DNS Servers

United States of America 4331 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

  • 154.53.45.61

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    99% uptime

    124ms
    |
    9ms
    |
    49ms
  • 157.173.206.12

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    100% uptime

    124ms
    |
    3ms
    |
    30ms
  • 194.238.28.161

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    98% uptime

    124ms
    |
    6ms
    |
    256ms
  • 207.244.226.135

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    99% uptime

    115ms
    |
    1ms
    |
    236ms
  • 207.244.232.108

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    100% uptime

    124ms
    |
    4ms
    |
    259ms
  • 207.244.243.206

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    100% uptime

    114ms
    |
    3ms
    |
    150ms
  • 207.244.248.89

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    100% uptime

    114ms
    |
    1ms
    |
    164ms
  • 209.126.4.241

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    98% uptime

    117ms
    |
    3ms
    |
    259ms
  • 209.126.86.156

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    100% uptime

    117ms
    |
    8ms
    |
    257ms
  • 209.126.106.250

    velia.net

    AS30083

    St. Louis

    38.6273, -90.1979

    98% uptime

    117ms
    |
    4ms
    |
    148ms
  • 209.126.124.113

    velia.net

    AS30083

    St. Louis

    38.6273, -90.1979

    100% uptime

    117ms
    |
    5ms
    |
    125ms
  • 209.135.132.135

    CDM

    AS6428

    St. Louis

    38.6273, -90.1979

    98% uptime

    119ms
    |
    20ms
    |
    157ms
  • 209.145.53.142

    Contabo Inc.

    AS40021

    St. Louis

    38.6273, -90.1979

    98% uptime

    122ms
    |
    8ms
    |
    261ms
  • 209.239.115.39

    velia.net

    AS30083

    St. Louis

    38.6273, -90.1979

    100% uptime

    117ms
    |
    0ms
    |
    123ms
  • 50.168.47.225

    Comcast Cable Communications, LLC

    AS7922

    Stockton

    37.9577, -121.2908

    98% uptime

    167ms
    |
    3ms
    |
    172ms
  • 73.151.155.98

    Comcast Cable Communications, LLC

    AS7922

    Stockton

    37.9577, -121.2908

    100% uptime

    177ms
    |
    5ms
    |
    314ms
  • 199.33.125.42

    Rebel Hosting

    AS26481

    Stockton

    37.9577, -121.2908

    98% uptime

    156ms
    |
    4ms
    |
    211ms
  • 146.115.122.207

    RCN

    AS6079

    Stoneham

    42.4801, -71.0995

    100% uptime

    114ms
    |
    3ms
    |
    163ms
  • 209.6.194.89

    RCN

    AS6079

    Stoneham

    42.4801, -71.0995

    100% uptime

    115ms
    |
    3ms
    |
    154ms
  • 209.6.216.7

    RCN

    AS6079

    Stoneham

    42.4801, -71.0995

    98% uptime

    114ms
    |
    1ms
    |
    152ms
  • 209.6.216.29

    RCN

    AS6079

    Stoneham

    42.4801, -71.0995

    98% uptime

    115ms
    |
    1ms
    |
    156ms
  • 209.6.228.63

    RCN

    AS6079

    Stoneham

    42.4801, -71.0995

    100% uptime

    114ms
    |
    2ms
    |
    197ms
  • 23.157.208.163

    upnetwi, llc

    AS398310

    Stoughton

    42.9169, -89.2179

    100% uptime

    108ms
    |
    1ms
    |
    264ms
  • 24.192.108.68

    WideOpenWest Finance LLC

    AS12083

    St. Petersburg

    27.7709, -82.6793

    100% uptime

    143ms
    |
    16ms
    |
    240ms
  • 24.214.44.8

    WideOpenWest Finance LLC

    AS12083

    St. Petersburg

    27.7709, -82.6793

    100% uptime

    137ms
    |
    95ms
    |
    278ms
  • 50.115.23.73

    KGIX

    AS53861

    St. Petersburg

    27.7709, -82.6793

    98% uptime

    128ms
    |
    22ms
    |
    140ms
  • 74.50.98.254

    HIVELOCITY, Inc.

    AS29802

    St. Petersburg

    27.7709, -82.6793

    98% uptime

    125ms
    |
    12ms
    |
    184ms
  • 74.50.118.254

    HIVELOCITY, Inc.

    AS29802

    St. Petersburg

    27.7709, -82.6793

    99% uptime

    127ms
    |
    28ms
    |
    175ms
  • 74.50.120.254

    HIVELOCITY, Inc.

    AS29802

    St. Petersburg

    27.7709, -82.6793

    99% uptime

    127ms
    |
    15ms
    |
    183ms
  • 74.50.123.254

    HIVELOCITY, Inc.

    AS29802

    St. Petersburg

    27.7709, -82.6793

    98% uptime

    127ms
    |
    9ms
    |
    183ms
  • 209.113.173.187

    Metro Communications Company, Inc.

    AS53610

    Streator

    41.1209, -88.8354

    96% uptime

    126ms
    |
    0ms
    |
    165ms
  • 66.29.209.62

    Breezeline

    AS11776

    Strongsville

    41.3145, -81.8357

    100% uptime

    125ms
    |
    3ms
    |
    268ms
  • 24.115.157.5

    PenTeleData Inc.

    AS3737

    Stroudsburg

    40.9868, -75.1946

    98% uptime

    102ms
    |
    4ms
    |
    169ms
  • 73.147.157.100

    Comcast Cable Communications, LLC

    AS7922

    Stuarts Draft

    38.0301, -79.0336

    100% uptime

    124ms
    |
    4ms
    |
    202ms
  • 73.177.136.160

    Comcast Cable Communications, LLC

    AS7922

    Stuarts Draft

    38.0301, -79.0336

    98% uptime

    119ms
    |
    7ms
    |
    373ms
  • 216.254.231.105

    Clarity Telecom LLC

    AS20412

    Sturgis

    44.4097, -103.5091

    99% uptime

    134ms
    |
    7ms
    |
    287ms
  • 206.40.44.170

    Call One Inc.

    AS63186

    Sugar Hill

    34.1065, -84.0335

    96% uptime

    139ms
    |
    14ms
    |
    64ms
  • 162.255.12.157

    Metro Communications Company, Inc.

    AS53610

    Sullivan

    39.5995, -88.6078

    99% uptime

    114ms
    |
    3ms
    |
    135ms
  • 209.33.42.242

    Optimum

    AS19108

    Sulphur Springs

    33.1384, -95.6011

    98% uptime

    141ms
    |
    3ms
    |
    162ms
  • 24.229.3.238

    PenTeleData Inc.

    AS3737

    Sunbury

    40.8626, -76.7944

    98% uptime

    100ms
    |
    4ms
    |
    151ms
  • 12.231.188.3

    AT&T Enterprises, LLC

    AS7018

    Sunnyvale

    37.3688, -122.0363

    100% uptime

    171ms
    |
    4ms
    |
    158ms
  • 50.208.48.45

    Comcast Cable Communications, LLC

    AS7922

    Sunnyvale

    37.3688, -122.0363

    98% uptime

    175ms
    |
    2ms
    |
    129ms
  • 98.42.225.164

    Comcast Cable Communications, LLC

    AS7922

    Sunnyvale

    37.3688, -122.0363

    100% uptime

    168ms
    |
    2ms
    |
    300ms
  • 154.3.62.63

    Cogent Communications, LLC

    AS174

    Sunnyvale

    37.3688, -122.0363

    99% uptime

    161ms
    |
    8ms
    |
    19ms
  • 69.128.51.197

    TDS TELECOM

    AS4181

    Sun Prairie

    43.1836, -89.2137

    100% uptime

    118ms
    |
    3ms
    |
    172ms
  • 199.192.160.76

    CopperNet Systems, Inc.

    AS33133

    Superior

    33.2940, -111.0962

    98% uptime

    152ms
    |
    7ms
    |
    250ms
  • 204.9.214.71

    CopperNet Systems, Inc.

    AS33133

    Superior

    33.2940, -111.0962

    99% uptime

    156ms
    |
    6ms
    |
    248ms
  • 204.9.214.114

    CopperNet Systems, Inc.

    AS33133

    Superior

    33.2940, -111.0962

    100% uptime

    161ms
    |
    9ms
    |
    272ms
  • 38.188.129.72

    Wyyerd Group

    AS54936

    Surprise

    33.6306, -112.3332

    100% uptime

    146ms
    |
    3ms
    |
    183ms
  • 24.178.96.242

    Charter Communications LLC

    AS20115

    Suwanee

    34.0515, -84.0713

    99% uptime

    124ms
    |
    8ms
    |
    96ms
  • 47.48.225.74

    Charter Communications LLC

    AS20115

    Suwanee

    34.0515, -84.0713

    100% uptime

    121ms
    |
    9ms
    |
    212ms
  • 38.77.18.2

    New Visions Communications Inc

    AS393422

    Syracuse

    43.0481, -76.1474

    98% uptime

    103ms
    |
    3ms
    |
    134ms
  • 38.77.23.192

    New Visions Communications Inc

    AS393422

    Syracuse

    43.0481, -76.1474

    100% uptime

    104ms
    |
    2ms
    |
    135ms
  • 38.121.196.155

    Mohawk Networks LLC

    AS63104

    Syracuse

    43.0481, -76.1474

    98% uptime

    109ms
    |
    10ms
    |
    190ms
  • 38.121.198.241

    Mohawk Networks LLC

    AS63104

    Syracuse

    43.0481, -76.1474

    100% uptime

    102ms
    |
    5ms
    |
    54ms
  • 173.216.153.57

    Optimum

    AS19108

    Table Rock

    36.6048, -93.2988

    98% uptime

    144ms
    |
    3ms
    |
    243ms
  • 50.197.73.245

    Comcast Cable Communications, LLC

    AS7922

    Tacoma

    47.2529, -122.4443

    99% uptime

    175ms
    |
    12ms
    |
    232ms
  • 104.151.230.143

    Coosa Valley Technologies Inc

    AS399268

    Talladega

    33.4359, -86.1058

    100% uptime

    109ms
    |
    5ms
    |
    54ms
  • 8.24.21.236

    Hotwire Communications

    AS23089

    Tallahassee

    30.4383, -84.2807

    100% uptime

    134ms
    |
    6ms
    |
    225ms
  • 73.118.79.150

    Comcast Cable Communications, LLC

    AS7922

    Tallahassee

    30.4383, -84.2807

    98% uptime

    136ms
    |
    4ms
    |
    247ms
  • 142.190.46.52

    Uniti Fiber Holdings Inc.

    AS13760

    Tallahassee

    30.4383, -84.2807

    98% uptime

    128ms
    |
    9ms
    |
    279ms
  • 23.29.114.254

    HIVELOCITY, Inc.

    AS29802

    Tampa

    27.9475, -82.4584

    100% uptime

    124ms
    |
    8ms
    |
    179ms
  • 23.111.133.234

    HIVELOCITY, Inc.

    AS29802

    Tampa

    27.9475, -82.4584

    98% uptime

    123ms
    |
    5ms
    |
    333ms
  • 23.227.202.99

    HIVELOCITY, Inc.

    AS29802

    Tampa

    27.9475, -82.4584

    98% uptime

    124ms
    |
    4ms
    |
    58ms
  • 47.203.155.7

    Frontier Communications of America, Inc.

    AS5650

    Tampa

    27.9475, -82.4584

    100% uptime

    140ms
    |
    3ms
    |
    55ms
  • 47.207.9.63

    Frontier Communications of America, Inc.

    AS5650

    Tampa

    27.9475, -82.4584

    100% uptime

    133ms
    |
    1ms
    |
    18ms
  • 74.50.97.254

    HIVELOCITY, Inc.

    AS29802

    Tampa

    27.9475, -82.4584

    100% uptime

    120ms
    |
    10ms
    |
    184ms
  • 172.109.222.78

    Frontier Communications of America, Inc.

    AS5650

    Tampa

    27.9475, -82.4584

    96% uptime

    137ms
    |
    1ms
    |
    296ms
  • 174.47.44.151

    Hillsborough County Aviation Authority

    AS396439

    Tampa

    27.9475, -82.4584

    100% uptime

    122ms
    |
    6ms
    |
    82ms
  • 174.47.44.152

    Hillsborough County Aviation Authority

    AS396439

    Tampa

    27.9475, -82.4584

    99% uptime

    124ms
    |
    10ms
    |
    97ms
  • 174.47.44.161

    Hillsborough County Aviation Authority

    AS396439

    Tampa

    27.9475, -82.4584

    99% uptime

    124ms
    |
    8ms
    |
    74ms
  • 38.52.4.105

    Kit Carson Electric Cooperative, Inc

    AS33152

    Taos

    36.4072, -105.5731

    98% uptime

    144ms
    |
    9ms
    |
    372ms
  • 47.181.173.170

    Frontier Communications of America, Inc.

    AS5650

    Temecula

    33.4936, -117.1484

    99% uptime

    170ms
    |
    14ms
    |
    116ms
  • 192.190.255.80

    AeroSurf

    AS400996

    Temecula

    33.4936, -117.1484

    96% uptime

    158ms
    |
    53ms
    |
    182ms
  • 150.220.18.116

    Charter Communications Inc

    AS11427

    Temple

    31.0982, -97.3428

    98% uptime

    139ms
    |
    4ms
    |
    256ms
  • 160.3.199.16

    CABLE ONE, INC.

    AS11492

    Texarkana

    33.4251, -94.0477

    99% uptime

    142ms
    |
    2ms
    |
    86ms
  • 174.137.11.157

    Southwest Arkansas Telephone Cooperative

    AS46632

    Texarkana

    33.4418, -94.0377

    96% uptime

    134ms
    |
    8ms
    |
    46ms
  • 184.155.46.14

    CABLE ONE, INC.

    AS11492

    Texarkana

    33.4251, -94.0477

    100% uptime

    154ms
    |
    4ms
    |
    110ms
  • 34.82.144.160

    Google LLC

    AS396982

    The Dalles

    45.5946, -121.1787

    100% uptime

    140ms
    |
    4ms
    |
    203ms
  • 34.168.139.126

    Google LLC

    AS396982

    The Dalles

    45.5946, -121.1787

    99% uptime

    140ms
    |
    3ms
    |
    93ms
  • 35.203.157.243

    Google LLC

    AS396982

    The Dalles

    45.5946, -121.1787

    100% uptime

    140ms
    |
    3ms
    |
    208ms
  • 35.212.183.80

    Google LLC

    AS15169

    The Dalles

    45.5946, -121.1787

    99% uptime

    151ms
    |
    5ms
    |
    182ms
  • 216.144.128.139

    Wikstrom Telephone Company, Incorporated

    AS33362

    Thief River Falls

    48.1191, -96.1812

    100% uptime

    122ms
    |
    7ms
    |
    110ms
  • 71.31.103.247

    Windstream Communications LLC

    AS7029

    Thomasville

    30.8366, -83.9788

    98% uptime

    111ms
    |
    2ms
    |
    171ms
  • 67.162.148.238

    Comcast Cable Communications, LLC

    AS7922

    Thornton

    39.8680, -104.9719

    100% uptime

    152ms
    |
    4ms
    |
    220ms
  • 73.153.106.71

    Comcast Cable Communications, LLC

    AS7922

    Thornton

    39.8680, -104.9719

    99% uptime

    152ms
    |
    11ms
    |
    84ms
  • 204.133.182.166

    CenturyLink Communications, LLC

    AS209

    Thornton

    39.8680, -104.9719

    100% uptime

    140ms
    |
    15ms
    |
    201ms
  • 47.180.193.211

    Frontier Communications of America, Inc.

    AS5650

    Thousand Oaks

    34.1706, -118.8376

    100% uptime

    166ms
    |
    9ms
    |
    206ms
  • 47.181.178.69

    Frontier Communications of America, Inc.

    AS5650

    Thousand Oaks

    34.1706, -118.8376

    99% uptime

    168ms
    |
    6ms
    |
    49ms
  • 198.36.146.81

    Cherryland Services Inc

    AS13904

    Three Points

    32.0767, -111.3137

    99% uptime

    167ms
    |
    20ms
    |
    209ms
  • 24.52.76.195

    Buckeye Cablevision, Inc.

    AS13490

    Toledo

    41.6639, -83.5552

    100% uptime

    109ms
    |
    2ms
    |
    110ms
  • 205.251.162.162

    CISP

    AS16617

    Toledo

    41.6639, -83.5552

    99% uptime

    116ms
    |
    0ms
    |
    115ms
  • 192.96.65.10

    Block Line Systems, LLC

    AS26076

    Toms River

    39.9537, -74.1979

    99% uptime

    93ms
    |
    9ms
    |
    118ms
  • 12.169.244.145

    AT&T Enterprises, LLC

    AS7018

    Tonopah

    38.0672, -117.2301

    98% uptime

    189ms
    |
    3ms
    |
    321ms
  • 98.6.32.250

    Charter Communications Inc

    AS11427

    Tornillo

    31.4454, -106.0883

    100% uptime

    146ms
    |
    1ms
    |
    268ms
  • 47.155.4.168

    Frontier Communications of America, Inc.

    AS5650

    Torrance

    33.8359, -118.3406

    98% uptime

    163ms
    |
    1ms
    |
    123ms
  • 69.160.165.99

    Gibson Electric Membership Corporation

    AS30257

    Trenton

    35.9806, -88.9415

    100% uptime

    115ms
    |
    11ms
    |
    114ms
  • 96.27.136.246

    WideOpenWest Finance LLC

    AS12083

    Trenton

    42.1395, -83.1783

    98% uptime

    112ms
    |
    0ms
    |
    169ms
  • 50.34.0.54

    Wholesail networks LLC

    AS20055

    Tri-Cities

    46.2454, -119.1962

    96% uptime

    150ms
    |
    7ms
    |
    252ms
  • 47.199.56.111

    Frontier Communications of America, Inc.

    AS5650

    Trinity

    28.1808, -82.6818

    100% uptime

    136ms
    |
    3ms
    |
    182ms