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

  • 24.103.189.158

    Charter Communications Inc

    AS11351

    Troy

    42.7284, -73.6918

    100% uptime

    103ms
    |
    1ms
    |
    181ms
  • 46.110.5.22

    Metronet

    AS30600

    Troy

    40.0395, -84.2033

    96% uptime

    115ms
    |
    1ms
    |
    224ms
  • 50.231.234.5

    Comcast Cable Communications, LLC

    AS7922

    Troy

    42.6056, -83.1499

    96% uptime

    119ms
    |
    3ms
    |
    269ms
  • 69.14.26.42

    WideOpenWest Finance LLC

    AS12083

    Troy

    42.6056, -83.1499

    100% uptime

    122ms
    |
    2ms
    |
    222ms
  • 107.4.103.232

    Comcast Cable Communications, LLC

    AS7922

    Troy

    42.6056, -83.1499

    100% uptime

    121ms
    |
    3ms
    |
    204ms
  • 139.177.4.98

    Troy Cablevision, Inc.

    AS13825

    Troy

    31.8088, -85.9699

    96% uptime

    121ms
    |
    3ms
    |
    30ms
  • 24.32.29.226

    Optimum

    AS19108

    Truckee

    39.3280, -120.1833

    98% uptime

    175ms
    |
    2ms
    |
    239ms
  • 75.111.82.184

    Optimum

    AS19108

    Truckee

    39.3280, -120.1833

    98% uptime

    183ms
    |
    2ms
    |
    244ms
  • 64.246.239.21

    Ontario Telephone Company Inc

    AS395685

    Trumansburg

    42.5423, -76.6661

    96% uptime

    100ms
    |
    1ms
    |
    128ms
  • 12.31.66.226

    AT&T Enterprises, LLC

    AS7018

    Tuckahoe

    37.5902, -77.5564

    100% uptime

    113ms
    |
    34ms
    |
    57ms
  • 12.31.66.227

    AT&T Enterprises, LLC

    AS7018

    Tuckahoe

    37.5902, -77.5564

    100% uptime

    109ms
    |
    3ms
    |
    58ms
  • 12.31.66.228

    AT&T Enterprises, LLC

    AS7018

    Tuckahoe

    37.5902, -77.5564

    100% uptime

    112ms
    |
    1ms
    |
    62ms
  • 45.24.186.204

    AT&T Enterprises, LLC

    AS7018

    Tucker

    33.8546, -84.2171

    100% uptime

    124ms
    |
    4ms
    |
    157ms
  • 69.218.210.147

    AT&T Enterprises, LLC

    AS7018

    Tucker

    33.8546, -84.2171

    100% uptime

    120ms
    |
    2ms
    |
    88ms
  • 107.133.226.65

    AT&T Enterprises, LLC

    AS7018

    Tucker

    33.8546, -84.2171

    100% uptime

    114ms
    |
    1ms
    |
    141ms
  • 162.230.157.161

    AT&T Enterprises, LLC

    AS7018

    Tucker

    33.8546, -84.2171

    98% uptime

    123ms
    |
    1ms
    |
    148ms
  • 140.252.51.10

    Arizona Board of Regents

    AS62600

    Tucson

    32.1422, -111.0506

    99% uptime

    165ms
    |
    7ms
    |
    225ms
  • 38.72.152.74

    Cogent Communications, LLC

    AS174

    Tukwila

    47.4740, -122.2610

    100% uptime

    282ms
    |
    4ms
    |
    189ms
  • 69.84.254.202

    Accel Net, Inc.

    AS18647

    Tukwila

    47.4740, -122.2610

    96% uptime

    146ms
    |
    1ms
    |
    204ms
  • 172.232.168.44

    Akamai Connected Cloud

    AS63949

    Tukwila

    47.4740, -122.2610

    98% uptime

    150ms
    |
    5ms
    |
    188ms
  • 4.4.21.235

    Level 3 Parent, LLC

    AS3356

    Tulsa

    36.1540, -95.9928

    100% uptime

    131ms
    |
    8ms
    |
    153ms
  • 72.222.83.228

    Cox Communications Inc.

    AS22773

    Tulsa

    36.1540, -95.9928

    100% uptime

    137ms
    |
    4ms
    |
    258ms
  • 98.184.86.36

    Cox Communications Inc.

    AS22773

    Tulsa

    36.1540, -95.9928

    100% uptime

    126ms
    |
    0ms
    |
    199ms
  • 216.201.164.66

    Logix

    AS25956

    Tulsa

    36.1093, -95.8506

    100% uptime

    144ms
    |
    2ms
    |
    175ms
  • 24.152.247.65

    PenTeleData Inc.

    AS3737

    Tunkhannock

    41.5387, -75.9466

    98% uptime

    108ms
    |
    2ms
    |
    187ms
  • 24.246.243.71

    PenTeleData Inc.

    AS3737

    Tunkhannock

    41.5387, -75.9466

    100% uptime

    107ms
    |
    4ms
    |
    183ms
  • 69.247.178.39

    Comcast Cable Communications, LLC

    AS7922

    Tupelo

    34.2581, -88.7046

    100% uptime

    151ms
    |
    6ms
    |
    298ms
  • 68.63.97.235

    Comcast Cable Communications, LLC

    AS7922

    Tuscaloosa

    33.2098, -87.5692

    100% uptime

    141ms
    |
    2ms
    |
    252ms
  • 209.113.136.92

    Metro Communications Company, Inc.

    AS53610

    Tuscola

    39.7992, -88.2831

    98% uptime

    122ms
    |
    4ms
    |
    145ms
  • 142.202.76.8

    Mojavewifi.com LLC

    AS46292

    Twentynine Palms

    34.1356, -116.0542

    99% uptime

    172ms
    |
    11ms
    |
    206ms
  • 142.202.76.12

    Mojavewifi.com LLC

    AS46292

    Twentynine Palms

    34.1356, -116.0542

    100% uptime

    171ms
    |
    7ms
    |
    207ms
  • 142.202.79.2

    Mojavewifi.com LLC

    AS46292

    Twentynine Palms

    34.1356, -116.0542

    100% uptime

    170ms
    |
    4ms
    |
    208ms
  • 66.164.59.235

    CABLE ONE, INC.

    AS11492

    Twin Falls

    42.5630, -114.4609

    99% uptime

    181ms
    |
    5ms
    |
    116ms
  • 96.18.107.31

    CABLE ONE, INC.

    AS11492

    Twin Falls

    42.5630, -114.4609

    100% uptime

    203ms
    |
    7ms
    |
    102ms
  • 96.18.127.129

    CABLE ONE, INC.

    AS11492

    Twin Falls

    42.5630, -114.4609

    100% uptime

    181ms
    |
    5ms
    |
    148ms
  • 12.12.7.169

    AT&T Enterprises, LLC

    AS7018

    Tyler

    32.3513, -95.3011

    100% uptime

    140ms
    |
    3ms
    |
    139ms
  • 63.65.199.137

    Verizon Business

    AS701

    Tysons

    38.9530, -77.2295

    100% uptime

    106ms
    |
    2ms
    |
    147ms
  • 207.90.217.103

    Smart Way Communications, LLC

    AS13795

    Uhrichsville

    40.3931, -81.3465

    100% uptime

    144ms
    |
    14ms
    |
    346ms
  • 199.201.93.13

    WindWave Communications

    AS36222

    Umatilla

    45.9173, -119.3425

    100% uptime

    144ms
    |
    0ms
    |
    82ms
  • 66.179.63.98

    Douglas FastNet

    AS13692

    Umpqua

    43.3654, -123.4684

    100% uptime

    148ms
    |
    2ms
    |
    184ms
  • 12.13.135.26

    AT&T Enterprises, LLC

    AS7018

    Union

    30.0871, -90.9048

    99% uptime

    133ms
    |
    3ms
    |
    110ms
  • 104.193.40.46

    Vitalink LLC

    AS396317

    Uniontown

    39.9001, -79.7164

    98% uptime

    104ms
    |
    2ms
    |
    142ms
  • 104.193.40.48

    Vitalink LLC

    AS396317

    Uniontown

    39.9001, -79.7164

    100% uptime

    103ms
    |
    8ms
    |
    137ms
  • 72.19.180.54

    JAB Wireless, INC.

    AS17306

    Upper Bear Creek

    39.6238, -105.4178

    100% uptime

    134ms
    |
    2ms
    |
    312ms
  • 73.132.200.49

    Comcast Cable Communications, LLC

    AS7922

    Urbana

    39.3259, -77.3514

    100% uptime

    118ms
    |
    4ms
    |
    102ms
  • 96.74.70.109

    Comcast Cable Communications, LLC

    AS7922

    Vacaville

    38.3566, -121.9877

    100% uptime

    176ms
    |
    6ms
    |
    289ms
  • 8.30.180.85

    Cherryland Services Inc

    AS13904

    Valle Vista

    35.4109, -113.8627

    99% uptime

    167ms
    |
    36ms
    |
    189ms
  • 8.30.183.244

    Cherryland Services Inc

    AS13904

    Valle Vista

    35.4109, -113.8627

    98% uptime

    173ms
    |
    25ms
    |
    191ms
  • 63.246.227.222

    Texas CellNet, Inc.

    AS46452

    Van

    32.5249, -95.6372

    100% uptime

    119ms
    |
    4ms
    |
    165ms
  • 63.246.237.21

    Texas CellNet, Inc.

    AS46452

    Van

    32.5249, -95.6372

    98% uptime

    118ms
    |
    7ms
    |
    166ms
  • 67.131.100.251

    CenturyLink Communications, LLC

    AS209

    Vancouver

    45.6387, -122.6615

    100% uptime

    168ms
    |
    4ms
    |
    258ms
  • 209.180.173.207

    CenturyLink Communications, LLC

    AS209

    Vancouver

    45.6387, -122.6615

    100% uptime

    182ms
    |
    16ms
    |
    287ms
  • 199.47.188.126

    STRATA NETWORKS

    AS30432

    Vernal

    40.4555, -109.5288

    100% uptime

    126ms
    |
    5ms
    |
    71ms
  • 96.75.80.225

    Comcast Cable Communications, LLC

    AS7922

    Vero Beach

    27.6386, -80.3973

    100% uptime

    146ms
    |
    2ms
    |
    328ms
  • 206.41.235.195

    Internet Doorway, Inc.

    AS4574

    Vicksburg

    32.3526, -90.8779

    98% uptime

    131ms
    |
    4ms
    |
    229ms
  • 47.210.142.252

    Optimum

    AS19108

    Victoria

    28.8053, -97.0036

    96% uptime

    152ms
    |
    3ms
    |
    252ms
  • 74.192.73.126

    Optimum

    AS19108

    Victoria

    28.8053, -97.0036

    98% uptime

    155ms
    |
    3ms
    |
    398ms
  • 96.2.122.247

    Midcontinent Communications

    AS11232

    Victoria

    44.8586, -93.6616

    96% uptime

    126ms
    |
    3ms
    |
    290ms
  • 73.57.232.43

    Comcast Cable Communications, LLC

    AS7922

    Villages of Oriole

    26.4623, -80.1528

    99% uptime

    141ms
    |
    14ms
    |
    154ms
  • 167.142.190.107

    Aureon Network Services

    AS5056

    Villisca

    40.9297, -94.9761

    98% uptime

    111ms
    |
    4ms
    |
    171ms
  • 217.177.149.238

    CABLE ONE, INC.

    AS11492

    Vincennes

    38.6773, -87.5286

    100% uptime

    137ms
    |
    11ms
    |
    58ms
  • 69.248.139.166

    Comcast Cable Communications, LLC

    AS7922

    Vineland

    39.4862, -75.0257

    100% uptime

    111ms
    |
    2ms
    |
    30ms
  • 130.44.60.21

    Summit Broadband

    AS23314

    Vineyards

    26.2237, -81.7280

    98% uptime

    120ms
    |
    2ms
    |
    108ms
  • 173.231.65.10

    In the Stix Broadband LLC

    AS396226

    Vintondale

    40.4815, -78.9186

    98% uptime

    104ms
    |
    3ms
    |
    241ms
  • 173.81.254.85

    Optimum

    AS19108

    Virgie

    37.3351, -82.5796

    96% uptime

    120ms
    |
    3ms
    |
    214ms
  • 47.253.62.38

    Alibaba (US) Technology Co., Ltd.

    AS45102

    Virginia Beach

    36.8529, -75.9780

    100% uptime

    101ms
    |
    7ms
    |
    42ms
  • 24.186.51.173

    Cablevision Systems Corp.

    AS6128

    Vista Center

    40.1593, -74.3179

    96% uptime

    94ms
    |
    1ms
    |
    125ms
  • 24.155.0.253

    Grande Communications Networks, LLC

    AS7459

    Waco

    31.5493, -97.1467

    100% uptime

    147ms
    |
    5ms
    |
    158ms
  • 70.116.186.227

    Charter Communications Inc

    AS11427

    Waco

    31.5493, -97.1467

    100% uptime

    149ms
    |
    10ms
    |
    224ms
  • 71.78.142.234

    Charter Communications Inc

    AS11427

    Waco

    31.5493, -97.1467

    100% uptime

    136ms
    |
    1ms
    |
    225ms
  • 66.33.19.4

    CityLink

    AS47046

    Wadsworth

    41.0256, -81.7298

    98% uptime

    95ms
    |
    8ms
    |
    156ms
  • 167.100.14.181

    Hanson Communications, Inc.

    AS397608

    Wagner

    43.0797, -98.2931

    100% uptime

    126ms
    |
    3ms
    |
    156ms
  • 45.37.199.161

    Charter Communications Inc

    AS11426

    Wake Forest

    35.9799, -78.5097

    99% uptime

    126ms
    |
    11ms
    |
    53ms
  • 104.145.255.116

    CARR COMMUNICATIONS, INC.

    AS23254

    Walkerville

    43.7145, -86.1245

    100% uptime

    113ms
    |
    4ms
    |
    171ms
  • 154.3.129.30

    Charles River Operation

    AS64249

    Waltham

    42.3765, -71.2356

    100% uptime

    96ms
    |
    0ms
    |
    128ms
  • 154.39.2.90

    Charles River Operation

    AS64249

    Waltham

    42.3765, -71.2356

    100% uptime

    96ms
    |
    0ms
    |
    150ms
  • 64.146.163.197

    Northwest Open Access Network

    AS16713

    Wapato

    46.4476, -120.4203

    99% uptime

    146ms
    |
    2ms
    |
    50ms
  • 68.84.168.88

    Comcast Cable Communications, LLC

    AS7922

    Warren

    42.4904, -83.0130

    98% uptime

    126ms
    |
    3ms
    |
    211ms
  • 104.234.50.170

    OVH SAS

    AS16276

    Warrenton

    38.7135, -77.7953

    100% uptime

    91ms
    |
    9ms
    |
    126ms
  • 98.226.160.193

    Comcast Cable Communications, LLC

    AS7922

    Warsaw

    41.2381, -85.8530

    98% uptime

    128ms
    |
    2ms
    |
    226ms
  • 74.103.216.147

    Verizon Business

    AS701

    Warwick

    41.7001, -71.4162

    100% uptime

    110ms
    |
    1ms
    |
    60ms
  • 96.253.60.133

    Verizon Business

    AS701

    Warwick

    41.7001, -71.4162

    98% uptime

    106ms
    |
    3ms
    |
    63ms
  • 4.156.204.176

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    99% uptime

    93ms
    |
    2ms
    |
    127ms
  • 15.204.192.231

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    98% uptime

    90ms
    |
    1ms
    |
    109ms
  • 15.204.209.89

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    1ms
    |
    20ms
  • 15.204.226.28

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    1ms
    |
    120ms
  • 15.204.226.93

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    120ms
  • 15.204.228.131

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    99% uptime

    91ms
    |
    1ms
    |
    20ms
  • 20.85.230.145

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    94ms
    |
    2ms
    |
    125ms
  • 20.231.99.82

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    95ms
    |
    2ms
    |
    126ms
  • 20.231.193.95

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    99% uptime

    94ms
    |
    2ms
    |
    91ms
  • 20.231.224.22

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    95ms
    |
    2ms
    |
    89ms
  • 35.199.38.166

    Google LLC

    AS396982

    Washington

    38.8951, -77.0364

    98% uptime

    90ms
    |
    1ms
    |
    104ms
  • 38.54.7.69

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    2ms
    |
    15ms
  • 38.54.7.71

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    17ms
  • 38.54.7.73

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    18ms
  • 38.54.7.74

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    14ms
  • 38.54.7.75

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    2ms
    |
    16ms
  • 38.54.7.76

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    17ms
  • 38.54.7.77

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    2ms
    |
    16ms