Communications Inc

    AS11426

    Durham

    35.9940, -78.8986

    100% uptime

    134ms
    |
    11ms
    |
    257ms
  • 66.41.119.54

    Comcast Cable Communications, LLC

    AS7922

    Eagan

    44.8041, -93.1669

    100% uptime

    133ms
    |
    5ms
    |
    236ms
  • 104.37.251.130

    Direct Communications Cedar Valley, LLC

    AS19045

    Eagle Mountain

    40.3141, -112.0069

    98% uptime

    131ms
    |
    1ms
    |
    280ms
  • 139.60.67.180

    Direct Communications Cedar Valley, LLC

    AS19045

    Eagle Mountain

    40.3141, -112.0069

    100% uptime

    131ms
    |
    3ms
    |
    270ms
  • 208.86.71.2

    United Telephone Company

    AS40237

    Eagleville

    35.7417, -86.6497

    100% uptime

    137ms
    |
    5ms
    |
    89ms
  • 67.14.194.62

    SOUTH ARKANSAS TELEPHONE COMPANY

    AS6528

    East Camden

    33.6079, -92.7402

    100% uptime

    126ms
    |
    1ms
    |
    112ms
  • 66.44.211.18

    Ellijay Telephone Company

    AS25853

    East Ellijay

    34.6840, -84.4727

    100% uptime

    108ms
    |
    3ms
    |
    31ms
  • 104.226.192.122

    Frontier Communications of America, Inc.

    AS5650

    East Hartford

    41.7823, -72.6120

    100% uptime

    102ms
    |
    4ms
    |
    114ms
  • 64.121.22.125

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    100% uptime

    106ms
    |
    2ms
    |
    169ms
  • 64.121.155.48

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    98% uptime

    106ms
    |
    4ms
    |
    159ms
  • 64.121.167.63

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    100% uptime

    107ms
    |
    1ms
    |
    233ms
  • 69.2.191.52

    Easton Utilities Commission

    AS21981

    Easton

    38.7743, -76.0763

    100% uptime

    92ms
    |
    3ms
    |
    109ms
  • 146.115.236.100

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    99% uptime

    109ms
    |
    2ms
    |
    173ms
  • 216.164.182.75

    RCN

    AS6079

    Easton

    40.6884, -75.2207

    98% uptime

    111ms
    |
    2ms
    |
    216ms
  • 69.121.65.160

    Cablevision Systems Corp.

    AS6128

    East Patchogue

    40.7670, -72.9962

    98% uptime

    96ms
    |
    2ms
    |
    140ms
  • 73.100.219.234

    Comcast Cable Communications, LLC

    AS7922

    Edgartown

    41.3890, -70.5134

    98% uptime

    125ms
    |
    2ms
    |
    217ms
  • 73.100.230.122

    Comcast Cable Communications, LLC

    AS7922

    Edgartown

    41.3890, -70.5134

    96% uptime

    121ms
    |
    2ms
    |
    264ms
  • 170.249.156.202

    Uniti Fiber Holdings Inc.

    AS13760

    Edgewater

    28.9889, -80.9023

    100% uptime

    125ms
    |
    9ms
    |
    116ms
  • 64.90.154.136

    Plateau Telecommunications Incorporated

    AS21782

    Edgewood

    35.0614, -106.1914

    100% uptime

    128ms
    |
    1ms
    |
    184ms
  • 104.152.4.209

    Cogent Communications, LLC

    AS174

    Edgewood

    38.9206, -88.6614

    98% uptime

    128ms
    |
    3ms
    |
    278ms
  • 204.111.176.25

    Shenandoah Cable Television LLC

    AS4922

    Edinburg

    38.8210, -78.5658

    99% uptime

    129ms
    |
    3ms
    |
    124ms
  • 12.157.8.105

    AT&T Enterprises, LLC

    AS7018

    El Centro

    32.7920, -115.5631

    100% uptime

    175ms
    |
    4ms
    |
    140ms
  • 73.39.196.52

    Comcast Cable Communications, LLC

    AS7922

    Eldersburg

    39.4037, -76.9503

    100% uptime

    119ms
    |
    3ms
    |
    189ms
  • 75.91.148.90

    Windstream Communications LLC

    AS7029

    El Dorado

    33.2076, -92.6663

    99% uptime

    129ms
    |
    4ms
    |
    195ms
  • 12.186.203.203

    AT&T Enterprises, LLC

    AS7018

    Elgin

    42.0376, -88.3186

    100% uptime

    118ms
    |
    0ms
    |
    65ms
  • 174.99.142.90

    Charter Communications Inc

    AS11426

    Elizabeth City

    36.2946, -76.2511

    100% uptime

    120ms
    |
    8ms
    |
    53ms
  • 68.53.118.22

    Comcast Cable Communications, LLC

    AS7922

    Elizabethtown

    37.6940, -85.8591

    98% uptime

    135ms
    |
    2ms
    |
    131ms
  • 98.36.197.134

    Comcast Cable Communications, LLC

    AS7922

    Elk Grove

    38.4088, -121.3716

    96% uptime

    182ms
    |
    3ms
    |
    330ms
  • 12.79.189.62

    AT&T Enterprises, LLC

    AS7018

    Elk Grove Village

    42.0039, -87.9703

    99% uptime

    116ms
    |
    5ms
    |
    157ms
  • 45.63.64.176

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    3ms
    |
    86ms
  • 45.63.66.44

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    3ms
    |
    88ms
  • 45.63.66.54

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    4ms
    |
    84ms
  • 45.63.68.107

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    1ms
    |
    228ms
  • 45.63.69.117

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    4ms
    |
    84ms
  • 45.63.69.119

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    96% uptime

    112ms
    |
    0ms
    |
    86ms
  • 45.63.70.9

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    99% uptime

    112ms
    |
    1ms
    |
    85ms
  • 45.63.77.150

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    1ms
    |
    108ms
  • 45.76.22.175

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    99% uptime

    112ms
    |
    1ms
    |
    88ms
  • 45.76.31.95

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0076, -87.9931

    100% uptime

    112ms
    |
    0ms
    |
    85ms
  • 66.42.114.149

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    96% uptime

    112ms
    |
    0ms
    |
    84ms
  • 66.42.115.103

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    4ms
    |
    85ms
  • 66.42.124.75

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    2ms
    |
    52ms
  • 66.225.231.155

    DEFT.COM

    AS23352

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    100ms
    |
    3ms
    |
    82ms
  • 104.207.143.229

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    4ms
    |
    86ms
  • 104.238.165.53

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    0ms
    |
    86ms
  • 107.172.32.66

    HostPapa

    AS36352

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    100ms
    |
    3ms
    |
    244ms
  • 107.191.48.110

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    4ms
    |
    84ms
  • 107.191.48.231

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    4ms
    |
    83ms
  • 107.191.49.169

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    99% uptime

    112ms
    |
    2ms
    |
    88ms
  • 107.191.50.151

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    4ms
    |
    85ms
  • 108.61.242.75

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    98% uptime

    112ms
    |
    4ms
    |
    85ms
  • 137.220.56.35

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    3ms
    |
    122ms