DNS Servers

United States of America 4604 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

  • 209.113.174.30

    Metro Communications Company, Inc.

    AS53610

    Princeton

    41.3681, -89.4648

    100% uptime

    129ms
    |
    1ms
    |
    164ms
  • 24.112.177.150

    Armstrong

    AS27364

    Proctorville

    38.4370, -82.3771

    100% uptime

    134ms
    |
    2ms
    |
    212ms
  • 24.249.209.154

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    100% uptime

    106ms
    |
    0ms
    |
    101ms
  • 98.175.201.90

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    98% uptime

    110ms
    |
    0ms
    |
    50ms
  • 128.254.209.141

    STRATA NETWORKS

    AS30432

    Providence

    41.7063, -111.8172

    100% uptime

    142ms
    |
    4ms
    |
    100ms
  • 174.77.113.66

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    99% uptime

    107ms
    |
    0ms
    |
    122ms
  • 97.75.184.70

    FirstDigital Communications, LLC

    AS13415

    Provo

    40.2338, -111.6585

    100% uptime

    140ms
    |
    8ms
    |
    196ms
  • 136.42.25.22

    Google Fiber Inc.

    AS16591

    Provo

    40.2338, -111.6585

    99% uptime

    164ms
    |
    6ms
    |
    138ms
  • 162.240.145.251

    Unified Layer

    AS46606

    Provo

    40.2338, -111.6585

    99% uptime

    148ms
    |
    3ms
    |
    281ms
  • 162.240.146.187

    Unified Layer

    AS46606

    Provo

    40.2338, -111.6585

    98% uptime

    147ms
    |
    2ms
    |
    278ms
  • 162.240.230.236

    Unified Layer

    AS46606

    Provo

    40.2338, -111.6585

    99% uptime

    148ms
    |
    2ms
    |
    287ms
  • 67.173.254.125

    Comcast Cable Communications, LLC

    AS7922

    Pueblo

    38.2544, -104.6091

    100% uptime

    155ms
    |
    3ms
    |
    270ms
  • 73.181.27.109

    Comcast Cable Communications, LLC

    AS7922

    Pueblo

    38.2544, -104.6091

    100% uptime

    158ms
    |
    2ms
    |
    296ms
  • 73.254.184.199

    Comcast Cable Communications, LLC

    AS7922

    Puyallup

    47.1854, -122.2929

    98% uptime

    182ms
    |
    10ms
    |
    163ms
  • 66.226.125.90

    Adams TelSystems, Inc.

    AS12033

    Quincy

    39.9356, -91.4099

    100% uptime

    107ms
    |
    0ms
    |
    65ms
  • 206.130.133.62

    Ziply Fiber

    AS13370

    Quincy

    47.2343, -119.8525

    99% uptime

    150ms
    |
    5ms
    |
    88ms
  • 12.179.218.13

    AT&T Enterprises, LLC

    AS7018

    Ragland

    33.7445, -86.1558

    100% uptime

    125ms
    |
    2ms
    |
    157ms
  • 216.176.96.248

    RTC Communications

    AS14574

    Raglesville

    38.8034, -86.9614

    100% uptime

    107ms
    |
    1ms
    |
    77ms
  • 4.43.170.245

    Level 3 Parent, LLC

    AS3356

    Raleigh

    35.7721, -78.6386

    100% uptime

    111ms
    |
    3ms
    |
    95ms
  • 12.0.150.131

    AT&T Enterprises, LLC

    AS7018

    Raleigh

    35.7721, -78.6386

    100% uptime

    119ms
    |
    1ms
    |
    88ms
  • 24.163.54.130

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    100% uptime

    123ms
    |
    12ms
    |
    242ms
  • 65.190.102.210

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    100% uptime

    124ms
    |
    2ms
    |
    139ms
  • 96.10.168.243

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    100% uptime

    122ms
    |
    5ms
    |
    92ms
  • 136.56.15.69

    Google Fiber Inc.

    AS16591

    Raleigh

    35.7721, -78.6386

    99% uptime

    120ms
    |
    2ms
    |
    97ms
  • 104.153.154.147

    CONVERGEONE HOLDINGS, INC.

    AS27580

    Rancho Cucamonga

    34.1064, -117.5931

    99% uptime

    165ms
    |
    7ms
    |
    202ms
  • 68.225.25.164

    Cox Communications Inc.

    AS22773

    Rancho Santa Margarita

    33.6409, -117.6031

    99% uptime

    180ms
    |
    6ms
    |
    226ms
  • 98.164.209.187

    Cox Communications Inc.

    AS22773

    Rancho Santa Margarita

    33.6409, -117.6031

    94% uptime

    178ms
    |
    2ms
    |
    48ms
  • 216.231.21.99

    Cox Communications Inc.

    AS22773

    Rancho Santa Margarita

    33.6409, -117.6031

    100% uptime

    170ms
    |
    2ms
    |
    84ms
  • 50.221.152.174

    Comcast Cable Communications, LLC

    AS7922

    Randolph

    42.1626, -71.0412

    100% uptime

    109ms
    |
    0ms
    |
    131ms
  • 66.198.220.119

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    88% uptime

    124ms
    |
    1ms
    |
    192ms
  • 66.198.221.147

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    99% uptime

    125ms
    |
    10ms
    |
    172ms
  • 66.198.221.223

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    98% uptime

    125ms
    |
    7ms
    |
    170ms
  • 66.198.222.23

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    98% uptime

    125ms
    |
    6ms
    |
    166ms
  • 192.35.200.26

    Metro Communications Company, Inc.

    AS53610

    Rantoul

    40.3084, -88.1559

    94% uptime

    122ms
    |
    0ms
    |
    71ms
  • 64.179.137.42

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    132ms
    |
    1ms
    |
    229ms
  • 64.179.160.90

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    134ms
    |
    2ms
    |
    274ms
  • 209.159.239.3

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    133ms
    |
    1ms
    |
    275ms
  • 173.163.12.161

    Comcast Cable Communications, LLC

    AS7922

    Reading

    40.3357, -75.9269

    98% uptime

    129ms
    |
    10ms
    |
    256ms
  • 204.89.160.34

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    98ms
    |
    0ms
    |
    51ms
  • 204.89.160.37

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    100ms
    |
    0ms
    |
    50ms
  • 204.89.160.40

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    98ms
    |
    12ms
    |
    50ms
  • 204.89.160.41

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    99% uptime

    101ms
    |
    1ms
    |
    48ms
  • 204.89.160.44

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    98ms
    |
    1ms
    |
    48ms
  • 204.89.160.47

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    99% uptime

    100ms
    |
    1ms
    |
    51ms
  • 204.89.160.48

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    99% uptime

    99ms
    |
    0ms
    |
    49ms
  • 204.89.160.68

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    99% uptime

    97ms
    |
    2ms
    |
    53ms
  • 204.89.160.82

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    99ms
    |
    1ms
    |
    51ms
  • 204.89.160.85

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    100ms
    |
    0ms
    |
    50ms
  • 204.89.160.86

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    97ms
    |
    1ms
    |
    60ms
  • 204.89.160.100

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    98% uptime

    97ms
    |
    1ms
    |
    54ms
  • 69.14.66.245

    WideOpenWest Finance LLC

    AS12083

    Redford

    42.3834, -83.2966

    100% uptime

    130ms
    |
    2ms
    |
    218ms
  • 50.34.67.29

    Wholesail networks LLC

    AS20055

    Redmond

    47.6740, -122.1215

    100% uptime

    147ms
    |
    0ms
    |
    123ms
  • 50.175.70.1

    Comcast Cable Communications, LLC

    AS7922

    Redmond

    47.6740, -122.1215

    100% uptime

    170ms
    |
    0ms
    |
    143ms
  • 167.142.190.106

    Aureon Network Services

    AS5056

    Red Oak

    41.0097, -95.2255

    100% uptime

    112ms
    |
    17ms
    |
    168ms
  • 45.61.58.140

    Kamatera, Inc.

    AS36007

    Redondo Beach

    33.8707, -118.3715

    100% uptime

    170ms
    |
    4ms
    |
    194ms
  • 199.255.23.57

    Reedsburg Utility Commission

    AS62759

    Reedsburg

    43.5325, -90.0026

    100% uptime

    125ms
    |
    1ms
    |
    66ms
  • 75.38.108.127

    AT&T Enterprises, LLC

    AS7018

    Reno

    39.5296, -119.8138

    99% uptime

    176ms
    |
    15ms
    |
    166ms
  • 75.141.253.76

    Charter Communications LLC

    AS20115

    Reno

    39.5296, -119.8138

    100% uptime

    196ms
    |
    3ms
    |
    312ms
  • 162.210.104.17

    Sky Fiber Internet

    AS32212

    Reno

    39.5296, -119.8138

    94% uptime

    168ms
    |
    8ms
    |
    192ms
  • 135.148.144.70

    OVH SAS

    AS16276

    Reston

    38.9687, -77.3411

    100% uptime

    92ms
    |
    0ms
    |
    122ms
  • 192.110.255.55

    Deteque

    AS54054

    Reston

    38.9687, -77.3411

    100% uptime

    90ms
    |
    1ms
    |
    104ms
  • 45.27.156.140

    AT&T Enterprises, LLC

    AS7018

    Richardson

    32.9482, -96.7297

    98% uptime

    140ms
    |
    11ms
    |
    77ms
  • 45.33.7.109

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    99% uptime

    136ms
    |
    1ms
    |
    167ms
  • 45.33.118.150

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    136ms
    |
    0ms
    |
    164ms
  • 45.56.73.107

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    135ms
    |
    1ms
    |
    73ms
  • 50.116.18.154

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    136ms
    |
    0ms
    |
    148ms
  • 50.116.21.40

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    99% uptime

    136ms
    |
    1ms
    |
    17ms
  • 68.251.97.153

    AT&T Enterprises, LLC

    AS7018

    Richardson

    32.9482, -96.7297

    100% uptime

    139ms
    |
    1ms
    |
    189ms
  • 69.164.202.157

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    94% uptime

    136ms
    |
    0ms
    |
    156ms
  • 70.116.136.130

    Charter Communications Inc

    AS11427

    Richardson

    32.9482, -96.7297

    100% uptime

    131ms
    |
    0ms
    |
    162ms
  • 72.14.189.183

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    94% uptime

    136ms
    |
    1ms
    |
    153ms
  • 104.61.59.92

    AT&T Enterprises, LLC

    AS7018

    Richardson

    32.9482, -96.7297

    99% uptime

    134ms
    |
    1ms
    |
    152ms
  • 104.200.21.150

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    133ms
    |
    0ms
    |
    200ms
  • 192.46.219.231

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    135ms
    |
    1ms
    |
    48ms
  • 98.100.47.98

    Charter Communications Inc

    AS10796

    Richfield

    41.2398, -81.6382

    94% uptime

    121ms
    |
    1ms
    |
    113ms
  • 4.28.226.157

    Level 3 Parent, LLC

    AS3356

    Richmond

    37.5538, -77.4603

    99% uptime

    102ms
    |
    2ms
    |
    77ms
  • 50.242.44.45

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.5538, -77.4603

    94% uptime

    133ms
    |
    4ms
    |
    242ms
  • 76.190.62.98

    Charter Communications Inc

    AS10796

    Richmond

    37.7479, -84.2947

    100% uptime

    131ms
    |
    2ms
    |
    114ms
  • 173.53.55.101

    Verizon Business

    AS701

    Richmond

    37.5538, -77.4603

    100% uptime

    112ms
    |
    1ms
    |
    98ms
  • 173.164.192.82

    Comcast Cable Communications, LLC

    AS7922

    Richmond

    37.9358, -122.3478

    88% uptime

    173ms
    |
    71ms
    |
    154ms
  • 173.235.58.66

    C Spire Fiber

    AS11272

    Ridgeland

    32.4285, -90.1323

    94% uptime

    116ms
    |
    2ms
    |
    111ms
  • 24.116.102.199

    CABLE ONE, INC.

    AS11492

    Rio Rancho

    35.2334, -106.6645

    99% uptime

    184ms
    |
    3ms
    |
    71ms
  • 159.118.245.196

    CABLE ONE, INC.

    AS11492

    Rio Rancho

    35.2334, -106.6645

    98% uptime

    178ms
    |
    8ms
    |
    105ms
  • 173.207.53.42

    CABLE ONE, INC.

    AS11492

    Rio Rancho

    35.2334, -106.6645

    99% uptime

    175ms
    |
    7ms
    |
    90ms
  • 173.207.115.237

    CABLE ONE, INC.

    AS11492

    Rio Rancho

    35.2334, -106.6645

    99% uptime

    178ms
    |
    3ms
    |
    73ms
  • 89.116.108.7

    Datapro Telecom Solutions LLC

    AS27347

    River Edge

    40.9287, -74.0399

    100% uptime

    96ms
    |
    0ms
    |
    24ms
  • 89.116.108.133

    Datapro Telecom Solutions LLC

    AS27347

    River Edge

    40.9287, -74.0399

    100% uptime

    96ms
    |
    0ms
    |
    37ms
  • 89.116.108.134

    Datapro Telecom Solutions LLC

    AS27347

    River Edge

    40.9287, -74.0399

    100% uptime

    95ms
    |
    0ms
    |
    38ms
  • 140.106.33.228

    Pierce Pepin Cooperative Services

    AS400268

    River Falls

    44.8614, -92.6238

    100% uptime

    123ms
    |
    1ms
    |
    164ms
  • 75.127.218.90

    Cablevision Systems Corp.

    AS6128

    Riverhead

    40.9170, -72.6620

    100% uptime

    100ms
    |
    1ms
    |
    117ms
  • 71.9.34.71

    Charter Communications LLC

    AS20115

    Riverside

    33.9534, -117.3962

    99% uptime

    176ms
    |
    3ms
    |
    252ms
  • 137.27.231.253

    Charter Communications LLC

    AS20115

    Riverside

    33.9534, -117.3962

    94% uptime

    183ms
    |
    3ms
    |
    152ms
  • 162.255.35.62

    GeoLinks

    AS54483

    Riverside

    33.9534, -117.3962

    100% uptime

    171ms
    |
    3ms
    |
    133ms
  • 199.191.108.20

    Block Line Systems, LLC

    AS26076

    Robbinsville

    40.2146, -74.6193

    100% uptime

    86ms
    |
    0ms
    |
    113ms
  • 129.21.215.58

    Rochester Institute of Technology

    AS4385

    Rochester

    43.1548, -77.6156

    100% uptime

    92ms
    |
    3ms
    |
    119ms
  • 23.137.168.34

    Stalwart Wireless

    AS916

    Rock Creek

    45.7575, -92.9624

    100% uptime

    123ms
    |
    1ms
    |
    118ms
  • 208.104.254.240

    Comporium, Inc

    AS14615

    Rock Hill

    34.9249, -81.0251

    100% uptime

    117ms
    |
    1ms
    |
    38ms
  • 192.81.39.48

    Access Cable Television, Inc.

    AS30091

    Rockholds

    36.8287, -84.1163

    99% uptime

    141ms
    |
    18ms
    |
    104ms
  • 104.220.12.76

    Wave Broadband

    AS11404

    Rocklin

    38.7907, -121.2358

    99% uptime

    170ms
    |
    2ms
    |
    47ms
  • 50.224.64.49

    Comcast Cable Communications, LLC

    AS7922

    Rockville

    39.0840, -77.1528

    100% uptime

    111ms
    |
    0ms
    |
    245ms