DNS Servers

United States of America 4316 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

  • 149.28.127.100

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    113ms
    |
    3ms
    |
    88ms
  • 198.12.108.67

    HostPapa

    AS36352

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    101ms
    |
    3ms
    |
    42ms
  • 198.12.111.13

    HostPapa

    AS36352

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    100ms
    |
    3ms
    |
    13ms
  • 198.46.218.160

    HostPapa

    AS36352

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    100ms
    |
    3ms
    |
    152ms
  • 207.148.9.9

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    99% uptime

    112ms
    |
    2ms
    |
    87ms
  • 207.148.11.30

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    99% uptime

    112ms
    |
    4ms
    |
    49ms
  • 207.148.15.34

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    0ms
    |
    163ms
  • 216.128.144.23

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    112ms
    |
    1ms
    |
    86ms
  • 216.128.144.54

    The Constant Company, LLC

    AS20473

    Elk Grove Village

    42.0039, -87.9703

    100% uptime

    113ms
    |
    1ms
    |
    86ms
  • 73.74.163.35

    Comcast Cable Communications, LLC

    AS7922

    Elkhart

    41.6820, -85.9767

    100% uptime

    127ms
    |
    3ms
    |
    212ms
  • 104.128.0.22

    Griggs County Telephone Co.

    AS31758

    Enderlin

    46.6230, -97.6015

    100% uptime

    113ms
    |
    3ms
    |
    162ms
  • 24.152.238.51

    PenTeleData Inc.

    AS3737

    Ephrata

    40.1798, -76.1788

    100% uptime

    104ms
    |
    2ms
    |
    183ms
  • 24.229.12.69

    PenTeleData Inc.

    AS3737

    Ephrata

    40.1798, -76.1788

    96% uptime

    102ms
    |
    3ms
    |
    159ms
  • 70.15.113.77

    PenTeleData Inc.

    AS3737

    Ephrata

    40.1798, -76.1788

    96% uptime

    104ms
    |
    2ms
    |
    174ms
  • 146.12.109.117

    PenTeleData Inc.

    AS3737

    Ephrata

    40.1798, -76.1788

    100% uptime

    104ms
    |
    2ms
    |
    28ms
  • 40.133.84.2

    Windstream Communications LLC

    AS7029

    Erlanger

    39.0167, -84.6008

    100% uptime

    119ms
    |
    3ms
    |
    154ms
  • 162.252.61.41

    REDI Net

    AS62754

    Española

    35.9911, -106.0806

    100% uptime

    143ms
    |
    4ms
    |
    181ms
  • 162.217.132.129

    GeoStar, LLC.

    AS22062

    Etna

    39.9573, -82.6818

    100% uptime

    119ms
    |
    6ms
    |
    160ms
  • 63.143.207.95

    Optimum Online

    AS53488

    Etowah

    35.3176, -82.5943

    98% uptime

    134ms
    |
    12ms
    |
    285ms
  • 63.47.113.213

    Verizon Business

    AS6167

    Euless

    32.8371, -97.0820

    98% uptime

    212ms
    |
    69ms
    |
    83ms
  • 166.168.223.8

    Verizon Business

    AS6167

    Euless

    32.8371, -97.0820

    96% uptime

    323ms
    |
    80ms
    |
    270ms
  • 150.221.51.226

    Charter Communications Inc

    AS11351

    Evans Mills

    44.0881, -75.8071

    100% uptime

    104ms
    |
    2ms
    |
    116ms
  • 50.43.115.205

    Wholesail networks LLC

    AS20055

    Everett

    47.9790, -122.2021

    100% uptime

    158ms
    |
    1ms
    |
    172ms
  • 76.104.213.59

    Comcast Cable Communications, LLC

    AS7922

    Everett

    47.9790, -122.2021

    100% uptime

    180ms
    |
    3ms
    |
    260ms
  • 104.237.118.82

    Eastern Iowa IP, LLC

    AS63394

    Fairbank

    42.6392, -92.0471

    98% uptime

    116ms
    |
    9ms
    |
    86ms
  • 24.237.228.76

    GENERAL COMMUNICATION, INC.

    AS8047

    Fairbanks

    64.8378, -147.7164

    99% uptime

    203ms
    |
    8ms
    |
    260ms
  • 70.164.42.104

    Cox Communications Inc.

    AS22773

    Fairfax

    38.8462, -77.3064

    100% uptime

    120ms
    |
    1ms
    |
    98ms
  • 70.184.243.66

    Cox Communications Inc.

    AS22773

    Fairfax

    38.8462, -77.3064

    98% uptime

    110ms
    |
    2ms
    |
    42ms
  • 70.184.243.69

    Cox Communications Inc.

    AS22773

    Fairfax

    38.8462, -77.3064

    96% uptime

    111ms
    |
    1ms
    |
    36ms
  • 70.184.243.75

    Cox Communications Inc.

    AS22773

    Fairfax

    38.8462, -77.3064

    98% uptime

    103ms
    |
    3ms
    |
    45ms
  • 70.184.243.77

    Cox Communications Inc.

    AS22773

    Fairfax

    38.8462, -77.3064

    96% uptime

    111ms
    |
    0ms
    |
    36ms
  • 70.184.243.78

    Cox Communications Inc.

    AS22773

    Fairfax

    38.8462, -77.3064

    98% uptime

    111ms
    |
    1ms
    |
    37ms
  • 72.202.211.11

    Cox Communications Inc.

    AS22773

    Fairfax

    38.8462, -77.3064

    96% uptime

    118ms
    |
    3ms
    |
    40ms
  • 72.45.165.2

    Charter Communications Inc

    AS11351

    Fairport

    43.0987, -77.4419

    100% uptime

    116ms
    |
    2ms
    |
    71ms
  • 23.88.173.5

    Central Utah Telephone, Inc.

    AS36103

    Fairview

    39.6264, -111.4396

    98% uptime

    139ms
    |
    6ms
    |
    198ms
  • 64.113.163.236

    CC Communications

    AS16664

    Fallon

    39.4735, -118.7774

    96% uptime

    160ms
    |
    10ms
    |
    123ms
  • 64.113.164.44

    CC Communications

    AS16664

    Fallon

    39.4735, -118.7774

    100% uptime

    160ms
    |
    6ms
    |
    170ms
  • 173.13.100.101

    Comcast Cable Communications, LLC

    AS7922

    Fall River

    41.7015, -71.1551

    100% uptime

    111ms
    |
    2ms
    |
    215ms
  • 199.119.145.233

    KwiKom Communications

    AS53703

    Fall River

    37.6078, -96.0280

    96% uptime

    124ms
    |
    2ms
    |
    23ms
  • 24.117.166.186

    CABLE ONE, INC.

    AS11492

    Fargo

    46.8772, -96.7898

    100% uptime

    132ms
    |
    3ms
    |
    57ms
  • 66.69.42.84

    Charter Communications Inc

    AS11427

    Farmers Branch

    32.9265, -96.8961

    100% uptime

    137ms
    |
    1ms
    |
    212ms
  • 71.78.65.54

    Charter Communications Inc

    AS11427

    Farmers Branch

    32.9265, -96.8961

    98% uptime

    139ms
    |
    3ms
    |
    219ms
  • 12.197.29.62

    AT&T Enterprises, LLC

    AS7018

    Farmington

    41.7198, -72.8320

    98% uptime

    105ms
    |
    5ms
    |
    215ms
  • 66.63.94.39

    Biddeford Internet Corp

    AS5760

    Farmington

    44.6706, -70.1512

    98% uptime

    86ms
    |
    3ms
    |
    76ms
  • 67.214.243.110

    FirstDigital Communications, LLC

    AS13415

    Farmington

    40.9805, -111.8874

    98% uptime

    131ms
    |
    5ms
    |
    284ms
  • 172.85.186.242

    Granite Telecommunications LLC

    AS16504

    Farmington

    36.7281, -108.2187

    100% uptime

    163ms
    |
    3ms
    |
    173ms
  • 204.186.251.34

    PenTeleData Inc.

    AS3737

    Fawn Lake Forest

    41.5084, -75.0643

    98% uptime

    90ms
    |
    2ms
    |
    147ms
  • 167.224.195.164

    OzarksGo, LLC

    AS395662

    Fayetteville

    36.0626, -94.1574

    100% uptime

    148ms
    |
    3ms
    |
    90ms
  • 170.10.183.214

    OzarksGo, LLC

    AS395662

    Fayetteville

    36.0626, -94.1574

    99% uptime

    145ms
    |
    3ms
    |
    31ms
  • 67.183.212.13

    Comcast Cable Communications, LLC

    AS7922

    Federal Way

    47.3223, -122.3126

    96% uptime

    179ms
    |
    3ms
    |
    312ms
  • 73.109.76.175

    Comcast Cable Communications, LLC

    AS7922

    Federal Way

    47.3223, -122.3126

    96% uptime

    176ms
    |
    3ms
    |
    344ms
  • 73.140.196.64

    Comcast Cable Communications, LLC

    AS7922

    Federal Way

    47.3223, -122.3126

    100% uptime

    177ms
    |
    4ms
    |
    317ms
  • 73.254.61.9

    Comcast Cable Communications, LLC

    AS7922

    Federal Way

    47.3223, -122.3126

    99% uptime

    178ms
    |
    13ms
    |
    346ms
  • 69.167.73.20

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    2ms
    |
    119ms
  • 69.167.73.22

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    98% uptime

    113ms
    |
    2ms
    |
    108ms
  • 69.167.73.24

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    5ms
    |
    113ms
  • 69.167.73.26

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    5ms
    |
    121ms
  • 69.167.73.27

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    4ms
    |
    117ms
  • 69.167.73.28

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    2ms
    |
    129ms
  • 69.167.73.29

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    2ms
    |
    126ms
  • 69.167.73.30

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    4ms
    |
    112ms
  • 69.167.73.31

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    100% uptime

    113ms
    |
    5ms
    |
    120ms
  • 69.167.73.32

    GTT Communications Inc.

    AS3257

    Fernandina Beach

    30.6697, -81.4626

    99% uptime

    113ms
    |
    2ms
    |
    124ms
  • 208.70.216.64

    Nova86

    AS401538

    Ferrelview

    39.3111, -94.6650

    99% uptime

    115ms
    |
    3ms
    |
    177ms
  • 173.85.214.22

    Frontier Communications of America, Inc.

    AS5650

    Fillmore

    38.9689, -112.3235

    100% uptime

    172ms
    |
    4ms
    |
    176ms
  • 24.123.136.194

    Charter Communications Inc

    AS10796

    Findlay

    41.0442, -83.6499

    98% uptime

    125ms
    |
    3ms
    |
    283ms
  • 147.219.73.153

    Charter Communications LLC

    AS20115

    Fitchburg

    42.9608, -89.4698

    99% uptime

    146ms
    |
    8ms
    |
    139ms
  • 70.44.215.153

    PenTeleData Inc.

    AS3737

    Fleetwood

    40.4540, -75.8180

    98% uptime

    99ms
    |
    1ms
    |
    152ms
  • 50.217.82.106

    Comcast Cable Communications, LLC

    AS7922

    Flint

    43.0125, -83.6875

    99% uptime

    123ms
    |
    1ms
    |
    103ms
  • 73.191.173.54

    Comcast Cable Communications, LLC

    AS7922

    Flint

    43.0125, -83.6875

    100% uptime

    134ms
    |
    5ms
    |
    229ms
  • 96.85.102.33

    Comcast Cable Communications, LLC

    AS7922

    Flint

    43.0125, -83.6875

    100% uptime

    129ms
    |
    2ms
    |
    328ms
  • 108.6.190.18

    Verizon Business

    AS701

    Floral Park

    40.7237, -73.7048

    100% uptime

    99ms
    |
    4ms
    |
    106ms
  • 142.190.156.50

    Uniti Fiber Holdings Inc.

    AS13760

    Foley

    30.4066, -87.6836

    100% uptime

    128ms
    |
    4ms
    |
    290ms
  • 98.123.157.10

    Charter Communications Inc

    AS10796

    Fort Branch

    38.2512, -87.5811

    99% uptime

    129ms
    |
    12ms
    |
    187ms
  • 50.147.85.166

    Comcast Cable Communications, LLC

    AS7922

    Fort Indiantown Gap

    40.4398, -76.5983

    100% uptime

    126ms
    |
    4ms
    |
    221ms
  • 50.216.204.150

    Comcast Cable Communications, LLC

    AS7922

    Fort Indiantown Gap

    40.4398, -76.5983

    96% uptime

    128ms
    |
    5ms
    |
    88ms
  • 73.124.34.138

    Comcast Cable Communications, LLC

    AS7922

    Fort Lauderdale

    26.1223, -80.1434

    99% uptime

    149ms
    |
    3ms
    |
    283ms
  • 73.138.6.3

    Comcast Cable Communications, LLC

    AS7922

    Fort Lauderdale

    26.1223, -80.1434

    96% uptime

    143ms
    |
    2ms
    |
    268ms
  • 66.42.177.114

    Cincinnati Bell Telephone Company LLC

    AS6181

    Fort Mitchell

    39.0595, -84.5474

    99% uptime

    102ms
    |
    9ms
    |
    109ms
  • 65.141.117.234

    CenturyLink Communications, LLC

    AS209

    Fort Myers

    26.6217, -81.8406

    100% uptime

    132ms
    |
    10ms
    |
    184ms
  • 12.5.226.170

    AT&T Enterprises, LLC

    AS7018

    Fort Smith

    35.3859, -94.3986

    99% uptime

    149ms
    |
    3ms
    |
    189ms
  • 64.137.190.170

    Dobson Technologies - Transport and Telecom Solutions, LLC

    AS30029

    Fort Smith

    35.3859, -94.3986

    100% uptime

    128ms
    |
    2ms
    |
    203ms
  • 159.117.62.66

    Big Bend Telephone Company, Inc.

    AS36105

    Fort Stockton

    30.8940, -102.8793

    100% uptime

    156ms
    |
    1ms
    |
    245ms
  • 64.183.77.26

    Charter Communications Inc

    AS20001

    Fortuna Foothills

    32.6578, -114.4119

    100% uptime

    173ms
    |
    9ms
    |
    145ms
  • 76.53.123.202

    Charter Communications Inc

    AS20001

    Fortuna Foothills

    32.6578, -114.4119

    100% uptime

    172ms
    |
    2ms
    |
    222ms
  • 68.45.198.192

    Comcast Cable Communications, LLC

    AS7922

    Fort Wayne

    41.1306, -85.1289

    99% uptime

    136ms
    |
    8ms
    |
    250ms
  • 72.11.14.202

    Metalink Technologies, Inc.

    AS13638

    Fort Wayne

    41.1306, -85.1289

    100% uptime

    116ms
    |
    11ms
    |
    60ms
  • 184.18.189.6

    Frontier Communications of America, Inc.

    AS5650

    Fort Wayne

    41.1306, -85.1289

    100% uptime

    118ms
    |
    2ms
    |
    146ms
  • 24.182.218.46

    Charter Communications LLC

    AS20115

    Fort Worth

    32.7254, -97.3208

    98% uptime

    143ms
    |
    3ms
    |
    228ms
  • 66.182.198.167

    Millennium Telcom LLC

    AS20135

    Fort Worth

    32.7254, -97.3208

    99% uptime

    118ms
    |
    3ms
    |
    150ms
  • 68.71.77.152

    Millennium Telcom LLC

    AS20135

    Fort Worth

    32.7254, -97.3208

    100% uptime

    118ms
    |
    2ms
    |
    137ms
  • 75.141.144.165

    Charter Communications LLC

    AS20115

    Fort Worth

    32.7254, -97.3208

    100% uptime

    147ms
    |
    3ms
    |
    219ms
  • 146.235.180.7

    JCPenney

    AS10857

    Fort Worth

    32.7254, -97.3208

    100% uptime

    137ms
    |
    1ms
    |
    348ms
  • 64.57.203.10

    Consolidated Smart Systems LLC

    AS396106

    Fountainebleau

    25.7729, -80.3478

    96% uptime

    114ms
    |
    2ms
    |
    243ms
  • 24.102.154.147

    PenTeleData Inc.

    AS3737

    Fountain Hill

    40.6015, -75.3952

    100% uptime

    99ms
    |
    3ms
    |
    148ms
  • 24.229.60.46

    PenTeleData Inc.

    AS3737

    Fountain Hill

    40.6015, -75.3952

    96% uptime

    96ms
    |
    2ms
    |
    122ms
  • 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