DNS Servers

United States of America 4328 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

  • 24.119.88.24

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    96% uptime

    178ms
    |
    3ms
    |
    134ms
  • 24.119.126.56

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    179ms
    |
    11ms
    |
    94ms
  • 24.245.182.243

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    96% uptime

    177ms
    |
    18ms
    |
    94ms
  • 66.164.55.211

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    182ms
    |
    9ms
    |
    96ms
  • 69.92.4.80

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    178ms
    |
    3ms
    |
    96ms
  • 69.92.30.46

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    180ms
    |
    4ms
    |
    105ms
  • 72.24.90.225

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    181ms
    |
    33ms
    |
    160ms
  • 72.24.213.165

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    178ms
    |
    6ms
    |
    174ms
  • 96.19.2.216

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    178ms
    |
    9ms
    |
    87ms
  • 154.27.183.176

    Silver Star Communications

    AS26223

    Boise

    43.6135, -116.2035

    100% uptime

    155ms
    |
    0ms
    |
    88ms
  • 159.118.238.239

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    176ms
    |
    4ms
    |
    116ms
  • 160.2.78.158

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    177ms
    |
    2ms
    |
    106ms
  • 160.2.111.53

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    181ms
    |
    12ms
    |
    92ms
  • 160.2.117.132

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    177ms
    |
    3ms
    |
    102ms
  • 160.2.119.206

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    179ms
    |
    11ms
    |
    96ms
  • 160.2.159.179

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    98% uptime

    182ms
    |
    7ms
    |
    95ms
  • 160.2.172.58

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    180ms
    |
    8ms
    |
    88ms
  • 160.2.172.132

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    98% uptime

    180ms
    |
    3ms
    |
    90ms
  • 160.3.64.84

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    181ms
    |
    3ms
    |
    84ms
  • 160.3.69.51

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    180ms
    |
    10ms
    |
    107ms
  • 204.8.54.106

    Syringa Networks, LLC

    AS15305

    Boise

    43.6135, -116.2035

    100% uptime

    151ms
    |
    4ms
    |
    192ms
  • 50.149.57.5

    Comcast Cable Communications, LLC

    AS7922

    Bolingbrook

    41.6986, -88.0684

    99% uptime

    117ms
    |
    1ms
    |
    72ms
  • 50.171.156.217

    Comcast Cable Communications, LLC

    AS7922

    Bolingbrook

    41.6986, -88.0684

    100% uptime

    118ms
    |
    1ms
    |
    129ms
  • 74.85.183.67

    Summit Broadband

    AS23314

    Bonita Springs

    26.3398, -81.7787

    100% uptime

    122ms
    |
    3ms
    |
    192ms
  • 199.231.168.93

    Summit Broadband

    AS23314

    Bonita Springs

    26.3398, -81.7787

    98% uptime

    122ms
    |
    3ms
    |
    158ms
  • 73.254.184.199

    Comcast Cable Communications, LLC

    AS7922

    Bonney Lake

    47.1771, -122.1865

    98% uptime

    180ms
    |
    6ms
    |
    192ms
  • 173.219.54.74

    Optimum

    AS19108

    Bossier City

    32.5160, -93.7321

    96% uptime

    147ms
    |
    3ms
    |
    120ms
  • 18.18.93.118

    Massachusetts Institute of Technology

    AS3

    Boston

    42.3584, -71.0598

    100% uptime

    99ms
    |
    2ms
    |
    114ms
  • 24.2.200.8

    Comcast Cable Communications, LLC

    AS7922

    Boston

    42.3584, -71.0598

    96% uptime

    130ms
    |
    2ms
    |
    241ms
  • 50.237.25.142

    Comcast Cable Communications, LLC

    AS7922

    Boston

    42.3584, -71.0598

    100% uptime

    107ms
    |
    1ms
    |
    130ms
  • 66.186.160.78

    FirstLight Fiber, Inc.

    AS21547

    Boston

    42.3584, -71.0598

    99% uptime

    102ms
    |
    1ms
    |
    118ms
  • 76.19.108.175

    Comcast Cable Communications, LLC

    AS7922

    Boston

    42.3584, -71.0598

    98% uptime

    117ms
    |
    2ms
    |
    205ms
  • 76.19.155.173

    Comcast Cable Communications, LLC

    AS7922

    Boston

    42.3584, -71.0598

    98% uptime

    123ms
    |
    1ms
    |
    222ms
  • 76.127.160.180

    Comcast Cable Communications, LLC

    AS7922

    Boston

    42.3584, -71.0598

    98% uptime

    123ms
    |
    2ms
    |
    218ms
  • 146.115.4.50

    RCN

    AS6079

    Boston

    42.3584, -71.0598

    98% uptime

    98ms
    |
    1ms
    |
    53ms
  • 207.127.62.164

    Navisite Opco LLC

    AS14135

    Boston

    42.3584, -71.0598

    99% uptime

    100ms
    |
    0ms
    |
    115ms
  • 207.127.62.165

    Navisite Opco LLC

    AS14135

    Boston

    42.3584, -71.0598

    99% uptime

    97ms
    |
    1ms
    |
    117ms
  • 208.79.183.24

    VLUZNET

    AS26824

    Boston

    42.3584, -71.0598

    98% uptime

    103ms
    |
    1ms
    |
    125ms
  • 208.89.62.162

    AxcelX Technologies LLC

    AS33083

    Boston

    42.3584, -71.0598

    100% uptime

    103ms
    |
    2ms
    |
    53ms
  • 65.76.134.85

    T-Mobile USA, Inc.

    AS21928

    Bothell

    47.7623, -122.2054

    98% uptime

    183ms
    |
    11ms
    |
    269ms
  • 50.47.64.55

    Wholesail networks LLC

    AS20055

    Bothell West

    47.8053, -122.2406

    99% uptime

    148ms
    |
    4ms
    |
    236ms
  • 23.173.208.234

    Ayva

    AS399200

    Boulder

    40.0150, -105.2706

    100% uptime

    134ms
    |
    13ms
    |
    50ms
  • 23.173.211.17

    Ayva

    AS399200

    Boulder

    40.0150, -105.2706

    99% uptime

    135ms
    |
    6ms
    |
    55ms
  • 64.72.102.106

    isp.net

    AS27501

    Boulder City

    35.9786, -114.8325

    100% uptime

    161ms
    |
    5ms
    |
    183ms
  • 173.8.8.145

    Comcast Cable Communications, LLC

    AS7922

    Bowie

    38.9428, -76.7303

    100% uptime

    116ms
    |
    7ms
    |
    37ms
  • 165.166.170.104

    County of Orangeburg

    AS14480

    Bowman

    33.3488, -80.6829

    100% uptime

    126ms
    |
    3ms
    |
    76ms
  • 20.141.175.26

    Microsoft Corporation

    AS8070

    Boydton

    36.6676, -78.3875

    100% uptime

    96ms
    |
    2ms
    |
    138ms
  • 172.203.16.73

    Microsoft Corporation

    AS8075

    Boydton

    36.6676, -78.3875

    100% uptime

    90ms
    |
    2ms
    |
    100ms
  • 69.144.201.130

    Charter Communications LLC

    AS33588

    Bozeman

    45.6797, -111.0386

    100% uptime

    185ms
    |
    4ms
    |
    168ms
  • 47.206.11.31

    Frontier Communications of America, Inc.

    AS5650

    Bradenton

    27.4989, -82.5748

    100% uptime

    137ms
    |
    2ms
    |
    204ms
  • 69.131.25.186

    TDS TELECOM

    AS4181

    Bradford

    43.2701, -71.9601

    96% uptime

    104ms
    |
    8ms
    |
    154ms
  • 4.14.219.101

    Level 3 Parent, LLC

    AS3356

    Bradley Gardens

    40.5629, -74.6546

    100% uptime

    99ms
    |
    2ms
    |
    47ms
  • 205.214.164.228

    CONSOLIDATED TELEPHONE COMPANY

    AS20283

    Brainerd

    46.3580, -94.2008

    100% uptime

    122ms
    |
    3ms
    |
    256ms
  • 205.214.174.140

    CONSOLIDATED TELEPHONE COMPANY

    AS20283

    Brainerd

    46.3580, -94.2008

    96% uptime

    120ms
    |
    121ms
    |
    250ms
  • 47.206.213.57

    Frontier Communications of America, Inc.

    AS5650

    Brandon

    27.9378, -82.2859

    98% uptime

    133ms
    |
    1ms
    |
    269ms
  • 50.222.254.198

    Comcast Cable Communications, LLC

    AS7922

    Brandon

    27.9378, -82.2859

    96% uptime

    134ms
    |
    2ms
    |
    273ms
  • 174.58.24.185

    Comcast Cable Communications, LLC

    AS7922

    Brandon

    27.9378, -82.2859

    98% uptime

    143ms
    |
    4ms
    |
    280ms
  • 73.252.187.146

    Comcast Cable Communications, LLC

    AS7922

    Brentwood

    37.9319, -121.6958

    98% uptime

    174ms
    |
    2ms
    |
    304ms
  • 69.170.66.235

    JAB Wireless, INC.

    AS17306

    Briar

    32.9951, -97.5428

    100% uptime

    128ms
    |
    21ms
    |
    213ms
  • 148.76.110.219

    Cablevision Systems Corp.

    AS6128

    Bridgeport

    41.1792, -73.1894

    98% uptime

    94ms
    |
    0ms
    |
    147ms
  • 174.57.54.85

    Comcast Cable Communications, LLC

    AS7922

    Bridgeton

    39.4273, -75.2341

    99% uptime

    113ms
    |
    3ms
    |
    242ms
  • 66.171.81.144

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    96% uptime

    120ms
    |
    2ms
    |
    183ms
  • 66.171.91.185

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    100% uptime

    121ms
    |
    2ms
    |
    187ms
  • 69.27.87.44

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    99% uptime

    102ms
    |
    5ms
    |
    31ms
  • 69.27.87.52

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    100% uptime

    101ms
    |
    5ms
    |
    30ms
  • 69.27.87.60

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    100% uptime

    100ms
    |
    5ms
    |
    33ms
  • 134.195.185.86

    Hub66, Inc

    AS395510

    Bristol

    43.5912, -71.7368

    100% uptime

    82ms
    |
    4ms
    |
    59ms
  • 173.162.198.120

    Comcast Cable Communications, LLC

    AS7922

    Brockton

    42.0834, -71.0184

    100% uptime

    112ms
    |
    3ms
    |
    176ms
  • 174.169.22.199

    Comcast Cable Communications, LLC

    AS7922

    Brockton

    42.0834, -71.0184

    98% uptime

    115ms
    |
    2ms
    |
    245ms
  • 199.180.110.1

    White Cloud Communications US, LLC

    AS54142

    Bromley

    38.6406, -84.8483

    100% uptime

    130ms
    |
    1ms
    |
    196ms
  • 70.60.81.94

    Charter Communications Inc

    AS10796

    Brookfield

    43.0606, -88.1065

    100% uptime

    126ms
    |
    9ms
    |
    290ms
  • 24.118.210.117

    Comcast Cable Communications, LLC

    AS7922

    Brooklyn Park

    45.0941, -93.3563

    100% uptime

    148ms
    |
    9ms
    |
    188ms
  • 73.88.17.250

    Comcast Cable Communications, LLC

    AS7922

    Brooklyn Park

    45.0941, -93.3563

    98% uptime

    133ms
    |
    7ms
    |
    238ms
  • 76.151.131.155

    Comcast Cable Communications, LLC

    AS7922

    Brooklyn Park

    39.2284, -76.6164

    100% uptime

    119ms
    |
    4ms
    |
    194ms
  • 107.4.222.5

    Comcast Cable Communications, LLC

    AS7922

    Brooklyn Park

    45.0941, -93.3563

    98% uptime

    131ms
    |
    9ms
    |
    225ms
  • 23.141.136.101

    TX Fiber

    AS400767

    Brownsville

    25.9017, -97.4975

    100% uptime

    154ms
    |
    2ms
    |
    87ms
  • 71.206.40.179

    Comcast Cable Communications, LLC

    AS7922

    Brunswick

    39.3143, -77.6278

    99% uptime

    121ms
    |
    12ms
    |
    210ms
  • 69.5.199.154

    Brazos WiFi

    AS53423

    Bryan

    30.6744, -96.3700

    98% uptime

    136ms
    |
    3ms
    |
    181ms
  • 45.41.64.15

    MicroLogic, Inc.

    AS395209

    Buckhannon

    38.9940, -80.2320

    100% uptime

    92ms
    |
    1ms
    |
    124ms
  • 23.95.132.174

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    3ms
    |
    79ms
  • 23.182.128.1

    HashIT

    AS401933

    Buffalo

    42.8865, -78.8784

    100% uptime

    147ms
    |
    3ms
    |
    205ms
  • 50.75.6.253

    Charter Communications Inc

    AS11351

    Buffalo

    42.8865, -78.8784

    98% uptime

    131ms
    |
    2ms
    |
    52ms
  • 67.215.249.158

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    96% uptime

    105ms
    |
    2ms
    |
    120ms
  • 67.222.114.158

    Transwave Communications Systems, Inc.

    AS31864

    Buffalo

    42.8865, -78.8784

    100% uptime

    111ms
    |
    2ms
    |
    136ms
  • 69.207.41.140

    Charter Communications Inc

    AS11351

    Buffalo

    42.8865, -78.8784

    96% uptime

    117ms
    |
    2ms
    |
    126ms
  • 96.243.16.2

    Verizon Business

    AS701

    Buffalo

    42.8865, -78.8784

    96% uptime

    104ms
    |
    27ms
    |
    178ms
  • 96.243.17.174

    Verizon Business

    AS701

    Buffalo

    42.8865, -78.8784

    100% uptime

    102ms
    |
    1ms
    |
    65ms
  • 104.168.53.80

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    106ms
    |
    1ms
    |
    81ms
  • 107.172.1.242

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    98% uptime

    106ms
    |
    2ms
    |
    167ms
  • 107.172.75.161

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    106ms
    |
    1ms
    |
    76ms
  • 107.172.141.109

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    106ms
    |
    2ms
    |
    71ms
  • 107.173.51.91

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    1ms
    |
    72ms
  • 107.173.80.42

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    7ms
    |
    174ms
  • 107.175.206.161

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    106ms
    |
    1ms
    |
    170ms
  • 107.175.246.67

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    1ms
    |
    54ms
  • 154.16.118.53

    WHG Hosting Services Ltd

    AS14670

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    5ms
    |
    115ms
  • 162.0.161.201

    Greenlight Networks, LLC

    AS31775

    Buffalo

    42.8865, -78.8784

    99% uptime

    109ms
    |
    2ms
    |
    66ms
  • 169.54.65.229

    IBM Cloud

    AS36351

    Buffalo

    42.8865, -78.8784

    100% uptime

    100ms
    |
    0ms
    |
    70ms
  • 172.245.127.75

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    96% uptime

    105ms
    |
    1ms
    |
    66ms
  • 172.245.127.76

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    7ms
    |
    89ms