DNS Servers

United States of America 4321 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

  • 147.135.36.11

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    99% uptime

    158ms
    |
    4ms
    |
    243ms
  • 174.174.7.13

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    96% uptime

    174ms
    |
    2ms
    |
    306ms
  • 174.174.42.61

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    173ms
    |
    8ms
    |
    310ms
  • 205.238.26.240

    SCN Research, Inc.

    AS12204

    Portland

    45.5483, -122.8276

    100% uptime

    140ms
    |
    6ms
    |
    165ms
  • 98.55.181.154

    Comcast Cable Communications, LLC

    AS7922

    Port Saint Lucie

    27.2939, -80.3503

    98% uptime

    141ms
    |
    10ms
    |
    293ms
  • 207.70.246.2

    Sho Me Technologies, LLC

    AS55140

    Potosi

    37.9364, -90.7879

    99% uptime

    111ms
    |
    6ms
    |
    62ms
  • 170.39.183.58

    Northwest Open Access Network

    AS16713

    Poulsbo

    47.7359, -122.6465

    96% uptime

    138ms
    |
    1ms
    |
    46ms
  • 45.41.16.238

    REV

    AS5009

    Prairieville

    30.3030, -90.9720

    98% uptime

    135ms
    |
    2ms
    |
    228ms
  • 64.237.83.235

    REV

    AS5009

    Prairieville

    30.3030, -90.9720

    98% uptime

    135ms
    |
    2ms
    |
    248ms
  • 209.124.255.31

    REV

    AS5009

    Prairieville

    30.3030, -90.9720

    100% uptime

    136ms
    |
    3ms
    |
    277ms
  • 24.119.109.156

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    98% uptime

    169ms
    |
    13ms
    |
    125ms
  • 66.164.83.33

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    167ms
    |
    2ms
    |
    278ms
  • 66.164.134.254

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    96% uptime

    164ms
    |
    2ms
    |
    80ms
  • 67.60.109.231

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    98% uptime

    166ms
    |
    11ms
    |
    281ms
  • 67.61.88.118

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    165ms
    |
    3ms
    |
    58ms
  • 96.19.136.209

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    167ms
    |
    2ms
    |
    126ms
  • 174.126.32.113

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    167ms
    |
    8ms
    |
    92ms
  • 67.247.198.103

    Charter Communications Inc

    AS11351

    Presque Isle

    46.6812, -68.0159

    100% uptime

    143ms
    |
    3ms
    |
    99ms
  • 74.213.193.135

    Emery Telcom

    AS36728

    Price

    39.5994, -110.8107

    100% uptime

    128ms
    |
    6ms
    |
    71ms
  • 66.199.221.198

    Northeast Service Cooperative (ASN-NEWMN)

    AS21873

    Proctor

    46.7472, -92.2255

    100% uptime

    116ms
    |
    7ms
    |
    79ms
  • 24.249.209.154

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    100% uptime

    106ms
    |
    1ms
    |
    116ms
  • 70.164.31.242

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    100% uptime

    106ms
    |
    0ms
    |
    167ms
  • 98.172.148.107

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    98% uptime

    105ms
    |
    0ms
    |
    167ms
  • 98.175.201.90

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    100% uptime

    110ms
    |
    1ms
    |
    74ms
  • 128.254.209.141

    STRATA NETWORKS

    AS30432

    Providence

    41.7063, -111.8172

    100% uptime

    141ms
    |
    3ms
    |
    74ms
  • 174.77.113.66

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    99% uptime

    107ms
    |
    0ms
    |
    134ms
  • 184.179.56.50

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    98% uptime

    114ms
    |
    1ms
    |
    154ms
  • 97.75.184.70

    FirstDigital Communications, LLC

    AS13415

    Provo

    40.2338, -111.6585

    99% uptime

    139ms
    |
    2ms
    |
    198ms
  • 162.240.19.224

    Unified Layer

    AS46606

    Provo

    40.2338, -111.6585

    100% uptime

    149ms
    |
    2ms
    |
    184ms
  • 162.240.145.251

    Unified Layer

    AS46606

    Provo

    40.2338, -111.6585

    100% uptime

    147ms
    |
    11ms
    |
    286ms
  • 162.240.230.236

    Unified Layer

    AS46606

    Provo

    40.2338, -111.6585

    100% uptime

    147ms
    |
    11ms
    |
    298ms
  • 76.72.147.141

    Razzo Link, Inc.

    AS46826

    Prunedale

    36.7758, -121.6697

    96% uptime

    152ms
    |
    1ms
    |
    192ms
  • 24.8.210.41

    Comcast Cable Communications, LLC

    AS7922

    Pueblo

    38.2544, -104.6091

    99% uptime

    153ms
    |
    14ms
    |
    279ms
  • 65.73.209.122

    Frontier Communications of America, Inc.

    AS5650

    Quartzsite

    33.6639, -114.2300

    99% uptime

    167ms
    |
    6ms
    |
    86ms
  • 66.226.125.90

    Adams TelSystems, Inc.

    AS12033

    Quincy

    39.9356, -91.4099

    100% uptime

    108ms
    |
    9ms
    |
    22ms
  • 206.130.133.62

    Ziply Fiber

    AS13370

    Quincy

    47.2343, -119.8525

    100% uptime

    150ms
    |
    8ms
    |
    88ms
  • 76.58.164.214

    Charter Communications Inc

    AS10796

    Racine

    42.7261, -87.7828

    100% uptime

    125ms
    |
    3ms
    |
    128ms
  • 216.176.96.248

    RTC Communications

    AS14574

    Raglesville

    38.8034, -86.9614

    100% uptime

    112ms
    |
    3ms
    |
    86ms
  • 216.176.99.59

    RTC Communications

    AS14574

    Raglesville

    38.8034, -86.9614

    100% uptime

    113ms
    |
    3ms
    |
    106ms
  • 12.0.150.131

    AT&T Enterprises, LLC

    AS7018

    Raleigh

    35.7721, -78.6386

    98% uptime

    118ms
    |
    4ms
    |
    92ms
  • 65.56.164.150

    Level 3 Parent, LLC

    AS3356

    Raleigh

    35.7721, -78.6386

    96% uptime

    109ms
    |
    0ms
    |
    167ms
  • 66.57.219.34

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    100% uptime

    108ms
    |
    2ms
    |
    54ms
  • 70.63.136.98

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    100% uptime

    109ms
    |
    3ms
    |
    164ms
  • 98.101.152.242

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    96% uptime

    121ms
    |
    4ms
    |
    68ms
  • 136.56.15.69

    Google Fiber Inc.

    AS16591

    Raleigh

    35.7721, -78.6386

    99% uptime

    122ms
    |
    16ms
    |
    101ms
  • 136.56.222.144

    Google Fiber Inc.

    AS16591

    Raleigh

    35.7721, -78.6386

    96% uptime

    119ms
    |
    2ms
    |
    124ms
  • 136.61.14.124

    Google Fiber Inc.

    AS16591

    Raleigh

    35.7721, -78.6386

    98% uptime

    118ms
    |
    2ms
    |
    79ms
  • 173.95.28.181

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    100% uptime

    109ms
    |
    2ms
    |
    164ms
  • 64.5.98.222

    Datacate Inc.

    AS55106

    Rancho Cordova

    38.6072, -121.2761

    98% uptime

    141ms
    |
    13ms
    |
    166ms
  • 47.28.111.181

    Charter Communications LLC

    AS20115

    Rancho Cucamonga

    34.1064, -117.5931

    98% uptime

    177ms
    |
    3ms
    |
    79ms
  • 68.225.25.164

    Cox Communications Inc.

    AS22773

    Rancho Santa Margarita

    33.6409, -117.6031

    98% uptime

    180ms
    |
    4ms
    |
    232ms
  • 70.168.147.177

    Cox Communications Inc.

    AS22773

    Rancho Santa Margarita

    33.6409, -117.6031

    96% uptime

    164ms
    |
    4ms
    |
    140ms
  • 66.198.221.147

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    100% uptime

    125ms
    |
    1ms
    |
    189ms
  • 66.198.221.223

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    100% uptime

    126ms
    |
    6ms
    |
    185ms
  • 66.198.222.23

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    100% uptime

    126ms
    |
    7ms
    |
    186ms
  • 209.113.202.229

    Metro Communications Company, Inc.

    AS53610

    Rantoul

    40.3084, -88.1559

    100% uptime

    123ms
    |
    4ms
    |
    150ms
  • 64.179.136.140

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    98% uptime

    133ms
    |
    2ms
    |
    240ms
  • 64.179.160.90

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    99% uptime

    133ms
    |
    4ms
    |
    245ms
  • 64.179.182.3

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    132ms
    |
    1ms
    |
    332ms
  • 67.158.35.122

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    133ms
    |
    9ms
    |
    238ms
  • 208.117.98.94

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    123ms
    |
    1ms
    |
    170ms
  • 208.117.99.170

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    134ms
    |
    2ms
    |
    238ms
  • 209.159.195.142

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    96% uptime

    133ms
    |
    9ms
    |
    270ms
  • 209.159.209.235

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    133ms
    |
    1ms
    |
    247ms
  • 204.89.160.41

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    101ms
    |
    1ms
    |
    103ms
  • 204.89.160.82

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    99ms
    |
    1ms
    |
    108ms
  • 69.14.66.245

    WideOpenWest Finance LLC

    AS12083

    Redford

    42.3834, -83.2966

    99% uptime

    125ms
    |
    2ms
    |
    225ms
  • 24.17.9.50

    Comcast Cable Communications, LLC

    AS7922

    Redmond

    47.6740, -122.1215

    100% uptime

    175ms
    |
    3ms
    |
    248ms
  • 50.175.70.1

    Comcast Cable Communications, LLC

    AS7922

    Redmond

    47.6740, -122.1215

    100% uptime

    167ms
    |
    19ms
    |
    180ms
  • 97.186.89.111

    Verizon Business

    AS6167

    Redmond

    47.6740, -122.1215

    98% uptime

    214ms
    |
    33ms
    |
    324ms
  • 167.142.190.106

    Aureon Network Services

    AS5056

    Red Oak

    41.0097, -95.2255

    99% uptime

    110ms
    |
    7ms
    |
    171ms
  • 45.61.58.140

    Kamatera, Inc.

    AS36007

    Redondo Beach

    33.8707, -118.3715

    99% uptime

    165ms
    |
    7ms
    |
    193ms
  • 50.219.130.109

    Comcast Cable Communications, LLC

    AS7922

    Redwood City

    37.4852, -122.2364

    96% uptime

    166ms
    |
    2ms
    |
    215ms
  • 47.44.250.146

    Charter Communications LLC

    AS20115

    Reno

    39.5296, -119.8138

    100% uptime

    184ms
    |
    2ms
    |
    150ms
  • 75.141.253.76

    Charter Communications LLC

    AS20115

    Reno

    39.5296, -119.8138

    100% uptime

    196ms
    |
    3ms
    |
    296ms
  • 67.183.154.191

    Comcast Cable Communications, LLC

    AS7922

    Renton

    47.4829, -122.2171

    96% uptime

    180ms
    |
    4ms
    |
    344ms
  • 15.204.198.231

    OVH SAS

    AS16276

    Reston

    38.9687, -77.3411

    100% uptime

    90ms
    |
    0ms
    |
    114ms
  • 15.204.224.77

    OVH SAS

    AS16276

    Reston

    38.9687, -77.3411

    100% uptime

    90ms
    |
    0ms
    |
    122ms
  • 76.106.42.37

    Comcast Cable Communications, LLC

    AS7922

    Reston

    38.9687, -77.3411

    100% uptime

    120ms
    |
    3ms
    |
    194ms
  • 135.148.43.69

    OVH SAS

    AS16276

    Reston

    38.9687, -77.3411

    100% uptime

    91ms
    |
    1ms
    |
    120ms
  • 135.148.101.81

    OVH SAS

    AS16276

    Reston

    38.9687, -77.3411

    100% uptime

    91ms
    |
    0ms
    |
    121ms
  • 192.110.255.55

    Deteque

    AS54054

    Reston

    38.9687, -77.3411

    99% uptime

    92ms
    |
    3ms
    |
    110ms
  • 23.245.248.15

    Breezeline

    AS11776

    Reynoldsburg

    39.9548, -82.8121

    100% uptime

    128ms
    |
    2ms
    |
    52ms
  • 47.49.49.178

    Charter Communications LLC

    AS20115

    Rice Lake

    45.5061, -91.7382

    96% uptime

    144ms
    |
    3ms
    |
    358ms
  • 45.33.7.109

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    98% uptime

    138ms
    |
    2ms
    |
    180ms
  • 45.56.73.107

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    140ms
    |
    22ms
    |
    40ms
  • 50.116.18.154

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    140ms
    |
    3ms
    |
    152ms
  • 50.116.26.241

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    138ms
    |
    3ms
    |
    22ms
  • 67.79.63.102

    Charter Communications Inc

    AS11427

    Richardson

    32.9482, -96.7297

    96% uptime

    134ms
    |
    2ms
    |
    164ms
  • 69.164.195.252

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    139ms
    |
    2ms
    |
    155ms
  • 104.9.44.233

    AT&T Enterprises, LLC

    AS7018

    Richardson

    32.9482, -96.7297

    100% uptime

    134ms
    |
    2ms
    |
    190ms
  • 104.200.20.16

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    98% uptime

    133ms
    |
    3ms
    |
    157ms
  • 192.46.219.231

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    99% uptime

    138ms
    |
    2ms
    |
    41ms
  • 4.28.226.157

    Level 3 Parent, LLC

    AS3356

    Richmond

    37.5538, -77.4603

    100% uptime

    103ms
    |
    6ms
    |
    84ms
  • 50.234.131.225

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.5538, -77.4603

    100% uptime

    114ms
    |
    4ms
    |
    169ms
  • 73.12.109.208

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.5538, -77.4603

    100% uptime

    123ms
    |
    6ms
    |
    220ms
  • 162.252.149.151

    ALTIUS Broadband, LLC

    AS63060

    Richmond

    39.8289, -84.8902

    96% uptime

    138ms
    |
    19ms
    |
    373ms
  • 173.53.55.101

    Verizon Business

    AS701

    Richmond

    37.5538, -77.4603

    99% uptime

    111ms
    |
    1ms
    |
    100ms
  • 173.163.193.221

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.5538, -77.4603

    98% uptime

    123ms
    |
    5ms
    |
    243ms
  • 100.19.34.52

    Verizon Business

    AS701

    Ridley Park

    39.8812, -75.3238

    98% uptime

    99ms
    |
    2ms
    |
    801ms