DNS Servers

United States of America 4304 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

  • 207.200.184.26

    Green Cloud Technologies,LLC

    AS54155

    Houston

    29.7633, -95.3633

    100% uptime

    130ms
    |
    2ms
    |
    152ms
  • 216.230.233.99

    The Optimal Link Corporation

    AS40156

    Houston

    29.7633, -95.3633

    100% uptime

    126ms
    |
    9ms
    |
    99ms
  • 142.54.72.82

    Cablevision Systems Corp.

    AS6128

    Huntington

    40.8681, -73.4257

    99% uptime

    101ms
    |
    1ms
    |
    97ms
  • 76.80.172.173

    Charter Communications Inc

    AS20001

    Huntington Beach

    33.6603, -117.9992

    96% uptime

    168ms
    |
    2ms
    |
    130ms
  • 12.94.237.126

    AT&T Enterprises, LLC

    AS7018

    Huntsville

    34.7304, -86.5859

    99% uptime

    126ms
    |
    3ms
    |
    201ms
  • 12.220.212.233

    AT&T Enterprises, LLC

    AS7018

    Huntsville

    34.7304, -86.5859

    96% uptime

    132ms
    |
    2ms
    |
    188ms
  • 24.236.120.197

    WideOpenWest Finance LLC

    AS12083

    Huntsville

    34.7304, -86.5859

    96% uptime

    129ms
    |
    3ms
    |
    210ms
  • 136.53.164.234

    Google Fiber Inc.

    AS16591

    Huntsville

    34.7304, -86.5859

    100% uptime

    116ms
    |
    2ms
    |
    96ms
  • 153.66.86.222

    Space Exploration Technologies Corporation

    AS14593

    Huntsville

    34.7304, -86.5859

    96% uptime

    136ms
    |
    7ms
    |
    100ms
  • 38.124.153.109

    Cogent Communications, LLC

    AS174

    Hunt Valley

    39.4998, -76.6411

    100% uptime

    122ms
    |
    52ms
    |
    135ms
  • 64.83.186.138

    TDS TELECOM

    AS4181

    Hurricane

    37.1753, -113.2900

    100% uptime

    167ms
    |
    3ms
    |
    223ms
  • 63.215.102.195

    IdeaTek Telcom, LLC

    AS27425

    Hutchinson

    38.0608, -97.9298

    98% uptime

    130ms
    |
    8ms
    |
    318ms
  • 24.116.193.221

    CABLE ONE, INC.

    AS11492

    Idaho Falls

    43.4666, -112.0341

    99% uptime

    194ms
    |
    6ms
    |
    131ms
  • 159.118.13.11

    CABLE ONE, INC.

    AS11492

    Idaho Falls

    43.4666, -112.0341

    98% uptime

    194ms
    |
    6ms
    |
    321ms
  • 199.19.117.28

    Silver Star Communications

    AS26223

    Idaho Falls

    43.4666, -112.0341

    100% uptime

    139ms
    |
    3ms
    |
    62ms
  • 76.53.184.91

    Charter Communications Inc

    AS20001

    Imperial

    32.8475, -115.5694

    100% uptime

    183ms
    |
    3ms
    |
    272ms
  • 12.40.39.4

    AT&T Enterprises, LLC

    AS7018

    Independence

    39.0911, -94.4155

    98% uptime

    152ms
    |
    3ms
    |
    167ms
  • 12.40.39.5

    AT&T Enterprises, LLC

    AS7018

    Independence

    39.0911, -94.4155

    100% uptime

    153ms
    |
    3ms
    |
    174ms
  • 12.40.39.8

    AT&T Enterprises, LLC

    AS7018

    Independence

    39.0911, -94.4155

    99% uptime

    152ms
    |
    2ms
    |
    173ms
  • 12.40.39.11

    AT&T Enterprises, LLC

    AS7018

    Independence

    39.0911, -94.4155

    99% uptime

    155ms
    |
    4ms
    |
    174ms
  • 12.40.39.12

    AT&T Enterprises, LLC

    AS7018

    Independence

    39.0911, -94.4155

    98% uptime

    151ms
    |
    3ms
    |
    174ms
  • 159.118.212.248

    CABLE ONE, INC.

    AS11492

    Independence

    37.2242, -95.7083

    98% uptime

    156ms
    |
    3ms
    |
    84ms
  • 209.153.110.48

    KC Web, Inc.

    AS13654

    Independence

    39.0911, -94.4155

    99% uptime

    110ms
    |
    0ms
    |
    171ms
  • 38.86.82.101

    Smithville Digital, LLC

    AS11550

    Indianapolis

    39.7684, -86.1580

    100% uptime

    118ms
    |
    2ms
    |
    164ms
  • 50.238.174.106

    Comcast Cable Communications, LLC

    AS7922

    Indianapolis

    39.7684, -86.1580

    100% uptime

    130ms
    |
    6ms
    |
    28ms
  • 63.134.156.83

    Joink, LLC

    AS32709

    Indianapolis

    39.9416, -86.1157

    100% uptime

    108ms
    |
    1ms
    |
    163ms
  • 68.50.84.85

    Comcast Cable Communications, LLC

    AS7922

    Indianapolis

    39.7684, -86.1580

    98% uptime

    135ms
    |
    2ms
    |
    239ms
  • 68.54.122.190

    Comcast Cable Communications, LLC

    AS7922

    Indianapolis

    39.7684, -86.1580

    100% uptime

    134ms
    |
    3ms
    |
    173ms
  • 68.58.50.194

    Comcast Cable Communications, LLC

    AS7922

    Indianapolis

    39.7684, -86.1580

    96% uptime

    132ms
    |
    3ms
    |
    228ms
  • 69.36.3.18

    Xiber

    AS393950

    Indianapolis

    39.7684, -86.1580

    100% uptime

    111ms
    |
    2ms
    |
    252ms
  • 75.15.5.73

    AT&T Enterprises, LLC

    AS7018

    Indianapolis

    39.7684, -86.1580

    100% uptime

    126ms
    |
    2ms
    |
    86ms
  • 168.92.102.26

    Joink, LLC

    AS32709

    Indianapolis

    39.9416, -86.1157

    100% uptime

    109ms
    |
    1ms
    |
    190ms
  • 168.92.119.130

    Joink, LLC

    AS32709

    Indianapolis

    39.9416, -86.1157

    100% uptime

    109ms
    |
    1ms
    |
    194ms
  • 172.98.129.145

    Xiber

    AS393950

    Indianapolis

    39.7684, -86.1580

    96% uptime

    112ms
    |
    3ms
    |
    270ms
  • 172.98.130.174

    Xiber

    AS393950

    Indianapolis

    39.7684, -86.1580

    96% uptime

    110ms
    |
    2ms
    |
    247ms
  • 172.98.143.171

    Xiber

    AS393950

    Indianapolis

    39.7684, -86.1580

    96% uptime

    110ms
    |
    3ms
    |
    240ms
  • 172.98.143.177

    Xiber

    AS393950

    Indianapolis

    39.7684, -86.1580

    100% uptime

    110ms
    |
    3ms
    |
    84ms
  • 173.195.83.44

    Iron Mountain Data Center

    AS12025

    Indianapolis

    39.7684, -86.1580

    98% uptime

    124ms
    |
    13ms
    |
    411ms
  • 209.209.44.4

    J2 Technology LLC

    AS399332

    Indianapolis

    39.7684, -86.1580

    100% uptime

    105ms
    |
    3ms
    |
    116ms
  • 68.77.244.164

    AT&T Enterprises, LLC

    AS7018

    Irvine

    33.6695, -117.8231

    98% uptime

    170ms
    |
    3ms
    |
    220ms
  • 68.77.244.170

    AT&T Enterprises, LLC

    AS7018

    Irvine

    33.6695, -117.8231

    96% uptime

    168ms
    |
    6ms
    |
    220ms
  • 99.47.5.65

    AT&T Enterprises, LLC

    AS7018

    Irvine

    33.6695, -117.8231

    100% uptime

    165ms
    |
    5ms
    |
    77ms
  • 104.3.22.230

    AT&T Enterprises, LLC

    AS7018

    Irvine

    33.6695, -117.8231

    96% uptime

    170ms
    |
    7ms
    |
    219ms
  • 108.71.255.217

    AT&T Enterprises, LLC

    AS7018

    Irvine

    33.6695, -117.8231

    100% uptime

    166ms
    |
    6ms
    |
    219ms
  • 47.190.106.84

    Frontier Communications of America, Inc.

    AS5650

    Irving

    32.8140, -96.9489

    100% uptime

    143ms
    |
    4ms
    |
    12ms
  • 63.96.245.224

    Verizon Business

    AS701

    Irving

    32.8140, -96.9489

    100% uptime

    141ms
    |
    2ms
    |
    160ms
  • 97.77.70.148

    Charter Communications Inc

    AS11427

    Irving

    32.8140, -96.9489

    100% uptime

    143ms
    |
    8ms
    |
    192ms
  • 97.99.1.72

    Charter Communications Inc

    AS11427

    Irving

    32.8140, -96.9489

    99% uptime

    138ms
    |
    1ms
    |
    179ms
  • 47.19.61.156

    Cablevision Lightpath LLC

    AS54004

    Islip

    40.7298, -73.2104

    98% uptime

    93ms
    |
    0ms
    |
    147ms
  • 24.213.214.46

    Charter Communications Inc

    AS11351

    Ithaca

    42.4406, -76.4966

    96% uptime

    121ms
    |
    4ms
    |
    105ms
  • 173.45.187.91

    Haefele Connect

    AS26269

    Ithaca

    42.4406, -76.4966

    99% uptime

    111ms
    |
    13ms
    |
    149ms
  • 192.55.226.18

    Pound Bang Incorporated

    AS23086

    Ithaca

    42.4406, -76.4966

    100% uptime

    110ms
    |
    3ms
    |
    189ms
  • 69.167.211.195

    JACKSON ENERGY AUTHORITY

    AS53435

    Jackson

    35.6145, -88.8140

    100% uptime

    116ms
    |
    1ms
    |
    32ms
  • 70.234.227.41

    AT&T Enterprises, LLC

    AS7018

    Jackson

    32.2988, -90.1848

    98% uptime

    150ms
    |
    3ms
    |
    31ms
  • 173.235.51.23

    C Spire Fiber

    AS11272

    Jackson

    32.2988, -90.1848

    98% uptime

    113ms
    |
    2ms
    |
    158ms
  • 173.235.105.212

    C Spire Fiber

    AS11272

    Jackson

    32.2988, -90.1848

    98% uptime

    115ms
    |
    3ms
    |
    186ms
  • 12.109.141.227

    AT&T Enterprises, LLC

    AS7018

    Jacksonville

    30.3322, -81.6556

    98% uptime

    137ms
    |
    10ms
    |
    297ms
  • 12.148.168.72

    AT&T Enterprises, LLC

    AS7018

    Jacksonville

    30.3322, -81.6556

    100% uptime

    136ms
    |
    1ms
    |
    105ms
  • 40.143.76.16

    TierPoint, LLC

    AS17378

    Jacksonville

    30.3322, -81.6556

    100% uptime

    146ms
    |
    4ms
    |
    94ms
  • 45.27.151.141

    AT&T Enterprises, LLC

    AS7018

    Jacksonville

    30.3322, -81.6556

    98% uptime

    143ms
    |
    1ms
    |
    284ms
  • 71.199.229.253

    Comcast Cable Communications, LLC

    AS7922

    Jacksonville

    30.3322, -81.6556

    98% uptime

    135ms
    |
    7ms
    |
    241ms
  • 73.171.182.178

    Comcast Cable Communications, LLC

    AS7922

    Jacksonville

    30.3322, -81.6556

    100% uptime

    140ms
    |
    3ms
    |
    279ms
  • 76.18.201.17

    Comcast Cable Communications, LLC

    AS7922

    Jacksonville

    30.3322, -81.6556

    98% uptime

    138ms
    |
    2ms
    |
    250ms
  • 142.190.123.222

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    99% uptime

    123ms
    |
    6ms
    |
    123ms
  • 170.249.156.195

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    100% uptime

    123ms
    |
    11ms
    |
    109ms
  • 170.249.156.197

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    100% uptime

    123ms
    |
    7ms
    |
    90ms
  • 170.249.156.198

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3704, -81.5864

    100% uptime

    125ms
    |
    10ms
    |
    90ms
  • 170.249.156.200

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    100% uptime

    123ms
    |
    6ms
    |
    76ms
  • 170.249.156.201

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3704, -81.5864

    100% uptime

    125ms
    |
    2ms
    |
    86ms
  • 170.249.156.203

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3704, -81.5864

    100% uptime

    125ms
    |
    9ms
    |
    102ms
  • 170.249.156.204

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    100% uptime

    125ms
    |
    3ms
    |
    116ms
  • 170.249.156.205

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3704, -81.5864

    100% uptime

    125ms
    |
    8ms
    |
    118ms
  • 170.249.156.206

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    99% uptime

    125ms
    |
    8ms
    |
    89ms
  • 170.249.156.207

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    100% uptime

    123ms
    |
    5ms
    |
    101ms
  • 170.249.156.208

    Uniti Fiber Holdings Inc.

    AS13760

    Jacksonville

    30.3322, -81.6556

    100% uptime

    123ms
    |
    11ms
    |
    94ms
  • 162.17.232.97

    Comcast Cable Communications, LLC

    AS7922

    Jamesburg

    40.3526, -74.4402

    100% uptime

    113ms
    |
    3ms
    |
    132ms
  • 12.162.127.75

    AT&T Enterprises, LLC

    AS7018

    Jasper

    30.9202, -93.9966

    100% uptime

    152ms
    |
    3ms
    |
    60ms
  • 66.44.219.187

    Ellijay Telephone Company

    AS25853

    Jasper

    34.4679, -84.4291

    100% uptime

    108ms
    |
    1ms
    |
    114ms
  • 66.244.76.129

    Smithville Digital, LLC

    AS11550

    Jasper

    38.3914, -86.9311

    98% uptime

    118ms
    |
    3ms
    |
    263ms
  • 173.243.183.230

    Smithville Digital, LLC

    AS11550

    Jasper

    38.3914, -86.9311

    99% uptime

    123ms
    |
    1ms
    |
    33ms
  • 98.22.76.147

    Windstream Communications LLC

    AS7029

    Jefferson

    34.1170, -83.5724

    98% uptime

    124ms
    |
    4ms
    |
    212ms
  • 24.105.222.213

    Mid-Hudson Cablevision, Inc.

    AS32953

    Jefferson Heights

    42.2340, -73.8824

    98% uptime

    93ms
    |
    9ms
    |
    156ms
  • 64.119.81.2

    Nuvisions

    AS19689

    Jersey City

    40.7282, -74.0776

    100% uptime

    92ms
    |
    1ms
    |
    112ms
  • 96.234.26.4

    Verizon Business

    AS701

    Jersey City

    40.7282, -74.0776

    100% uptime

    101ms
    |
    2ms
    |
    40ms
  • 162.17.229.153

    Comcast Cable Communications, LLC

    AS7922

    Jersey City

    40.7282, -74.0776

    98% uptime

    110ms
    |
    4ms
    |
    214ms
  • 70.166.138.15

    Cox Communications Inc.

    AS22773

    Johnson

    36.1329, -94.1655

    100% uptime

    137ms
    |
    4ms
    |
    233ms
  • 70.182.162.98

    Cox Communications Inc.

    AS22773

    Johnson

    36.1329, -94.1655

    99% uptime

    140ms
    |
    1ms
    |
    276ms
  • 152.86.73.172

    BrightRidge

    AS22987

    Johnson City

    36.3134, -82.3535

    98% uptime

    127ms
    |
    4ms
    |
    198ms
  • 24.145.28.134

    Breezeline

    AS11776

    Johnstown

    40.3267, -78.9220

    100% uptime

    108ms
    |
    4ms
    |
    192ms
  • 73.246.236.126

    Comcast Cable Communications, LLC

    AS7922

    Joliet

    41.5252, -88.0834

    100% uptime

    127ms
    |
    3ms
    |
    194ms
  • 66.76.116.65

    Optimum

    AS19108

    Jonesboro

    35.8423, -90.7043

    98% uptime

    137ms
    |
    4ms
    |
    314ms
  • 68.170.237.238

    Ritter Communications

    AS23404

    Jonesboro

    35.8423, -90.7043

    100% uptime

    131ms
    |
    3ms
    |
    138ms
  • 69.92.229.179

    CABLE ONE, INC.

    AS11492

    Joplin

    37.0842, -94.5133

    100% uptime

    131ms
    |
    2ms
    |
    89ms
  • 96.18.168.126

    CABLE ONE, INC.

    AS11492

    Joplin

    37.0842, -94.5133

    98% uptime

    147ms
    |
    3ms
    |
    67ms
  • 23.164.160.71

    NETWAVE BROADBAND INC

    AS32114

    Jordan

    44.6669, -93.6269

    100% uptime

    121ms
    |
    8ms
    |
    32ms
  • 12.105.65.90

    AT&T Enterprises, LLC

    AS7018

    Jupiter

    26.9342, -80.0942

    98% uptime

    138ms
    |
    4ms
    |
    190ms
  • 73.1.141.177

    Comcast Cable Communications, LLC

    AS7922

    Jupiter

    26.9342, -80.0942

    100% uptime

    146ms
    |
    4ms
    |
    239ms
  • 47.188.248.112

    Frontier Communications of America, Inc.

    AS5650

    Justin

    33.0848, -97.2961

    99% uptime

    141ms
    |
    4ms
    |
    154ms
  • 71.81.107.142

    Charter Communications LLC

    AS20115

    Kalamazoo

    42.2917, -85.5872

    100% uptime

    137ms
    |
    3ms
    |
    296ms
  • 66.135.76.128

    Montana Sky Networks, Inc.

    AS18897

    Kalispell

    48.1958, -114.3129

    100% uptime

    175ms
    |
    8ms
    |
    142ms