DNS Servers

United States of America 4294 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

  • 66.135.27.9

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    43ms
  • 104.156.224.58

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    52ms
  • 104.156.225.101

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    48ms
  • 104.156.250.90

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    48ms
  • 104.156.251.76

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    99% uptime

    84ms
    |
    2ms
    |
    30ms
  • 104.194.10.27

    ReliableSite.Net LLC

    AS23470

    Piscataway

    40.4993, -74.3990

    100% uptime

    91ms
    |
    1ms
    |
    133ms
  • 104.243.32.253

    ReliableSite.Net LLC

    AS23470

    Piscataway

    40.4993, -74.3990

    98% uptime

    91ms
    |
    0ms
    |
    135ms
  • 108.61.3.4

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    103ms
  • 108.61.54.119

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    101ms
  • 108.61.70.143

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    89ms
    |
    2ms
    |
    48ms
  • 108.61.158.186

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    104ms
  • 140.82.9.169

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    60ms
  • 140.82.45.97

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    3ms
    |
    51ms
  • 149.28.45.57

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    56ms
  • 149.28.49.160

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    49ms
  • 149.28.61.242

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    108ms
  • 149.28.231.135

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    99% uptime

    85ms
    |
    2ms
    |
    25ms
  • 149.28.236.252

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    3ms
    |
    107ms
  • 173.199.123.18

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    98% uptime

    85ms
    |
    2ms
    |
    48ms
  • 173.199.127.44

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    11ms
  • 185.150.189.52

    ReliableSite.Net LLC

    AS23470

    Piscataway

    40.4993, -74.3990

    100% uptime

    96ms
    |
    0ms
    |
    63ms
  • 199.127.61.57

    ReliableSite.Net LLC

    AS23470

    Piscataway

    40.4993, -74.3990

    100% uptime

    96ms
    |
    0ms
    |
    108ms
  • 207.148.25.100

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    87ms
  • 207.246.90.39

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    98% uptime

    85ms
    |
    2ms
    |
    98ms
  • 207.246.94.157

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    3ms
    |
    99ms
  • 207.246.121.77

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    98% uptime

    85ms
    |
    2ms
    |
    70ms
  • 207.246.122.114

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    98ms
  • 208.167.225.22

    The Constant Company, LLC

    AS46407

    Piscataway

    40.4993, -74.3990

    100% uptime

    84ms
    |
    2ms
    |
    103ms
  • 208.167.255.26

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    100% uptime

    85ms
    |
    2ms
    |
    46ms
  • 216.155.135.184

    The Constant Company, LLC

    AS20473

    Piscataway

    40.4993, -74.3990

    99% uptime

    84ms
    |
    2ms
    |
    42ms
  • 73.223.49.102

    Comcast Cable Communications, LLC

    AS7922

    Pittsburg

    38.0280, -121.8847

    98% uptime

    172ms
    |
    3ms
    |
    326ms
  • 24.104.33.105

    Comcast Cable Communications, LLC

    AS7922

    Pittsburgh

    40.4406, -79.9959

    100% uptime

    118ms
    |
    0ms
    |
    50ms
  • 64.58.244.210

    DQE Communications LLC

    AS33154

    Pittsburgh

    40.4406, -79.9959

    99% uptime

    110ms
    |
    9ms
    |
    109ms
  • 50.75.30.228

    Charter Communications Inc

    AS11351

    Pittsfield

    42.4501, -73.2454

    100% uptime

    110ms
    |
    2ms
    |
    91ms
  • 70.21.190.53

    Verizon Business

    AS701

    Plainfield

    40.6337, -74.4074

    100% uptime

    105ms
    |
    1ms
    |
    23ms
  • 199.204.86.133

    Metronet

    AS30600

    Plainfield

    41.6270, -88.2040

    100% uptime

    127ms
    |
    15ms
    |
    54ms
  • 24.173.184.122

    Charter Communications Inc

    AS11427

    Plano

    33.0198, -96.6989

    99% uptime

    131ms
    |
    1ms
    |
    39ms
  • 97.77.234.51

    Charter Communications Inc

    AS11427

    Plano

    33.0198, -96.6989

    100% uptime

    135ms
    |
    1ms
    |
    232ms
  • 104.226.188.90

    Frontier Communications of America, Inc.

    AS5650

    Plano

    33.0198, -96.6989

    98% uptime

    104ms
    |
    4ms
    |
    101ms
  • 134.56.18.166

    Hotwire Communications

    AS23089

    Plant City

    28.0189, -82.1147

    98% uptime

    134ms
    |
    3ms
    |
    182ms
  • 24.176.141.65

    Charter Communications LLC

    AS20115

    Plattsburgh

    44.6995, -73.4529

    100% uptime

    132ms
    |
    7ms
    |
    65ms
  • 67.188.23.243

    Comcast Cable Communications, LLC

    AS7922

    Pleasant Hill

    37.9480, -122.0608

    99% uptime

    177ms
    |
    2ms
    |
    41ms
  • 68.129.129.138

    Verizon Business

    AS701

    Pleasantville

    41.1329, -73.7926

    100% uptime

    107ms
    |
    1ms
    |
    115ms
  • 75.86.138.58

    Charter Communications Inc

    AS10796

    Plymouth

    43.7486, -87.9770

    98% uptime

    129ms
    |
    2ms
    |
    153ms
  • 96.78.73.89

    Comcast Cable Communications, LLC

    AS7922

    Plymouth

    45.0105, -93.4555

    100% uptime

    127ms
    |
    8ms
    |
    128ms
  • 67.61.115.160

    CABLE ONE, INC.

    AS11492

    Ponca City

    36.7070, -97.0856

    100% uptime

    150ms
    |
    3ms
    |
    119ms
  • 204.116.176.58

    Clearwave Fiber

    AS400511

    Pooler

    32.1155, -81.2471

    98% uptime

    133ms
    |
    4ms
    |
    179ms
  • 204.184.58.175

    University of Missouri - dba the Missouri Research and Education Network (MOREnet)

    AS2572

    Poplar Bluff

    36.7570, -90.3929

    100% uptime

    127ms
    |
    4ms
    |
    165ms
  • 15.204.7.110

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    99% uptime

    152ms
    |
    4ms
    |
    266ms
  • 15.204.43.149

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    163ms
    |
    5ms
    |
    247ms
  • 15.204.47.68

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    99% uptime

    160ms
    |
    3ms
    |
    297ms
  • 15.204.60.57

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    154ms
    |
    4ms
    |
    122ms
  • 15.204.65.96

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    161ms
    |
    4ms
    |
    72ms
  • 15.204.90.169

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    161ms
    |
    4ms
    |
    248ms
  • 15.204.107.159

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    99% uptime

    156ms
    |
    3ms
    |
    291ms
  • 15.204.117.157

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    156ms
    |
    3ms
    |
    166ms
  • 50.145.240.51

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    172ms
    |
    2ms
    |
    207ms
  • 50.191.156.177

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    177ms
    |
    11ms
    |
    114ms
  • 50.227.153.206

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    171ms
    |
    3ms
    |
    86ms
  • 51.81.186.80

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    161ms
    |
    3ms
    |
    326ms
  • 51.81.187.200

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    100% uptime

    157ms
    |
    4ms
    |
    115ms
  • 51.81.209.126

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    98% uptime

    159ms
    |
    4ms
    |
    114ms
  • 51.81.210.235

    OVH SAS

    AS16276

    Portland

    45.5234, -122.6762

    98% uptime

    160ms
    |
    3ms
    |
    171ms
  • 65.90.11.6

    Gtek Computers LLC

    AS16574

    Portland

    27.8773, -97.3239

    99% uptime

    147ms
    |
    2ms
    |
    213ms
  • 65.155.34.243

    CenturyLink Communications, LLC

    AS209

    Portland

    45.5234, -122.6762

    100% uptime

    168ms
    |
    13ms
    |
    110ms
  • 67.168.246.214

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    180ms
    |
    3ms
    |
    286ms
  • 67.189.80.220

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    98% uptime

    182ms
    |
    4ms
    |
    312ms
  • 71.237.255.246

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    176ms
    |
    4ms
    |
    346ms
  • 71.238.28.70

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    98% uptime

    178ms
    |
    3ms
    |
    284ms
  • 73.11.37.185

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    98% uptime

    182ms
    |
    2ms
    |
    315ms
  • 73.11.111.95

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    98% uptime

    179ms
    |
    5ms
    |
    321ms
  • 73.11.118.182

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    178ms
    |
    2ms
    |
    319ms
  • 73.96.45.32

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    181ms
    |
    4ms
    |
    313ms
  • 73.96.236.254

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    100% uptime

    179ms
    |
    10ms
    |
    321ms
  • 73.240.180.109

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    98% uptime

    182ms
    |
    3ms
    |
    306ms
  • 76.105.242.49

    Comcast Cable Communications, LLC

    AS7922

    Portland

    45.5234, -122.6762

    96% uptime

    181ms
    |
    4ms
    |
    299ms
  • 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
    |
    311ms
  • 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

    140ms
    |
    9ms
    |
    294ms
  • 207.70.246.2

    Sho Me Technologies, LLC

    AS55140

    Potosi

    37.9364, -90.7879

    99% uptime

    111ms
    |
    7ms
    |
    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

    134ms
    |
    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
    |
    124ms
  • 66.164.83.33

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    167ms
    |
    2ms
    |
    280ms
  • 66.164.134.254

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    96% uptime

    164ms
    |
    2ms
    |
    76ms
  • 67.60.109.231

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    98% uptime

    166ms
    |
    11ms
    |
    279ms
  • 67.61.88.118

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    165ms
    |
    3ms
    |
    59ms
  • 96.19.136.209

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    100% uptime

    167ms
    |
    2ms
    |
    128ms
  • 174.126.32.113

    CABLE ONE, INC.

    AS11492

    Prescott

    34.5400, -112.4685

    99% 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

    115ms
    |
    7ms
    |
    78ms
  • 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
    |
    166ms
  • 98.175.201.90

    Cox Communications Inc.

    AS22773

    Providence

    41.8240, -71.4128

    100% uptime

    110ms
    |
    1ms
    |
    74ms