DNS Servers

United States of America 5521 local DNS servers

Download list

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

  • 162.191.69.118

    T-Mobile USA, Inc.

    AS21928

    Chicago

    41.8500, -87.6500

    98% uptime

    218ms
    |
    51ms
    |
    240ms
  • 162.191.88.142

    T-Mobile USA, Inc.

    AS21928

    Chicago

    41.8500, -87.6500

    100% uptime

    259ms
    |
    53ms
    |
    404ms
  • 162.191.101.41

    T-Mobile USA, Inc.

    AS21928

    Chicago

    41.8500, -87.6500

    97% uptime

    192ms
    |
    78ms
    |
    284ms
  • 162.191.125.93

    T-Mobile USA, Inc.

    AS21928

    Chicago

    41.8500, -87.6500

    100% uptime

    191ms
    |
    61ms
    |
    279ms
  • 162.191.177.215

    T-Mobile USA, Inc.

    AS21928

    Chicago

    41.8500, -87.6500

    100% uptime

    258ms
    |
    68ms
    |
    276ms
  • 162.212.152.33

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    104ms
    |
    7ms
    |
    229ms
  • 162.212.152.112

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    110ms
    |
    34ms
    |
    222ms
  • 162.212.152.165

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    108ms
    |
    4ms
    |
    220ms
  • 162.212.153.129

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    107ms
    |
    3ms
    |
    26ms
  • 162.212.153.174

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    97% uptime

    105ms
    |
    6ms
    |
    213ms
  • 162.212.154.236

    tzulo, inc.

    AS11878

    Chicago

    41.8798, -87.6285

    100% uptime

    108ms
    |
    0ms
    |
    197ms
  • 162.212.154.241

    tzulo, inc.

    AS11878

    Chicago

    41.8798, -87.6285

    100% uptime

    107ms
    |
    0ms
    |
    239ms
  • 162.212.155.114

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    106ms
    |
    4ms
    |
    219ms
  • 162.212.155.141

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    110ms
    |
    0ms
    |
    238ms
  • 162.212.157.33

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    105ms
    |
    2ms
    |
    234ms
  • 162.212.157.200

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    98% uptime

    105ms
    |
    2ms
    |
    229ms
  • 162.212.157.220

    tzulo, inc.

    AS11878

    Chicago

    41.8500, -87.6500

    100% uptime

    108ms
    |
    0ms
    |
    180ms
  • 162.212.158.72

    tzulo, inc.

    AS11878

    Chicago

    41.8798, -87.6285

    98% uptime

    106ms
    |
    4ms
    |
    220ms
  • 162.250.11.68

    OFFSITE, LLC

    AS32625

    Chicago

    41.8500, -87.6500

    100% uptime

    114ms
    |
    7ms
    |
    78ms
  • 163.192.205.193

    Oracle Corporation

    AS31898

    Chicago

    41.8500, -87.6500

    100% uptime

    110ms
    |
    2ms
    |
    11ms
  • 168.73.124.127

    T-Mobile USA, Inc.

    AS21928

    Chicago

    41.8500, -87.6500

    100% uptime

    212ms
    |
    83ms
    |
    361ms
  • 169.150.236.50

    Datacamp Limited

    AS60068

    Chicago

    41.8500, -87.6500

    100% uptime

    109ms
    |
    2ms
    |
    108ms
  • 172.233.214.162

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    107ms
    |
    2ms
    |
    157ms
  • 172.234.20.149

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    108ms
    |
    1ms
    |
    94ms
  • 172.234.25.16

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    108ms
    |
    2ms
    |
    129ms
  • 172.234.30.133

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    108ms
    |
    1ms
    |
    220ms
  • 172.234.192.88

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    107ms
    |
    2ms
    |
    130ms
  • 172.234.221.250

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    110ms
    |
    0ms
    |
    14ms
  • 172.236.118.118

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    108ms
    |
    2ms
    |
    91ms
  • 172.236.126.61

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    107ms
    |
    2ms
    |
    207ms
  • 172.237.148.71

    Akamai Connected Cloud

    AS63949

    Chicago

    41.8500, -87.6500

    100% uptime

    110ms
    |
    0ms
    |
    30ms
  • 174.141.215.244

    T-Mobile USA, Inc.

    AS21928

    Chicago

    41.8500, -87.6500

    100% uptime

    162ms
    |
    44ms
    |
    173ms
  • 181.215.89.126

    Hivelocity LLC

    AS61317

    Chicago

    41.8500, -87.6500

    100% uptime

    112ms
    |
    2ms
    |
    157ms
  • 190.102.110.194

    HIVELOCITY, Inc.

    AS29802

    Chicago

    41.8500, -87.6500

    100% uptime

    113ms
    |
    2ms
    |
    117ms
  • 191.96.43.254

    Hivelocity LLC

    AS61317

    Chicago

    41.8500, -87.6500

    98% uptime

    115ms
    |
    2ms
    |
    155ms
  • 204.44.100.3

    HostPapa

    AS36352

    Chicago

    41.8500, -87.6500

    100% uptime

    100ms
    |
    0ms
    |
    211ms
  • 205.178.112.98

    RCN

    AS6079

    Chicago

    41.8500, -87.6500

    97% uptime

    126ms
    |
    3ms
    |
    180ms
  • 207.121.6.84

    Level 3 Parent, LLC

    AS3356

    Chicago

    41.8500, -87.6500

    100% uptime

    115ms
    |
    2ms
    |
    91ms
  • 207.121.59.148

    Level 3 Parent, LLC

    AS3356

    Chicago

    41.8500, -87.6500

    100% uptime

    112ms
    |
    7ms
    |
    89ms
  • 207.211.188.53

    Oracle Corporation

    AS31898

    Chicago

    41.8500, -87.6500

    100% uptime

    111ms
    |
    2ms
    |
    92ms
  • 207.237.221.229

    RCN

    AS6079

    Chicago

    41.8500, -87.6500

    100% uptime

    122ms
    |
    2ms
    |
    202ms
  • 208.100.30.194

    HIVELOCITY, Inc.

    AS29802

    Chicago

    41.8500, -87.6500

    100% uptime

    112ms
    |
    2ms
    |
    166ms
  • 208.100.42.158

    HIVELOCITY, Inc.

    AS29802

    Chicago

    41.8500, -87.6500

    100% uptime

    114ms
    |
    2ms
    |
    162ms
  • 208.122.18.71

    X99

    AS398991

    Chicago

    41.8500, -87.6500

    100% uptime

    100ms
    |
    3ms
    |
    212ms
  • 216.80.74.212

    RCN

    AS6079

    Chicago

    41.8500, -87.6500

    98% uptime

    123ms
    |
    3ms
    |
    169ms
  • 216.80.108.234

    RCN

    AS6079

    Chicago

    41.8500, -87.6500

    98% uptime

    127ms
    |
    2ms
    |
    180ms
  • 204.14.139.101

    UTILITY TELEPHONE, INC.

    AS23308

    Chico

    39.7285, -121.8375

    100% uptime

    171ms
    |
    3ms
    |
    150ms
  • 147.136.230.134

    Holyoke Gas & Electric Department

    AS19323

    Chicopee

    42.1487, -72.6079

    100% uptime

    101ms
    |
    0ms
    |
    38ms
  • 74.62.29.166

    Charter Communications Inc

    AS20001

    Chino

    34.0122, -117.6889

    100% uptime

    176ms
    |
    3ms
    |
    254ms
  • 32.141.40.202

    AT&T Enterprises, LLC

    AS7018

    Cicero

    41.8456, -87.7539

    100% uptime

    115ms
    |
    2ms
    |
    171ms
  • 70.133.242.36

    AT&T Enterprises, LLC

    AS7018

    Cicero

    41.8456, -87.7539

    100% uptime

    116ms
    |
    7ms
    |
    17ms
  • 104.52.126.1

    AT&T Enterprises, LLC

    AS7018

    Cicero

    41.8456, -87.7539

    100% uptime

    118ms
    |
    0ms
    |
    70ms
  • 4.43.212.30

    Level 3 Parent, LLC

    AS3356

    Cincinnati

    39.1271, -84.5144

    100% uptime

    123ms
    |
    0ms
    |
    180ms
  • 64.154.101.134

    Level 3 Parent, LLC

    AS3356

    Cincinnati

    39.1271, -84.5144

    92% uptime

    134ms
    |
    1ms
    |
    158ms
  • 70.36.36.231

    Zimcom Network Solutions Inc.

    AS30059

    Cincinnati

    39.1271, -84.5144

    100% uptime

    114ms
    |
    1ms
    |
    21ms
  • 74.134.25.215

    Charter Communications Inc

    AS10796

    Cincinnati

    39.1271, -84.5144

    100% uptime

    128ms
    |
    3ms
    |
    98ms
  • 96.11.132.210

    Charter Communications Inc

    AS10796

    Cincinnati

    39.1271, -84.5144

    100% uptime

    128ms
    |
    1ms
    |
    109ms
  • 173.195.83.44

    Iron Mountain Data Center

    AS12025

    Cincinnati

    39.1271, -84.5144

    100% uptime

    121ms
    |
    4ms
    |
    393ms
  • 12.108.241.196

    AT&T Enterprises, LLC

    AS7018

    Cinnaminson

    39.9968, -74.9927

    100% uptime

    93ms
    |
    8ms
    |
    39ms
  • 12.154.250.19

    AT&T Enterprises, LLC

    AS7018

    Cisco

    32.3882, -98.9792

    98% uptime

    128ms
    |
    0ms
    |
    174ms
  • 47.206.210.72

    Frontier Communications of America, Inc.

    AS5650

    Citrus Ridge

    28.3339, -81.6423

    100% uptime

    138ms
    |
    1ms
    |
    76ms
  • 151.213.216.29

    Windstream Communications LLC

    AS7029

    Clarkesville

    34.6126, -83.5249

    98% uptime

    123ms
    |
    3ms
    |
    192ms
  • 180.181.51.20

    CABLE ONE, INC.

    AS11492

    Clarksdale

    34.2001, -90.5709

    98% uptime

    153ms
    |
    2ms
    |
    116ms
  • 69.166.183.70

    CLARKSVILLE DEPARTMENT OF ELECTRICITY

    AS40749

    Clarksville

    36.5298, -87.3594

    100% uptime

    111ms
    |
    3ms
    |
    125ms
  • 98.123.220.214

    Charter Communications Inc

    AS10796

    Clarksville

    39.4014, -83.9813

    100% uptime

    122ms
    |
    6ms
    |
    169ms
  • 208.88.172.221

    CLARKSVILLE DEPARTMENT OF ELECTRICITY

    AS40749

    Clarksville

    36.5298, -87.3594

    100% uptime

    112ms
    |
    2ms
    |
    28ms
  • 71.217.74.62

    Brightspeed

    AS19901

    Clayton

    35.6507, -78.4564

    100% uptime

    114ms
    |
    1ms
    |
    214ms
  • 47.206.225.115

    Frontier Communications of America, Inc.

    AS5650

    Clearwater

    27.9658, -82.8001

    98% uptime

    133ms
    |
    1ms
    |
    78ms
  • 24.31.15.129

    NORTHLAND CABLE TELEVISION INC.

    AS40285

    Clemson

    34.6834, -82.8374

    100% uptime

    133ms
    |
    2ms
    |
    190ms
  • 12.20.203.2

    AT&T Enterprises, LLC

    AS7018

    Cleveland

    30.3413, -95.0855

    98% uptime

    131ms
    |
    15ms
    |
    182ms
  • 12.20.203.253

    AT&T Enterprises, LLC

    AS7018

    Cleveland

    30.3413, -95.0855

    83% uptime

    135ms
    |
    35ms
    |
    228ms
  • 12.202.84.231

    AT&T Enterprises, LLC

    AS7018

    Cleveland

    41.4995, -81.6954

    83% uptime

    112ms
    |
    0ms
    |
    256ms
  • 38.191.171.109

    Western Reserve Communications, LLC

    AS399541

    Cleveland

    41.4995, -81.6954

    100% uptime

    93ms
    |
    0ms
    |
    106ms
  • 72.172.4.147

    Windstream Communications LLC

    AS7029

    Cleveland

    34.5970, -83.7632

    100% uptime

    125ms
    |
    3ms
    |
    200ms
  • 98.123.150.219

    Charter Communications Inc

    AS10796

    Cleveland

    41.4995, -81.6954

    100% uptime

    123ms
    |
    3ms
    |
    88ms
  • 173.186.99.178

    Windstream Communications LLC

    AS7029

    Cleveland

    34.5970, -83.7632

    100% uptime

    123ms
    |
    4ms
    |
    191ms
  • 174.126.216.170

    CABLE ONE, INC.

    AS11492

    Cleveland

    33.7440, -90.7248

    100% uptime

    154ms
    |
    3ms
    |
    278ms
  • 174.131.70.74

    Windstream Communications LLC

    AS7029

    Cleveland

    41.4995, -81.6954

    100% uptime

    101ms
    |
    0ms
    |
    153ms
  • 180.181.111.244

    CABLE ONE, INC.

    AS11492

    Cleveland

    33.7440, -90.7248

    100% uptime

    156ms
    |
    6ms
    |
    107ms
  • 208.88.44.6

    NetX Internet, LLC.

    AS53451

    Cleveland

    41.4995, -81.6954

    100% uptime

    93ms
    |
    0ms
    |
    148ms
  • 184.75.20.90

    Charter Communications Inc

    AS12271

    Cliffside Park

    40.8215, -73.9876

    100% uptime

    95ms
    |
    0ms
    |
    142ms
  • 45.55.33.64

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    3ms
    |
    107ms
  • 45.55.68.52

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    98% uptime

    85ms
    |
    3ms
    |
    129ms
  • 45.55.73.76

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    3ms
    |
    106ms
  • 45.55.90.46

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    97% uptime

    85ms
    |
    3ms
    |
    48ms
  • 45.55.223.166

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    4ms
    |
    28ms
  • 45.55.237.82

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    86ms
    |
    3ms
    |
    45ms
  • 104.131.82.154

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    3ms
    |
    46ms
  • 104.131.173.103

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    91ms
    |
    1ms
    |
    115ms
  • 104.236.3.74

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    98% uptime

    85ms
    |
    7ms
    |
    47ms
  • 104.236.5.201

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    91ms
    |
    0ms
    |
    95ms
  • 104.236.27.27

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    92ms
    |
    1ms
    |
    23ms
  • 104.236.64.20

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    92ms
    |
    3ms
    |
    69ms
  • 104.236.96.186

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    98% uptime

    85ms
    |
    6ms
    |
    48ms
  • 129.212.149.141

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    93ms
    |
    0ms
    |
    40ms
  • 134.209.172.200

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    3ms
    |
    47ms
  • 138.197.7.120

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    4ms
    |
    45ms
  • 138.197.76.71

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    3ms
    |
    47ms
  • 138.197.98.125

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    85ms
    |
    4ms
    |
    53ms
  • 138.197.104.41

    DigitalOcean, LLC

    AS14061

    Clifton

    40.8584, -74.1638

    100% uptime

    92ms
    |
    0ms
    |
    40ms