DNS Servers

United States of America 4329 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

  • 8.2.220.10

    Hotwire Communications

    AS23089

    Aberdeen

    26.5506, -80.1487

    100% uptime

    124ms
    |
    5ms
    |
    143ms
  • 8.19.61.69

    Hotwire Communications

    AS23089

    Aberdeen

    26.5506, -80.1487

    100% uptime

    128ms
    |
    11ms
    |
    200ms
  • 8.19.61.101

    Hotwire Communications

    AS23089

    Aberdeen

    26.5506, -80.1487

    98% uptime

    127ms
    |
    5ms
    |
    203ms
  • 8.28.109.52

    Hotwire Communications

    AS23089

    Aberdeen

    26.5506, -80.1487

    96% uptime

    132ms
    |
    7ms
    |
    162ms
  • 45.74.89.232

    Hotwire Communications

    AS23089

    Aberdeen

    26.5506, -80.1487

    98% uptime

    128ms
    |
    10ms
    |
    175ms
  • 134.56.144.191

    Hotwire Communications

    AS23089

    Aberdeen

    26.5506, -80.1487

    98% uptime

    127ms
    |
    6ms
    |
    160ms
  • 174.108.206.170

    Charter Communications Inc

    AS11426

    Aberdeen

    35.1315, -79.4295

    100% uptime

    118ms
    |
    2ms
    |
    174ms
  • 67.61.231.100

    CABLE ONE, INC.

    AS11492

    Ada

    34.7745, -96.6783

    100% uptime

    155ms
    |
    2ms
    |
    86ms
  • 71.72.38.99

    Charter Communications Inc

    AS10796

    Akron

    41.0814, -81.5190

    100% uptime

    131ms
    |
    6ms
    |
    102ms
  • 199.101.50.86

    HostRocket.com, Inc.

    AS23535

    Albany

    42.6526, -73.7562

    98% uptime

    91ms
    |
    6ms
    |
    74ms
  • 216.120.236.70

    HostRocket.com, Inc.

    AS23535

    Albany

    42.6526, -73.7562

    99% uptime

    91ms
    |
    9ms
    |
    73ms
  • 66.57.15.107

    Charter Communications Inc

    AS11426

    Albemarle

    35.3501, -80.2001

    100% uptime

    118ms
    |
    2ms
    |
    174ms
  • 4.2.192.138

    Level 3 Parent, LLC

    AS3356

    Albuquerque

    35.0845, -106.6511

    100% uptime

    143ms
    |
    12ms
    |
    101ms
  • 23.129.116.5

    Central New Mexico Electric Cooperative, Inc.

    AS400975

    Albuquerque

    35.0845, -106.6511

    98% uptime

    143ms
    |
    2ms
    |
    172ms
  • 23.129.116.6

    Central New Mexico Electric Cooperative, Inc.

    AS400975

    Albuquerque

    35.0845, -106.6511

    99% uptime

    142ms
    |
    7ms
    |
    179ms
  • 73.228.50.14

    Comcast Cable Communications, LLC

    AS7922

    Albuquerque

    35.0845, -106.6511

    100% uptime

    154ms
    |
    2ms
    |
    301ms
  • 96.92.74.41

    Comcast Cable Communications, LLC

    AS7922

    Albuquerque

    35.0845, -106.6511

    100% uptime

    154ms
    |
    4ms
    |
    228ms
  • 98.60.116.159

    Comcast Cable Communications, LLC

    AS7922

    Albuquerque

    35.0845, -106.6511

    98% uptime

    151ms
    |
    6ms
    |
    319ms
  • 199.21.74.166

    bigbyte.cc Corp

    AS26974

    Albuquerque

    35.0845, -106.6511

    100% uptime

    127ms
    |
    3ms
    |
    175ms
  • 50.84.39.26

    Charter Communications Inc

    AS11427

    Allen

    33.1032, -96.6706

    98% uptime

    140ms
    |
    2ms
    |
    257ms
  • 70.119.105.89

    Charter Communications Inc

    AS11427

    Allen

    33.1032, -96.6706

    100% uptime

    145ms
    |
    11ms
    |
    92ms
  • 207.235.148.155

    Zayo Bandwidth

    AS6461

    Allen

    33.1032, -96.6706

    100% uptime

    125ms
    |
    3ms
    |
    71ms
  • 207.235.148.158

    Zayo Bandwidth

    AS6461

    Allen

    33.1032, -96.6706

    100% uptime

    125ms
    |
    3ms
    |
    72ms
  • 207.235.148.160

    Zayo Bandwidth

    AS6461

    Allen

    33.1032, -96.6706

    100% uptime

    124ms
    |
    3ms
    |
    71ms
  • 207.235.148.161

    Zayo Bandwidth

    AS6461

    Allen

    33.1032, -96.6706

    100% uptime

    125ms
    |
    3ms
    |
    69ms
  • 207.235.148.162

    Zayo Bandwidth

    AS6461

    Allen

    33.1032, -96.6706

    100% uptime

    124ms
    |
    3ms
    |
    68ms
  • 24.96.60.202

    WideOpenWest Finance LLC

    AS12083

    Allen Park

    42.2575, -83.2110

    100% uptime

    121ms
    |
    2ms
    |
    296ms
  • 69.14.119.213

    WideOpenWest Finance LLC

    AS12083

    Allen Park

    42.2575, -83.2110

    96% uptime

    123ms
    |
    3ms
    |
    284ms
  • 24.102.245.46

    PenTeleData Inc.

    AS3737

    Allentown

    40.6084, -75.4902

    100% uptime

    96ms
    |
    3ms
    |
    148ms
  • 24.102.247.140

    PenTeleData Inc.

    AS3737

    Allentown

    40.6084, -75.4902

    98% uptime

    98ms
    |
    2ms
    |
    147ms
  • 24.115.239.193

    PenTeleData Inc.

    AS3737

    Allentown

    40.6084, -75.4902

    96% uptime

    95ms
    |
    2ms
    |
    168ms
  • 64.121.16.24

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    100% uptime

    106ms
    |
    1ms
    |
    166ms
  • 64.121.33.69

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    100% uptime

    108ms
    |
    4ms
    |
    182ms
  • 64.121.38.71

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    98% uptime

    109ms
    |
    2ms
    |
    170ms
  • 64.121.50.223

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    100% uptime

    107ms
    |
    2ms
    |
    162ms
  • 64.121.104.222

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    99% uptime

    107ms
    |
    4ms
    |
    250ms
  • 65.78.90.106

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    100% uptime

    109ms
    |
    3ms
    |
    176ms
  • 131.106.240.71

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    99% uptime

    108ms
    |
    2ms
    |
    188ms
  • 168.91.180.168

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    100% uptime

    106ms
    |
    2ms
    |
    182ms
  • 208.58.16.250

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    98% uptime

    106ms
    |
    0ms
    |
    169ms
  • 208.58.53.237

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    96% uptime

    107ms
    |
    1ms
    |
    50ms
  • 209.122.10.203

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    100% uptime

    112ms
    |
    2ms
    |
    184ms
  • 216.164.168.100

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    100% uptime

    103ms
    |
    1ms
    |
    96ms
  • 216.164.227.199

    RCN

    AS6079

    Allentown

    40.6084, -75.4902

    99% uptime

    113ms
    |
    2ms
    |
    171ms
  • 64.45.190.207

    Alma Telephone Company

    AS397780

    Alma

    39.0953, -93.5452

    100% uptime

    133ms
    |
    6ms
    |
    115ms
  • 64.45.191.51

    Alma Telephone Company

    AS397780

    Alma

    39.0953, -93.5452

    96% uptime

    128ms
    |
    8ms
    |
    84ms
  • 149.137.167.100

    Pioneer Connect

    AS398777

    Alsea

    44.3815, -123.5965

    98% uptime

    163ms
    |
    3ms
    |
    203ms
  • 73.99.23.230

    Comcast Cable Communications, LLC

    AS7922

    Altavista

    37.1118, -79.2856

    100% uptime

    126ms
    |
    18ms
    |
    234ms
  • 24.145.18.41

    Breezeline

    AS11776

    Altoona

    40.5187, -78.3947

    100% uptime

    110ms
    |
    3ms
    |
    203ms
  • 138.207.168.146

    Breezeline

    AS11776

    Altoona

    40.5187, -78.3947

    100% uptime

    103ms
    |
    5ms
    |
    130ms
  • 23.161.240.6

    MORnet Communications, LLC

    AS396860

    Alturas

    27.8717, -81.7151

    98% uptime

    143ms
    |
    3ms
    |
    244ms
  • 12.153.246.226

    AT&T Enterprises, LLC

    AS7018

    Altus

    34.6381, -99.3340

    100% uptime

    148ms
    |
    8ms
    |
    178ms
  • 50.26.72.202

    Optimum

    AS19108

    Amarillo

    35.2220, -101.8313

    96% uptime

    166ms
    |
    4ms
    |
    323ms
  • 67.209.89.172

    Airstream Communications, LLC

    AS11796

    Amery

    45.3069, -92.3621

    98% uptime

    125ms
    |
    2ms
    |
    41ms
  • 23.185.176.124

    Rimrock Wireless

    AS399525

    Ammon

    43.4696, -111.9666

    98% uptime

    154ms
    |
    4ms
    |
    219ms
  • 172.119.115.52

    Charter Communications Inc

    AS20001

    Anaheim

    33.8353, -117.9145

    99% uptime

    175ms
    |
    9ms
    |
    48ms
  • 153.66.1.18

    Space Exploration Technologies Corporation

    AS14593

    Anchorage

    61.2181, -149.9003

    98% uptime

    193ms
    |
    13ms
    |
    141ms
  • 153.66.7.54

    Space Exploration Technologies Corporation

    AS14593

    Anchorage

    61.2181, -149.9003

    100% uptime

    190ms
    |
    8ms
    |
    128ms
  • 179.64.16.234

    Space Exploration Technologies Corporation

    AS14593

    Anchorage

    61.2181, -149.9003

    98% uptime

    190ms
    |
    10ms
    |
    116ms
  • 47.223.242.60

    Optimum

    AS19108

    Andrews

    32.3187, -102.5457

    96% uptime

    158ms
    |
    3ms
    |
    236ms
  • 24.72.180.76

    CABLE ONE, INC.

    AS11492

    Angleton

    29.1694, -95.4319

    98% uptime

    157ms
    |
    5ms
    |
    65ms
  • 162.250.166.142

    NEW KNOXVILLE TELEPHONE COMPANY

    AS31841

    Anna

    40.3945, -84.1727

    98% uptime

    98ms
    |
    6ms
    |
    131ms
  • 68.134.20.202

    Verizon Business

    AS701

    Annapolis

    38.9786, -76.4918

    98% uptime

    106ms
    |
    1ms
    |
    134ms
  • 68.134.20.203

    Verizon Business

    AS701

    Annapolis

    38.9786, -76.4918

    100% uptime

    104ms
    |
    1ms
    |
    135ms
  • 68.134.20.206

    Verizon Business

    AS701

    Annapolis

    38.9786, -76.4918

    100% uptime

    105ms
    |
    1ms
    |
    132ms
  • 23.138.113.251

    Nether.Net

    AS267

    Ann Arbor

    42.2776, -83.7409

    100% uptime

    106ms
    |
    3ms
    |
    77ms
  • 32.143.46.66

    AT&T Enterprises, LLC

    AS7018

    Ann Arbor

    42.2776, -83.7409

    98% uptime

    120ms
    |
    5ms
    |
    119ms
  • 75.144.94.110

    Comcast Cable Communications, LLC

    AS7922

    Ann Arbor

    42.2776, -83.7409

    100% uptime

    127ms
    |
    3ms
    |
    220ms
  • 67.60.140.63

    CABLE ONE, INC.

    AS11492

    Anniston

    33.6598, -85.8316

    100% uptime

    130ms
    |
    2ms
    |
    62ms
  • 98.210.18.106

    Comcast Cable Communications, LLC

    AS7922

    Antioch

    38.0049, -121.8058

    100% uptime

    168ms
    |
    3ms
    |
    297ms
  • 146.113.190.155

    Hotwire Communications

    AS23089

    Apex

    35.7326, -78.8503

    98% uptime

    123ms
    |
    5ms
    |
    260ms
  • 38.83.50.50

    Mojave Communications, Inc.

    AS394107

    Apple Valley

    34.5008, -117.1859

    99% uptime

    171ms
    |
    8ms
    |
    202ms
  • 64.19.104.81

    Dobson Technologies - Transport and Telecom Solutions, LLC

    AS30029

    Arapaho

    35.5778, -98.9645

    100% uptime

    128ms
    |
    2ms
    |
    212ms
  • 64.19.104.137

    Dobson Technologies - Transport and Telecom Solutions, LLC

    AS30029

    Arapaho

    35.5778, -98.9645

    96% uptime

    126ms
    |
    5ms
    |
    212ms
  • 64.19.104.145

    Dobson Technologies - Transport and Telecom Solutions, LLC

    AS30029

    Arapaho

    35.5778, -98.9645

    100% uptime

    128ms
    |
    1ms
    |
    218ms
  • 64.19.105.129

    Dobson Technologies - Transport and Telecom Solutions, LLC

    AS30029

    Arapaho

    35.5778, -98.9645

    100% uptime

    127ms
    |
    2ms
    |
    208ms
  • 64.52.181.72

    Giggle Fiber

    AS26919

    Arcadia

    34.1397, -118.0353

    100% uptime

    152ms
    |
    3ms
    |
    228ms
  • 47.208.111.229

    Optimum

    AS19108

    Arcata

    40.8665, -124.0828

    98% uptime

    181ms
    |
    4ms
    |
    273ms
  • 108.28.48.23

    Verizon Business

    AS701

    Arcola

    38.9518, -77.5342

    96% uptime

    107ms
    |
    1ms
    |
    58ms
  • 12.157.177.250

    AT&T Enterprises, LLC

    AS7018

    Arlington

    32.7357, -97.1081

    100% uptime

    163ms
    |
    3ms
    |
    109ms
  • 12.157.177.251

    AT&T Enterprises, LLC

    AS7018

    Arlington

    32.7357, -97.1081

    100% uptime

    161ms
    |
    33ms
    |
    108ms
  • 130.44.178.19

    RCN

    AS6079

    Arlington

    42.4154, -71.1564

    96% uptime

    106ms
    |
    1ms
    |
    185ms
  • 134.6.121.142

    Granite Telecommunications LLC

    AS16504

    Arlington

    32.7357, -97.1081

    99% uptime

    123ms
    |
    2ms
    |
    274ms
  • 199.219.243.7

    Verizon Business

    AS701

    Arlington

    39.3486, -76.6832

    99% uptime

    112ms
    |
    0ms
    |
    97ms
  • 50.32.7.186

    Frontier Communications of America, Inc.

    AS5650

    Arlington Heights

    40.9901, -75.2163

    100% uptime

    110ms
    |
    2ms
    |
    45ms
  • 69.204.166.80

    Charter Communications Inc

    AS11351

    Arundel

    43.3826, -70.4778

    96% uptime

    120ms
    |
    2ms
    |
    254ms
  • 50.147.134.2

    Comcast Cable Communications, LLC

    AS7922

    Arvada

    39.8028, -105.0875

    99% uptime

    139ms
    |
    6ms
    |
    244ms
  • 76.154.136.211

    Comcast Cable Communications, LLC

    AS7922

    Arvada

    39.8028, -105.0875

    100% uptime

    153ms
    |
    9ms
    |
    172ms
  • 5.161.16.131

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    103ms
    |
    0ms
    |
    124ms
  • 5.161.17.92

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    99% uptime

    101ms
    |
    4ms
    |
    135ms
  • 5.161.17.255

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    101ms
    |
    0ms
    |
    133ms
  • 5.161.23.103

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    103ms
    |
    0ms
    |
    132ms
  • 5.161.46.146

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    101ms
    |
    10ms
    |
    134ms
  • 5.161.46.209

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    103ms
    |
    8ms
    |
    132ms
  • 5.161.47.113

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    103ms
    |
    4ms
    |
    73ms
  • 5.161.50.221

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    103ms
    |
    4ms
    |
    126ms
  • 5.161.56.11

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    103ms
    |
    7ms
    |
    126ms
  • 5.161.58.12

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    103ms
    |
    8ms
    |
    127ms
  • 5.161.62.236

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    101ms
    |
    5ms
    |
    134ms
  • 5.161.66.150

    Hetzner Online GmbH

    AS213230

    Ashburn

    39.0437, -77.4875

    100% uptime

    101ms
    |
    7ms
    |
    130ms