DNS Servers

United States of America 4611 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

  • 64.61.219.42

    Fidium

    AS12042

    Bloomington

    44.8408, -93.2983

    99% uptime

    109ms
    |
    0ms
    |
    100ms
  • 65.126.86.22

    CenturyLink Communications, LLC

    AS209

    Bloomington

    44.8408, -93.2983

    100% uptime

    133ms
    |
    1ms
    |
    174ms
  • 107.152.9.149

    CIRBN, LLC

    AS62523

    Bloomington

    40.4842, -88.9937

    100% uptime

    101ms
    |
    0ms
    |
    146ms
  • 199.255.167.226

    STL OFFICE SOLUTIONS, INC.

    AS1420

    Bloomington

    40.4842, -88.9937

    100% uptime

    101ms
    |
    0ms
    |
    155ms
  • 69.163.31.74

    Bevcomm

    AS15100

    Blue Earth

    43.6375, -94.1022

    100% uptime

    111ms
    |
    3ms
    |
    42ms
  • 216.163.5.255

    Ritter Communications

    AS23404

    Blytheville

    35.9273, -89.9190

    99% uptime

    126ms
    |
    1ms
    |
    30ms
  • 44.230.204.152

    Amazon.com, Inc.

    AS16509

    Boardman

    45.8399, -119.7006

    100% uptime

    177ms
    |
    1ms
    |
    230ms
  • 54.187.149.240

    Amazon.com, Inc.

    AS16509

    Boardman

    45.8399, -119.7006

    99% uptime

    177ms
    |
    5ms
    |
    124ms
  • 50.243.228.245

    Comcast Cable Communications, LLC

    AS7922

    Boca Del Mar

    26.3451, -80.1467

    100% uptime

    151ms
    |
    2ms
    |
    72ms
  • 50.253.169.105

    Comcast Cable Communications, LLC

    AS7922

    Boca Del Mar

    26.3451, -80.1467

    100% uptime

    144ms
    |
    3ms
    |
    50ms
  • 8.28.109.51

    Hotwire Communications

    AS23089

    Boca Raton

    26.3587, -80.0831

    94% uptime

    119ms
    |
    21ms
    |
    169ms
  • 38.162.33.112

    QxC Communications, Inc.

    AS54488

    Boca Raton

    26.3587, -80.0831

    88% uptime

    144ms
    |
    11ms
    |
    244ms
  • 4.19.216.2

    Level 3 Parent, LLC

    AS3356

    Boise

    43.6135, -116.2035

    100% uptime

    152ms
    |
    0ms
    |
    209ms
  • 4.36.190.30

    Level 3 Parent, LLC

    AS3356

    Boise

    43.6135, -116.2035

    99% uptime

    152ms
    |
    10ms
    |
    206ms
  • 24.119.126.56

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    180ms
    |
    2ms
    |
    100ms
  • 24.245.186.185

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    182ms
    |
    13ms
    |
    52ms
  • 66.164.26.149

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    183ms
    |
    51ms
    |
    58ms
  • 66.164.55.211

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    183ms
    |
    3ms
    |
    88ms
  • 66.193.105.15

    Level 3 Parent, LLC

    AS3549

    Boise

    43.6135, -116.2035

    94% uptime

    153ms
    |
    0ms
    |
    28ms
  • 67.41.43.35

    CenturyLink Communications, LLC

    AS209

    Boise

    43.6135, -116.2035

    98% uptime

    163ms
    |
    13ms
    |
    241ms
  • 69.92.3.47

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    181ms
    |
    12ms
    |
    45ms
  • 69.92.4.80

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    181ms
    |
    2ms
    |
    77ms
  • 69.92.30.46

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    181ms
    |
    3ms
    |
    88ms
  • 96.5.131.83

    Zayo Bandwidth

    AS11686

    Boise

    43.6135, -116.2035

    99% uptime

    172ms
    |
    2ms
    |
    230ms
  • 96.19.2.216

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    181ms
    |
    3ms
    |
    54ms
  • 159.118.238.239

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    176ms
    |
    3ms
    |
    122ms
  • 160.2.78.158

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    178ms
    |
    1ms
    |
    48ms
  • 160.2.111.53

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    184ms
    |
    2ms
    |
    101ms
  • 160.2.116.121

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    94% uptime

    183ms
    |
    2ms
    |
    55ms
  • 160.2.119.206

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    98% uptime

    182ms
    |
    3ms
    |
    61ms
  • 160.2.159.179

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    184ms
    |
    8ms
    |
    111ms
  • 160.2.172.58

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    182ms
    |
    2ms
    |
    91ms
  • 160.3.64.84

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    100% uptime

    182ms
    |
    2ms
    |
    49ms
  • 160.3.69.51

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    182ms
    |
    3ms
    |
    108ms
  • 173.207.17.27

    CABLE ONE, INC.

    AS11492

    Boise

    43.6135, -116.2035

    99% uptime

    177ms
    |
    4ms
    |
    83ms
  • 204.8.54.106

    Syringa Networks, LLC

    AS15305

    Boise

    43.6135, -116.2035

    98% uptime

    151ms
    |
    1ms
    |
    192ms
  • 209.141.123.79

    Syringa Networks, LLC

    AS15305

    Boise

    43.6135, -116.2035

    100% uptime

    153ms
    |
    7ms
    |
    192ms
  • 50.149.57.5

    Comcast Cable Communications, LLC

    AS7922

    Bolingbrook

    41.6986, -88.0684

    100% uptime

    127ms
    |
    0ms
    |
    66ms
  • 50.171.156.214

    Comcast Cable Communications, LLC

    AS7922

    Bolingbrook

    41.6986, -88.0684

    94% uptime

    127ms
    |
    0ms
    |
    181ms
  • 50.171.156.217

    Comcast Cable Communications, LLC

    AS7922

    Bolingbrook

    41.6986, -88.0684

    99% uptime

    126ms
    |
    1ms
    |
    140ms
  • 72.24.161.163

    CABLE ONE, INC.

    AS11492

    Borger

    35.6678, -101.3974

    100% uptime

    159ms
    |
    4ms
    |
    82ms
  • 18.18.93.118

    Massachusetts Institute of Technology

    AS3

    Boston

    42.3584, -71.0598

    99% uptime

    99ms
    |
    1ms
    |
    98ms
  • 24.91.110.245

    Comcast Cable Communications, LLC

    AS7922

    Boston

    42.3584, -71.0598

    88% uptime

    120ms
    |
    3ms
    |
    210ms
  • 50.150.7.114

    Comcast Cable Communications, LLC

    AS7922

    Boston

    42.3584, -71.0598

    100% uptime

    111ms
    |
    0ms
    |
    118ms
  • 64.251.121.231

    Massachusetts Convention Center Authority

    AS32102

    Boston

    42.3584, -71.0598

    94% uptime

    96ms
    |
    1ms
    |
    141ms
  • 64.251.127.214

    Massachusetts Convention Center Authority

    AS32102

    Boston

    42.3584, -71.0598

    94% uptime

    96ms
    |
    0ms
    |
    297ms
  • 66.186.160.78

    FirstLight Fiber, Inc.

    AS21547

    Boston

    42.3584, -71.0598

    100% uptime

    102ms
    |
    11ms
    |
    123ms
  • 69.84.144.172

    FirstLight Fiber, Inc.

    AS27382

    Boston

    42.3584, -71.0598

    100% uptime

    97ms
    |
    0ms
    |
    113ms
  • 146.115.4.51

    RCN

    AS6079

    Boston

    42.3584, -71.0598

    100% uptime

    98ms
    |
    0ms
    |
    52ms
  • 206.209.230.117

    Farm Credit Financial Partners, Inc.

    AS16910

    Boston

    42.3584, -71.0598

    99% uptime

    96ms
    |
    3ms
    |
    126ms
  • 207.127.62.164

    Navisite Opco LLC

    AS14135

    Boston

    42.3584, -71.0598

    100% uptime

    100ms
    |
    1ms
    |
    101ms
  • 208.89.62.162

    AxcelX Technologies LLC

    AS33083

    Boston

    42.3584, -71.0598

    100% uptime

    103ms
    |
    1ms
    |
    51ms
  • 50.47.64.50

    Wholesail networks LLC

    AS20055

    Bothell

    47.7623, -122.2054

    98% uptime

    148ms
    |
    1ms
    |
    240ms
  • 23.173.208.234

    Ayva

    AS399200

    Boulder

    40.0150, -105.2706

    100% uptime

    138ms
    |
    2ms
    |
    49ms
  • 23.173.211.17

    Ayva

    AS399200

    Boulder

    40.0150, -105.2706

    99% uptime

    141ms
    |
    12ms
    |
    47ms
  • 64.184.236.174

    Visionary Communications LLC

    AS10835

    Boulder

    40.0150, -105.2706

    100% uptime

    136ms
    |
    1ms
    |
    192ms
  • 173.8.8.145

    Comcast Cable Communications, LLC

    AS7922

    Bowie

    38.9428, -76.7303

    100% uptime

    115ms
    |
    2ms
    |
    32ms
  • 74.143.84.90

    Charter Communications Inc

    AS10796

    Bowling Green

    41.3748, -83.6513

    94% uptime

    134ms
    |
    4ms
    |
    339ms
  • 20.141.175.26

    Microsoft Corporation

    AS8070

    Boydton

    36.6676, -78.3875

    100% uptime

    96ms
    |
    0ms
    |
    140ms
  • 172.203.16.73

    Microsoft Corporation

    AS8075

    Boydton

    36.6676, -78.3875

    100% uptime

    90ms
    |
    1ms
    |
    114ms
  • 47.206.11.31

    Frontier Communications of America, Inc.

    AS5650

    Bradenton

    27.4989, -82.5748

    100% uptime

    132ms
    |
    8ms
    |
    172ms
  • 172.83.248.253

    Terra Nova Telecom, Inc.

    AS36601

    Bradenton

    27.4989, -82.5748

    94% uptime

    129ms
    |
    0ms
    |
    195ms
  • 4.14.219.101

    Level 3 Parent, LLC

    AS3356

    Bradley Gardens

    40.5629, -74.6546

    100% uptime

    99ms
    |
    1ms
    |
    48ms
  • 172.87.15.166

    CONSOLIDATED TELEPHONE COMPANY

    AS20283

    Brainerd

    46.3580, -94.2008

    88% uptime

    120ms
    |
    0ms
    |
    252ms
  • 204.13.37.8

    REACH4 Communications

    AS27298

    Branch

    30.3488, -92.2676

    100% uptime

    171ms
    |
    2ms
    |
    317ms
  • 162.211.40.79

    Stellar Association, LLC

    AS36374

    Brandon

    45.9652, -95.5987

    98% uptime

    109ms
    |
    4ms
    |
    14ms
  • 173.216.152.18

    Optimum

    AS19108

    Branson

    36.6437, -93.2185

    100% uptime

    144ms
    |
    3ms
    |
    225ms
  • 173.216.152.188

    Optimum

    AS19108

    Branson

    36.6437, -93.2185

    100% uptime

    148ms
    |
    8ms
    |
    230ms
  • 142.129.133.198

    Charter Communications Inc

    AS20001

    Brea

    33.9167, -117.9001

    94% uptime

    180ms
    |
    2ms
    |
    266ms
  • 199.96.248.126

    TierPoint, LLC

    AS17378

    Breinigsville

    40.5368, -75.6313

    94% uptime

    90ms
    |
    0ms
    |
    127ms
  • 64.146.142.170

    Northwest Open Access Network

    AS16713

    Bremerton

    47.5673, -122.6326

    99% uptime

    138ms
    |
    0ms
    |
    72ms
  • 174.57.54.85

    Comcast Cable Communications, LLC

    AS7922

    Bridgeton

    39.4273, -75.2341

    100% uptime

    113ms
    |
    2ms
    |
    285ms
  • 208.212.93.252

    Verizon Business

    AS701

    Bridgewater

    40.6008, -74.6482

    99% uptime

    105ms
    |
    1ms
    |
    132ms
  • 69.27.87.36

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    100% uptime

    115ms
    |
    3ms
    |
    36ms
  • 69.27.87.44

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    100% uptime

    101ms
    |
    1ms
    |
    29ms
  • 69.27.87.52

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    100% uptime

    100ms
    |
    1ms
    |
    28ms
  • 69.27.87.60

    Point Broadband Fiber Holding, LLC

    AS17310

    Bristol

    36.5965, -82.1885

    100% uptime

    101ms
    |
    2ms
    |
    34ms
  • 134.195.185.86

    Hub66, Inc

    AS395510

    Bristol

    43.5912, -71.7368

    100% uptime

    82ms
    |
    0ms
    |
    66ms
  • 192.24.20.88

    Pine Telephone Company, INC.

    AS393844

    Broken Bow

    34.0293, -94.7391

    93% uptime

    129ms
    |
    0ms
    |
    92ms
  • 74.101.245.10

    Verizon Business

    AS701

    Bronxville

    40.9382, -73.8321

    100% uptime

    105ms
    |
    1ms
    |
    110ms
  • 209.6.148.108

    RCN

    AS6079

    Brookline

    42.3318, -71.1212

    98% uptime

    113ms
    |
    3ms
    |
    161ms
  • 73.88.17.250

    Comcast Cable Communications, LLC

    AS7922

    Brooklyn Park

    45.0941, -93.3563

    100% uptime

    133ms
    |
    11ms
    |
    243ms
  • 76.151.131.155

    Comcast Cable Communications, LLC

    AS7922

    Brooklyn Park

    39.2284, -76.6164

    100% uptime

    121ms
    |
    1ms
    |
    200ms
  • 23.141.136.104

    TX Fiber

    AS400767

    Brownsville

    25.9017, -97.4975

    100% uptime

    151ms
    |
    1ms
    |
    92ms
  • 23.141.136.108

    TX Fiber

    AS400767

    Brownsville

    25.9017, -97.4975

    100% uptime

    156ms
    |
    1ms
    |
    88ms
  • 71.206.40.179

    Comcast Cable Communications, LLC

    AS7922

    Brunswick

    39.3143, -77.6278

    100% uptime

    122ms
    |
    5ms
    |
    220ms
  • 173.195.163.26

    Brazos Valley Council of Governments

    AS393605

    Bryan

    30.6744, -96.3700

    100% uptime

    130ms
    |
    1ms
    |
    168ms
  • 130.250.247.146

    VELOCITY, A MANAGED SERVICES COMPANY

    AS62728

    Buda

    30.0852, -97.8403

    99% uptime

    130ms
    |
    14ms
    |
    165ms
  • 23.95.132.174

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    99% uptime

    105ms
    |
    2ms
    |
    55ms
  • 67.222.114.158

    Transwave Communications Systems, Inc.

    AS31864

    Buffalo

    42.8865, -78.8784

    100% uptime

    112ms
    |
    3ms
    |
    130ms
  • 96.243.17.174

    Verizon Business

    AS701

    Buffalo

    42.8865, -78.8784

    100% uptime

    102ms
    |
    9ms
    |
    47ms
  • 107.150.1.246

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    99% uptime

    106ms
    |
    2ms
    |
    247ms
  • 107.172.1.242

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    1ms
    |
    167ms
  • 107.172.141.109

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    106ms
    |
    0ms
    |
    56ms
  • 107.173.80.42

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    98% uptime

    105ms
    |
    1ms
    |
    177ms
  • 107.175.67.100

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    88% uptime

    105ms
    |
    0ms
    |
    95ms
  • 107.175.246.67

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    100% uptime

    105ms
    |
    0ms
    |
    56ms
  • 154.16.118.97

    WHG Hosting Services Ltd

    AS14670

    Buffalo

    42.8865, -78.8784

    100% uptime

    108ms
    |
    3ms
    |
    86ms
  • 162.0.161.201

    Greenlight Networks, LLC

    AS31775

    Buffalo

    42.8865, -78.8784

    100% uptime

    109ms
    |
    1ms
    |
    84ms
  • 172.245.127.76

    HostPapa

    AS36352

    Buffalo

    42.8865, -78.8784

    98% uptime

    105ms
    |
    3ms
    |
    67ms