DNS Servers

United States of America 4305 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

  • 24.229.116.115

    PenTeleData Inc.

    AS3737

    Fountain Hill

    40.6015, -75.3952

    100% uptime

    96ms
    |
    3ms
    |
    140ms
  • 24.229.242.27

    PenTeleData Inc.

    AS3737

    Fountain Hill

    40.6015, -75.3952

    100% uptime

    96ms
    |
    1ms
    |
    185ms
  • 70.15.27.176

    PenTeleData Inc.

    AS3737

    Fountain Hill

    40.6015, -75.3952

    99% uptime

    98ms
    |
    3ms
    |
    150ms
  • 70.15.37.40

    PenTeleData Inc.

    AS3737

    Fountain Hill

    40.6015, -75.3952

    98% uptime

    98ms
    |
    2ms
    |
    151ms
  • 50.173.121.186

    Comcast Cable Communications, LLC

    AS7922

    Fox Chase

    40.3956, -75.9622

    100% uptime

    127ms
    |
    6ms
    |
    125ms
  • 135.129.146.114

    All West Communications, Inc.

    AS13614

    Francis

    40.6105, -111.2807

    99% uptime

    133ms
    |
    3ms
    |
    76ms
  • 207.135.225.37

    All West Communications, Inc.

    AS13614

    Francis

    40.6105, -111.2807

    98% uptime

    133ms
    |
    3ms
    |
    148ms
  • 207.135.229.98

    All West Communications, Inc.

    AS13614

    Francis

    40.6105, -111.2807

    98% uptime

    132ms
    |
    6ms
    |
    126ms
  • 23.185.192.66

    Swayzee Telephone Company, Inc.

    AS53989

    Frankfort

    40.2795, -86.5108

    98% uptime

    114ms
    |
    6ms
    |
    168ms
  • 12.0.173.220

    AT&T Enterprises, LLC

    AS7018

    Franklin

    42.8886, -88.0384

    98% uptime

    116ms
    |
    3ms
    |
    250ms
  • 107.9.205.81

    Charter Communications Inc

    AS10796

    Franklin

    39.5590, -84.3041

    100% uptime

    131ms
    |
    10ms
    |
    176ms
  • 107.10.155.15

    Charter Communications Inc

    AS10796

    Franklin

    39.5590, -84.3041

    100% uptime

    131ms
    |
    7ms
    |
    94ms
  • 71.172.102.2

    Verizon Business

    AS701

    Franklin Park

    40.4390, -74.5352

    100% uptime

    107ms
    |
    2ms
    |
    102ms
  • 12.71.169.106

    AT&T Enterprises, LLC

    AS7018

    Franklinton

    30.8473, -90.1553

    100% uptime

    136ms
    |
    4ms
    |
    196ms
  • 173.205.202.33

    Swayzee Telephone Company, Inc.

    AS53989

    Frankton

    40.2228, -85.7789

    98% uptime

    118ms
    |
    2ms
    |
    125ms
  • 173.205.202.65

    Swayzee Telephone Company, Inc.

    AS53989

    Frankton

    40.2228, -85.7789

    98% uptime

    116ms
    |
    5ms
    |
    166ms
  • 50.147.17.218

    Comcast Cable Communications, LLC

    AS7922

    Fredericksburg

    38.3032, -77.4605

    100% uptime

    110ms
    |
    4ms
    |
    224ms
  • 72.73.28.70

    Verizon Business

    AS701

    Fredericksburg

    38.3032, -77.4605

    98% uptime

    113ms
    |
    1ms
    |
    154ms
  • 104.246.40.44

    Cablevision Systems Corp.

    AS6128

    Freeport

    40.6576, -73.5832

    100% uptime

    101ms
    |
    1ms
    |
    170ms
  • 23.92.25.16

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    98% uptime

    164ms
    |
    3ms
    |
    70ms
  • 45.33.39.81

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    100% uptime

    159ms
    |
    1ms
    |
    23ms
  • 45.33.48.169

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    100% uptime

    161ms
    |
    120ms
    |
    174ms
  • 65.19.191.86

    Hurricane Electric LLC

    AS6939

    Fremont

    37.5483, -121.9886

    96% uptime

    149ms
    |
    9ms
    |
    210ms
  • 65.49.60.166

    ServerOptima

    AS401742

    Fremont

    37.5483, -121.9886

    100% uptime

    141ms
    |
    7ms
    |
    94ms
  • 76.103.231.32

    Comcast Cable Communications, LLC

    AS7922

    Fremont

    37.5483, -121.9886

    98% uptime

    176ms
    |
    2ms
    |
    389ms
  • 104.250.239.127

    System In Place

    AS398493

    Fremont

    37.5483, -121.9886

    100% uptime

    141ms
    |
    0ms
    |
    163ms
  • 170.178.141.36

    Tekify Broadband

    AS46886

    Fremont

    37.5483, -121.9886

    100% uptime

    142ms
    |
    1ms
    |
    114ms
  • 173.230.144.144

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    100% uptime

    157ms
    |
    2ms
    |
    143ms
  • 173.230.156.181

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    100% uptime

    156ms
    |
    2ms
    |
    182ms
  • 173.255.220.181

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    99% uptime

    159ms
    |
    1ms
    |
    190ms
  • 173.255.250.6

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    100% uptime

    157ms
    |
    2ms
    |
    176ms
  • 192.81.130.34

    Akamai Connected Cloud

    AS63949

    Fremont

    37.5483, -121.9886

    100% uptime

    163ms
    |
    3ms
    |
    184ms
  • 204.197.163.110

    System In Place

    AS398493

    Fremont

    37.5483, -121.9886

    100% uptime

    141ms
    |
    7ms
    |
    152ms
  • 67.182.107.142

    Comcast Cable Communications, LLC

    AS7922

    Fresno

    36.7477, -119.7724

    98% uptime

    177ms
    |
    52ms
    |
    330ms
  • 67.182.110.181

    Comcast Cable Communications, LLC

    AS7922

    Fresno

    36.7477, -119.7724

    100% uptime

    177ms
    |
    4ms
    |
    308ms
  • 73.66.7.186

    Comcast Cable Communications, LLC

    AS7922

    Fresno

    36.7477, -119.7724

    98% uptime

    185ms
    |
    6ms
    |
    321ms
  • 73.90.86.98

    Comcast Cable Communications, LLC

    AS7922

    Fresno

    36.7477, -119.7724

    100% uptime

    176ms
    |
    5ms
    |
    160ms
  • 209.64.0.110

    AT&T Enterprises, LLC

    AS7018

    Frisco

    33.1507, -96.8236

    98% uptime

    143ms
    |
    3ms
    |
    194ms
  • 208.98.144.4

    Farmers Mutual Telephone Company

    AS30530

    Fruitland

    44.0077, -116.9166

    100% uptime

    170ms
    |
    3ms
    |
    178ms
  • 64.66.248.107

    Tombigbee Fiber LLC

    AS15171

    Fulton

    34.2740, -88.4092

    98% uptime

    143ms
    |
    3ms
    |
    56ms
  • 174.109.160.65

    Charter Communications Inc

    AS11426

    Fuquay-Varina

    35.5843, -78.8000

    100% uptime

    132ms
    |
    20ms
    |
    180ms
  • 68.62.119.229

    Comcast Cable Communications, LLC

    AS7922

    Gadsden

    34.0143, -86.0064

    99% uptime

    145ms
    |
    2ms
    |
    87ms
  • 50.149.104.134

    Comcast Cable Communications, LLC

    AS7922

    Gages Lake

    42.3517, -87.9826

    100% uptime

    116ms
    |
    2ms
    |
    176ms
  • 12.3.187.181

    AT&T Enterprises, LLC

    AS7018

    Gainesville

    34.2979, -83.8241

    98% uptime

    122ms
    |
    1ms
    |
    82ms
  • 24.136.56.108

    Cox Communications Inc.

    AS22773

    Gainesville

    29.6516, -82.3248

    96% uptime

    136ms
    |
    2ms
    |
    80ms
  • 24.136.57.77

    Cox Communications Inc.

    AS22773

    Gainesville

    29.6516, -82.3248

    98% uptime

    136ms
    |
    2ms
    |
    79ms
  • 50.195.64.29

    Comcast Cable Communications, LLC

    AS7922

    Gainesville

    38.7957, -77.6139

    96% uptime

    121ms
    |
    2ms
    |
    224ms
  • 68.101.77.26

    Cox Communications Inc.

    AS22773

    Gainesville

    29.6516, -82.3248

    98% uptime

    134ms
    |
    2ms
    |
    80ms
  • 68.105.161.202

    Cox Communications Inc.

    AS22773

    Gainesville

    29.6516, -82.3248

    100% uptime

    125ms
    |
    2ms
    |
    176ms
  • 70.171.57.31

    Cox Communications Inc.

    AS22773

    Gainesville

    29.6516, -82.3248

    98% uptime

    134ms
    |
    2ms
    |
    86ms
  • 70.171.57.119

    Cox Communications Inc.

    AS22773

    Gainesville

    29.6516, -82.3248

    100% uptime

    134ms
    |
    2ms
    |
    61ms
  • 205.164.100.102

    Nova Cablevision, Inc.

    AS399002

    Galesburg

    40.9478, -90.3712

    100% uptime

    128ms
    |
    2ms
    |
    146ms
  • 208.95.224.58

    Stratus Networks

    AS40948

    Galesburg

    40.9478, -90.3712

    96% uptime

    115ms
    |
    3ms
    |
    103ms
  • 100.16.215.6

    Verizon Business

    AS701

    Galesville

    38.8432, -76.5436

    100% uptime

    103ms
    |
    9ms
    |
    113ms
  • 45.51.3.114

    Charter Communications Inc

    AS20001

    Garden Grove

    33.7739, -117.9415

    100% uptime

    176ms
    |
    10ms
    |
    41ms
  • 134.22.145.84

    Clearwave Communications

    AS11448

    Gardner

    38.8108, -94.9272

    99% uptime

    119ms
    |
    1ms
    |
    117ms
  • 66.214.209.60

    Charter Communications LLC

    AS20115

    Gardnerville Ranchos

    38.8882, -119.7413

    100% uptime

    186ms
    |
    2ms
    |
    291ms
  • 207.235.148.157

    Zayo Bandwidth

    AS6461

    Garland

    32.9185, -96.6775

    100% uptime

    125ms
    |
    3ms
    |
    74ms
  • 207.235.148.159

    Zayo Bandwidth

    AS6461

    Garland

    32.9185, -96.6775

    100% uptime

    125ms
    |
    3ms
    |
    72ms
  • 207.235.148.210

    Zayo Bandwidth

    AS6461

    Garland

    32.9185, -96.6775

    100% uptime

    125ms
    |
    3ms
    |
    120ms
  • 35.131.205.4

    Charter Communications LLC

    AS20115

    Gaylord

    45.0275, -84.6748

    98% uptime

    130ms
    |
    7ms
    |
    282ms
  • 47.221.60.133

    Optimum

    AS19108

    Georgetown

    30.6327, -97.6772

    100% uptime

    149ms
    |
    3ms
    |
    272ms
  • 47.221.61.133

    Optimum

    AS19108

    Georgetown

    30.6327, -97.6772

    100% uptime

    148ms
    |
    3ms
    |
    225ms
  • 50.30.84.48

    VTX Communications LLC

    AS17293

    George West

    28.3325, -98.1175

    100% uptime

    151ms
    |
    0ms
    |
    225ms
  • 69.160.46.67

    SECURED SERVERS LLC

    AS20454

    Gilbert

    33.3054, -111.7408

    98% uptime

    147ms
    |
    1ms
    |
    242ms
  • 64.184.236.174

    Visionary Communications LLC

    AS10835

    Gillette

    44.2911, -105.5022

    99% uptime

    137ms
    |
    11ms
    |
    196ms
  • 174.45.0.209

    Charter Communications LLC

    AS33588

    Gillette

    43.9282, -105.5492

    100% uptime

    186ms
    |
    5ms
    |
    102ms
  • 184.164.102.100

    Visionary Communications LLC

    AS10835

    Gillette

    44.2911, -105.5022

    96% uptime

    133ms
    |
    3ms
    |
    191ms
  • 199.180.93.244

    Visionary Communications LLC

    AS10835

    Gillette

    44.2911, -105.5022

    100% uptime

    124ms
    |
    1ms
    |
    152ms
  • 67.216.99.254

    ETEX COMMUNICATIONS, LLC

    AS23158

    Gilmer

    32.7287, -94.9424

    98% uptime

    135ms
    |
    4ms
    |
    68ms
  • 216.139.0.100

    SOUTH VALLEY INTERNET

    AS4307

    Gilroy

    37.0058, -121.5683

    99% uptime

    141ms
    |
    21ms
    |
    193ms
  • 65.110.32.43

    Air Link Rural Broadband, LLC

    AS62948

    Glasgow

    39.2272, -92.8466

    98% uptime

    116ms
    |
    3ms
    |
    149ms
  • 47.165.104.221

    Frontier Communications of America, Inc.

    AS5650

    Glastonbury

    41.7123, -72.6081

    96% uptime

    110ms
    |
    2ms
    |
    286ms
  • 173.243.165.74

    FirstLight Networks, LLC

    AS13536

    Glens Falls

    43.3095, -73.6440

    100% uptime

    95ms
    |
    1ms
    |
    147ms
  • 206.204.253.22

    Race Tech, LLC

    AS30041

    Golden Hills

    35.1425, -118.4904

    96% uptime

    156ms
    |
    3ms
    |
    28ms
  • 68.232.58.62

    S & T COMMUNICATIONS LLC

    AS30027

    Goodland

    39.3508, -101.7102

    98% uptime

    137ms
    |
    4ms
    |
    244ms
  • 68.232.58.211

    S & T COMMUNICATIONS LLC

    AS30027

    Goodland

    39.3508, -101.7102

    100% uptime

    139ms
    |
    3ms
    |
    246ms
  • 107.189.53.141

    City of Westfield (Gas & Electric Light Department)

    AS393856

    Goshen

    42.4404, -72.7995

    98% uptime

    101ms
    |
    3ms
    |
    86ms
  • 35.130.14.18

    Charter Communications LLC

    AS20115

    Grand Island

    40.9250, -98.3420

    98% uptime

    154ms
    |
    8ms
    |
    266ms
  • 23.118.201.42

    AT&T Enterprises, LLC

    AS7018

    Grand Rapids

    42.9634, -85.6681

    99% uptime

    120ms
    |
    2ms
    |
    76ms
  • 155.110.169.20

    Spartan Stores Inc.

    AS33372

    Grand Rapids

    42.9634, -85.6681

    99% uptime

    122ms
    |
    5ms
    |
    110ms
  • 24.153.155.226

    Charter Communications Inc

    AS11427

    Grapevine

    32.9343, -97.0781

    99% uptime

    137ms
    |
    2ms
    |
    59ms
  • 47.190.132.32

    Frontier Communications of America, Inc.

    AS5650

    Grapevine

    32.9343, -97.0781

    100% uptime

    141ms
    |
    2ms
    |
    190ms
  • 12.55.39.122

    AT&T Enterprises, LLC

    AS7018

    Gray

    29.6977, -90.7865

    98% uptime

    137ms
    |
    7ms
    |
    212ms
  • 173.190.106.255

    Windstream Communications LLC

    AS7029

    Grayson

    38.3326, -82.9485

    100% uptime

    131ms
    |
    6ms
    |
    176ms
  • 104.224.60.10

    Konceptio Data Services LLC

    AS31998

    Great Falls

    47.5002, -111.3008

    100% uptime

    126ms
    |
    5ms
    |
    196ms
  • 104.224.60.12

    Konceptio Data Services LLC

    AS31998

    Great Falls

    47.5002, -111.3008

    99% uptime

    127ms
    |
    7ms
    |
    200ms
  • 208.70.14.90

    Konceptio Data Services LLC

    AS31998

    Great Falls

    47.5002, -111.3008

    100% uptime

    128ms
    |
    5ms
    |
    201ms
  • 208.70.15.15

    Konceptio Data Services LLC

    AS31998

    Great Falls

    47.5002, -111.3008

    98% uptime

    137ms
    |
    5ms
    |
    233ms
  • 50.170.15.66

    Comcast Cable Communications, LLC

    AS7922

    Greenfield

    42.5876, -72.5995

    100% uptime

    110ms
    |
    2ms
    |
    139ms
  • 172.103.79.193

    GCET

    AS395922

    Greenfield

    42.5876, -72.5995

    100% uptime

    103ms
    |
    2ms
    |
    126ms
  • 47.212.117.27

    Optimum

    AS19108

    Greenville

    35.6127, -77.3663

    98% uptime

    129ms
    |
    114ms
    |
    284ms
  • 74.121.224.11

    CYBERSHARKS.NET

    AS26921

    Greenville

    35.5866, -77.3485

    98% uptime

    121ms
    |
    2ms
    |
    151ms
  • 128.92.79.10

    Charter Communications LLC

    AS20115

    Greenville

    34.8526, -82.3940

    100% uptime

    117ms
    |
    6ms
    |
    94ms
  • 64.234.107.231

    NORTHLAND CABLE TELEVISION INC.

    AS40285

    Greenwood

    34.1954, -82.1618

    96% uptime

    132ms
    |
    3ms
    |
    238ms
  • 66.54.106.131

    Mobile Communications, LLC

    AS398229

    Greenwood

    33.5162, -90.1795

    100% uptime

    113ms
    |
    8ms
    |
    173ms
  • 66.54.106.135

    Mobile Communications, LLC

    AS398229

    Greenwood

    33.5162, -90.1795

    98% uptime

    115ms
    |
    6ms
    |
    200ms
  • 134.231.79.101

    Allo Communications LLC

    AS15108

    Gretna

    41.1408, -96.2397

    100% uptime

    121ms
    |
    1ms
    |
    199ms
  • 209.196.173.37

    Breezeline

    AS11776

    Groton

    41.3501, -72.0784

    98% uptime

    97ms
    |
    3ms
    |
    295ms
  • 170.76.160.242

    BOLT Fiber Optic Services

    AS393467

    Grove

    36.5937, -94.7691

    98% uptime

    133ms
    |
    10ms
    |
    49ms