DNS Servers

United States of America 4281 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

  • 45.76.3.250

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    103ms
  • 45.76.9.87

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    99% uptime

    84ms
    |
    2ms
    |
    101ms
  • 45.76.11.208

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    182ms
  • 45.76.165.223

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    67ms
  • 64.176.198.77

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    47ms
  • 64.237.48.135

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    98% uptime

    84ms
    |
    2ms
    |
    46ms
  • 66.55.159.15

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    99% uptime

    84ms
    |
    2ms
    |
    46ms
  • 66.135.0.138

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    45ms
  • 66.135.10.185

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    126ms
  • 66.135.17.234

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    48ms
  • 66.135.18.197

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    160ms
  • 66.135.20.137

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    95% uptime

    85ms
    |
    2ms
    |
    52ms
  • 66.135.24.130

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    40ms
  • 66.135.27.9

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    40ms
  • 66.135.30.71

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    95% uptime

    86ms
    |
    2ms
    |
    30ms
  • 104.156.224.58

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    45ms
  • 104.156.251.76

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    23ms
  • 104.243.43.15

    ReliableSite.Net LLC

    AS23470

    Piscataway

    40.4993, -74.3990

    100% uptime

    91ms
    |
    0ms
    |
    134ms
  • 108.61.54.119

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    104ms
  • 108.61.158.186

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    99% uptime

    85ms
    |
    2ms
    |
    105ms
  • 108.61.191.166

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    47ms
  • 140.82.9.169

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    87ms
    |
    2ms
    |
    43ms
  • 149.28.45.57

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    45ms
  • 149.28.49.160

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    45ms
  • 149.28.61.242

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    104ms
  • 149.28.231.135

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    17ms
  • 149.28.236.252

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    98% uptime

    84ms
    |
    2ms
    |
    156ms
  • 173.199.127.44

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    12ms
  • 199.127.61.57

    ReliableSite.Net LLC

    AS23470

    Piscataway

    40.4993, -74.3990

    100% uptime

    96ms
    |
    0ms
    |
    110ms
  • 207.148.25.100

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    87ms
  • 207.246.94.157

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    99% uptime

    85ms
    |
    3ms
    |
    99ms
  • 207.246.122.114

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    87ms
    |
    3ms
    |
    176ms
  • 208.167.225.22

    The Constant Company, LLC

    AS46407

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    103ms
  • 216.155.135.184

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    46ms
  • 24.3.139.177

    Comcast Cable Communications, LLC

    AS7922

    Pittsburgh

    40.4406, -79.9959

    100% uptime

    126ms
    |
    2ms
    |
    203ms
  • 64.58.244.210

    DQE Communications LLC

    AS33154

    Pittsburgh

    40.4406, -79.9959

    100% uptime

    110ms
    |
    2ms
    |
    93ms
  • 67.163.129.204

    Comcast Cable Communications, LLC

    AS7922

    Pittsburgh

    40.4406, -79.9959

    95% uptime

    127ms
    |
    2ms
    |
    220ms
  • 67.163.131.153

    Comcast Cable Communications, LLC

    AS7922

    Pittsburgh

    40.4406, -79.9959

    95% uptime

    126ms
    |
    3ms
    |
    225ms
  • 96.66.171.211

    Comcast Cable Communications, LLC

    AS7922

    Pittsburgh

    40.4406, -79.9959

    98% uptime

    122ms
    |
    10ms
    |
    218ms
  • 98.236.58.199

    Comcast Cable Communications, LLC

    AS7922

    Pittsburgh

    40.4406, -79.9959

    95% uptime

    126ms
    |
    2ms
    |
    216ms
  • 173.246.253.176

    Zito Media, L.P.

    AS26801

    Pittsburgh

    40.4406, -79.9959

    98% uptime

    99ms
    |
    3ms
    |
    188ms
  • 173.246.253.184

    Zito Media, L.P.

    AS26801

    Pittsburgh

    40.4406, -79.9959

    95% uptime

    102ms
    |
    0ms
    |
    213ms
  • 50.75.30.228

    Charter Communications Inc

    AS11351

    Pittsfield

    42.4501, -73.2454

    100% uptime

    110ms
    |
    0ms
    |
    73ms
  • 199.204.86.133

    Metronet

    AS30600

    Plainfield

    41.6270, -88.2040

    99% uptime

    127ms
    |
    9ms
    |
    98ms
  • 24.173.184.122

    Charter Communications Inc

    AS11427

    Plano

    33.0198, -96.6989

    100% uptime

    128ms
    |
    1ms
    |
    38ms
  • 66.38.122.242

    NORTH CENTRAL TELEPHONE COOPERATIVE CORPORATION

    AS16433

    Plano

    36.8803, -86.4183

    100% uptime

    114ms
    |
    13ms
    |
    86ms
  • 104.226.188.90

    Frontier Communications of America, Inc.

    AS5650

    Plano

    33.0198, -96.6989

    99% uptime

    103ms
    |
    1ms
    |
    91ms
  • 24.176.141.65

    Charter Communications LLC

    AS20115

    Plattsburgh

    44.6995, -73.4529

    100% uptime

    132ms
    |
    11ms
    |
    66ms
  • 67.188.23.243

    Comcast Cable Communications, LLC

    AS7922

    Pleasant Hill

    37.9480, -122.0608

    100% uptime

    178ms
    |
    2ms
    |
    46ms
  • 205.210.19.147

    Coeur d' Alene Tribe

    AS1052

    Plummer

    47.3352, -116.8885

    100% uptime

    154ms
    |
    0ms
    |
    235ms
  • 63.40.27.38

    Verizon Business

    AS6167

    Plymouth Meeting

    40.1023, -75.2743

    100% uptime

    219ms
    |
    75ms
    |
    373ms
  • 67.60.59.9

    CABLE ONE, INC.

    AS11492

    Pocatello

    42.8713, -112.4455

    99% uptime

    188ms
    |
    7ms
    |
    157ms
  • 184.155.37.38

    CABLE ONE, INC.

    AS11492

    Pocatello

    42.8713, -112.4455

    99% uptime

    205ms
    |
    11ms
    |
    97ms
  • 217.177.155.175

    CABLE ONE, INC.

    AS11492

    Poplar Bluff

    36.7570, -90.3929

    100% uptime

    154ms
    |
    2ms
    |
    74ms
  • 15.204.7.110

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    154ms
    |
    3ms
    |
    340ms
  • 15.204.47.68

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    162ms
    |
    5ms
    |
    300ms
  • 15.204.60.57

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    162ms
    |
    3ms
    |
    111ms
  • 15.204.65.96

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    158ms
    |
    2ms
    |
    79ms
  • 15.204.88.44

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    159ms
    |
    4ms
    |
    109ms
  • 15.204.90.169

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    154ms
    |
    2ms
    |
    242ms
  • 15.204.91.76

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    95% uptime

    160ms
    |
    1ms
    |
    246ms
  • 15.204.91.210

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    95% uptime

    162ms
    |
    2ms
    |
    260ms
  • 15.204.107.159

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    159ms
    |
    4ms
    |
    297ms
  • 15.204.117.157

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    155ms
    |
    14ms
    |
    172ms
  • 50.173.17.163

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    173ms
    |
    0ms
    |
    287ms
  • 50.173.40.162

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    99% uptime

    184ms
    |
    3ms
    |
    99ms
  • 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
    |
    327ms
  • 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
    |
    208ms
  • 205.238.26.240

    SCN Research, Inc.

    AS12204

    Portland

    45.5234, -122.6762

    100% uptime

    139ms
    |
    5ms
    |
    150ms
  • 216.151.20.228

    Opus Interactive

    AS14380

    Portland

    45.5234, -122.6762

    89% uptime

    158ms
    |
    0ms
    |
    221ms
  • 207.70.246.2

    Sho Me Technologies, LLC

    AS55140

    Potosi

    37.9364, -90.7879

    100% uptime

    114ms
    |
    9ms
    |
    63ms
  • 72.21.76.158

    TCT West, Inc.

    AS4474

    Powell

    44.7538, -108.7574

    100% uptime

    138ms
    |
    4ms
    |
    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
    |
    88ms
  • 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
    |
    87ms
  • 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
    |
    214ms
  • 24.249.209.154

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    100% uptime

    106ms
    |
    0ms
    |
    100ms
  • 98.175.201.90

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    98% uptime

    110ms
    |
    0ms
    |
    51ms
  • 128.254.209.141

    STRATA NETWORKS

    AS30432

    Providence

    41.7063, -111.8172

    100% uptime

    142ms
    |
    6ms
    |
    124ms