DNS Servers

United States of America 4503 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

  • 50.191.156.177

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    182ms
    |
    2ms
    |
    110ms
  • 50.227.153.206

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    99% uptime

    172ms
    |
    10ms
    |
    96ms
  • 51.81.186.80

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    165ms
    |
    9ms
    |
    328ms
  • 51.81.187.200

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    162ms
    |
    3ms
    |
    110ms
  • 51.81.209.124

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    155ms
    |
    1ms
    |
    174ms
  • 51.81.210.235

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    157ms
    |
    3ms
    |
    182ms
  • 51.81.217.236

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    158ms
    |
    5ms
    |
    252ms
  • 51.81.242.181

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    99% uptime

    161ms
    |
    2ms
    |
    241ms
  • 65.90.11.6

    Gtek Computers LLC

    AS16574

    Portland

    27.8773, -97.3239

    100% uptime

    146ms
    |
    3ms
    |
    206ms
  • 65.155.34.243

    CenturyLink Communications, LLC

    AS209

    Portland

    45.5234, -122.6762

    100% uptime

    169ms
    |
    1ms
    |
    111ms
  • 67.169.213.105

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    185ms
    |
    1ms
    |
    350ms
  • 73.11.111.95

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    182ms
    |
    2ms
    |
    317ms
  • 147.135.36.11

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    99% uptime

    162ms
    |
    3ms
    |
    239ms
  • 147.135.40.4

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    160ms
    |
    2ms
    |
    171ms
  • 174.174.4.21

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    178ms
    |
    2ms
    |
    296ms
  • 174.174.42.61

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    98% uptime

    175ms
    |
    3ms
    |
    287ms
  • 198.0.34.121

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    99% uptime

    182ms
    |
    7ms
    |
    212ms
  • 205.238.26.240

    SCN Research, Inc.

    AS12204

    Portland

    45.5234, -122.6762

    100% uptime

    139ms
    |
    6ms
    |
    150ms
  • 216.151.20.228

    Opus Interactive

    AS14380

    Portland

    45.5234, -122.6762

    88% uptime

    158ms
    |
    0ms
    |
    221ms
  • 24.113.246.117

    Wave Broadband

    AS11404

    Port Orchard

    47.5404, -122.6363

    100% uptime

    169ms
    |
    3ms
    |
    319ms
  • 207.70.246.2

    Sho Me Technologies, LLC

    AS55140

    Potosi

    37.9364, -90.7879

    100% uptime

    114ms
    |
    9ms
    |
    62ms
  • 72.21.76.158

    TCT West, Inc.

    AS4474

    Powell

    44.7538, -108.7574

    100% uptime

    138ms
    |
    3ms
    |
    180ms
  • 64.237.83.127

    REV

    AS5009

    Prairieville

    30.3030, -90.9720

    99% uptime

    134ms
    |
    1ms
    |
    231ms
  • 66.186.252.108

    REV

    AS5009

    Prairieville

    30.3030, -90.9720

    100% uptime

    134ms
    |
    1ms
    |
    231ms
  • 209.124.208.103

    REV

    AS5009

    Prairieville

    30.3030, -90.9720

    100% uptime

    134ms
    |
    0ms
    |
    255ms
  • 24.117.212.185

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    170ms
    |
    2ms
    |
    130ms
  • 96.19.136.209

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    99% uptime

    167ms
    |
    1ms
    |
    86ms
  • 174.126.32.113

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    168ms
    |
    3ms
    |
    63ms
  • 216.152.47.6

    Blast Communications Inc.

    AS26328

    Prestbury

    41.7833, -88.4176

    100% uptime

    113ms
    |
    5ms
    |
    340ms
  • 74.213.193.135

    Emery Telcom

    AS36728

    Price

    39.5994, -110.8107

    100% uptime

    130ms
    |
    1ms
    |
    86ms
  • 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
    |
    213ms
  • 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
    |
    5ms
    |
    124ms
  • 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
    |
    282ms
  • 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
    |
    290ms
  • 67.173.254.125

    Comcast Cable Communications, LLC

    AS7922

    Pueblo

    38.2544, -104.6091

    100% uptime

    155ms
    |
    3ms
    |
    272ms
  • 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
  • 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
  • 66.57.219.34

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    94% uptime

    108ms
    |
    0ms
    |
    54ms
  • 96.10.168.243

    Charter Communications Inc

    AS11426

    Raleigh

    35.7721, -78.6386

    100% uptime

    122ms
    |
    5ms
    |
    90ms
  • 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
    |
    83ms
  • 50.221.152.174

    Comcast Cable Communications, LLC

    AS7922

    Randolph

    42.1626, -71.0412

    100% uptime

    109ms
    |
    0ms
    |
    143ms
  • 66.198.220.119

    Visionary Communications LLC

    AS10835

    Rangely

    40.0875, -108.8048

    88% uptime

    124ms
    |
    1ms
    |
    191ms
  • 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
    |
    173ms
  • 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
    |
    273ms
  • 209.159.239.3

    Clarity Telecom LLC

    AS20412

    Rapid City

    44.0805, -103.2310

    100% uptime

    133ms
    |
    1ms
    |
    268ms
  • 173.163.12.161

    Comcast Cable Communications, LLC

    AS7922

    Reading

    40.3357, -75.9269

    98% uptime

    130ms
    |
    10ms
    |
    254ms
  • 204.89.160.34

    Cinch Software, LLC

    AS394815

    Reading

    40.3357, -75.9269

    100% uptime

    98ms
    |
    0ms
    |
    49ms
  • 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
    |
    50ms
  • 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
  • 204.89.160.86

    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
    |
    53ms
  • 69.14.66.245

    WideOpenWest Finance LLC

    AS12083

    Redford

    42.3834, -83.2966

    100% uptime

    130ms
    |
    2ms
    |
    216ms
  • 50.175.70.1

    Comcast Cable Communications, LLC

    AS7922

    Redmond

    47.6740, -122.1215

    100% uptime

    170ms
    |
    0ms
    |
    141ms
  • 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
    |
    193ms
  • 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
    |
    4ms
    |
    313ms
  • 162.210.104.17

    Sky Fiber Internet

    AS32212

    Reno

    39.5296, -119.8138

    94% uptime

    168ms
    |
    8ms
    |
    193ms
  • 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
    |
    168ms
  • 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
    |
    187ms
  • 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
    |
    1ms
    |
    199ms
  • 192.46.219.231

    Akamai Connected Cloud

    AS63949

    Richardson

    32.9482, -96.7297

    100% uptime

    135ms
    |
    1ms
    |
    47ms