DNS Servers

United States of America 4613 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

  • 15.204.228.131

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    20ms
  • 15.204.233.167

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    124ms
  • 15.204.245.78

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    92ms
    |
    0ms
    |
    120ms
  • 20.85.230.145

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    93ms
    |
    3ms
    |
    125ms
  • 20.231.99.82

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    94ms
    |
    0ms
    |
    124ms
  • 20.231.193.95

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    94ms
    |
    1ms
    |
    108ms
  • 23.142.144.7

    Joscor LLC

    AS398031

    Washington

    38.8951, -77.0364

    98% uptime

    96ms
    |
    1ms
    |
    46ms
  • 38.15.246.109

    Starry, Inc.

    AS395354

    Washington

    38.8951, -77.0364

    100% uptime

    110ms
    |
    20ms
    |
    46ms
  • 38.54.7.69

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    99% uptime

    89ms
    |
    1ms
    |
    18ms
  • 38.54.7.70

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    99% uptime

    89ms
    |
    1ms
    |
    22ms
  • 38.54.7.72

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    98% uptime

    89ms
    |
    4ms
    |
    19ms
  • 38.54.7.74

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    99% uptime

    89ms
    |
    1ms
    |
    18ms
  • 38.54.7.75

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    99% uptime

    89ms
    |
    1ms
    |
    18ms
  • 38.54.7.76

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    99% uptime

    89ms
    |
    1ms
    |
    19ms
  • 38.54.7.77

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    26ms
  • 38.54.7.78

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    18ms
  • 38.54.7.80

    Kaopu Cloud HK Limited

    AS138915

    Washington

    38.8951, -77.0364

    99% uptime

    90ms
    |
    4ms
    |
    20ms
  • 38.70.1.162

    NewConnect, LLC

    AS400704

    Washington

    38.8951, -77.0364

    98% uptime

    103ms
    |
    7ms
    |
    42ms
  • 40.88.122.145

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    94ms
    |
    2ms
    |
    52ms
  • 40.160.6.86

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    99% uptime

    92ms
    |
    0ms
    |
    82ms
  • 40.160.27.129

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    143ms
  • 50.144.147.130

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    100% uptime

    110ms
    |
    1ms
    |
    126ms
  • 50.151.59.210

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    100% uptime

    110ms
    |
    7ms
    |
    49ms
  • 50.169.39.82

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    100% uptime

    109ms
    |
    0ms
    |
    146ms
  • 50.238.164.195

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    99% uptime

    110ms
    |
    6ms
    |
    41ms
  • 51.81.32.40

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    92ms
    |
    0ms
    |
    114ms
  • 51.81.32.235

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    92ms
    |
    0ms
    |
    120ms
  • 51.81.33.140

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    99% uptime

    90ms
    |
    1ms
    |
    123ms
  • 51.81.33.146

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    122ms
  • 51.81.35.7

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    121ms
  • 51.81.82.69

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    122ms
  • 51.81.82.207

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    123ms
  • 51.81.83.78

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    90ms
    |
    1ms
    |
    118ms
  • 51.81.84.68

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    123ms
  • 51.81.109.203

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    92ms
    |
    0ms
    |
    40ms
  • 52.117.69.106

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    1ms
    |
    20ms
  • 52.188.17.229

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    99% uptime

    95ms
    |
    2ms
    |
    107ms
  • 57.152.18.228

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    94ms
    |
    0ms
    |
    128ms
  • 70.88.133.177

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    99% uptime

    121ms
    |
    10ms
    |
    99ms
  • 73.173.40.33

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    100% uptime

    120ms
    |
    1ms
    |
    216ms
  • 74.95.86.57

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    100% uptime

    120ms
    |
    8ms
    |
    208ms
  • 76.151.217.1

    Comcast Cable Communications, LLC

    AS7922

    Washington

    38.8951, -77.0364

    99% uptime

    122ms
    |
    2ms
    |
    197ms
  • 104.45.169.171

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    99% uptime

    94ms
    |
    1ms
    |
    72ms
  • 130.45.172.161

    Wilkes Communications, Inc.

    AS22191

    Washington

    35.5466, -77.0522

    99% uptime

    151ms
    |
    3ms
    |
    186ms
  • 135.148.43.69

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    92ms
    |
    0ms
    |
    121ms
  • 135.148.101.81

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    123ms
  • 135.148.138.184

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    123ms
  • 135.148.144.89

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    99% uptime

    90ms
    |
    0ms
    |
    126ms
  • 135.148.149.226

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    122ms
  • 135.148.151.12

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    92ms
    |
    0ms
    |
    102ms
  • 142.215.29.99

    Equinix (EMEA) Acquisition Enterprises B.V.

    AS15830

    Washington

    38.8951, -77.0364

    100% uptime

    104ms
    |
    1ms
    |
    51ms
  • 142.215.29.101

    Equinix (EMEA) Acquisition Enterprises B.V.

    AS15830

    Washington

    38.8951, -77.0364

    100% uptime

    104ms
    |
    0ms
    |
    40ms
  • 142.215.29.103

    Equinix (EMEA) Acquisition Enterprises B.V.

    AS15830

    Washington

    38.8951, -77.0364

    100% uptime

    104ms
    |
    2ms
    |
    38ms
  • 147.135.10.32

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    66ms
  • 147.135.79.194

    OVH SAS

    AS16276

    Washington

    38.8951, -77.0364

    100% uptime

    91ms
    |
    0ms
    |
    142ms
  • 149.52.85.160

    SkyQuantum Internet Service

    AS55201

    Washington

    38.8951, -77.0364

    94% uptime

    141ms
    |
    0ms
    |
    82ms
  • 169.47.16.114

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    1ms
    |
    48ms
  • 169.47.16.117

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    1ms
    |
    74ms
  • 169.47.16.119

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    99% uptime

    100ms
    |
    1ms
    |
    71ms
  • 169.47.16.124

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    3ms
    |
    80ms
  • 169.47.146.34

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    30ms
  • 169.47.146.35

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    99% uptime

    100ms
    |
    2ms
    |
    64ms
  • 169.47.146.39

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    94% uptime

    100ms
    |
    0ms
    |
    42ms
  • 169.47.146.42

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    20ms
  • 169.55.72.19

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    1ms
    |
    14ms
  • 169.55.72.84

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    0ms
    |
    18ms
  • 169.55.72.89

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    1ms
    |
    26ms
  • 169.55.79.85

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    98% uptime

    100ms
    |
    1ms
    |
    75ms
  • 169.55.79.86

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    58ms
  • 169.55.79.87

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    35ms
  • 169.55.79.90

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    1ms
    |
    62ms
  • 169.55.79.94

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    0ms
    |
    68ms
  • 169.55.94.244

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    17ms
  • 169.55.102.20

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    1ms
    |
    44ms
  • 169.55.102.26

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    2ms
    |
    30ms
  • 169.55.102.243

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    3ms
    |
    106ms
  • 169.55.102.247

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    0ms
    |
    18ms
  • 169.55.102.248

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    98% uptime

    100ms
    |
    1ms
    |
    90ms
  • 169.55.102.254

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    1ms
    |
    96ms
  • 169.55.107.210

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    0ms
    |
    28ms
  • 169.55.107.211

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    94% uptime

    101ms
    |
    0ms
    |
    22ms
  • 169.55.107.213

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    94% uptime

    100ms
    |
    0ms
    |
    11ms
  • 169.55.114.210

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    2ms
    |
    18ms
  • 169.55.114.211

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    28ms
  • 169.55.114.212

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    0ms
    |
    20ms
  • 169.55.126.153

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    24ms
  • 169.55.126.155

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    99% uptime

    101ms
    |
    1ms
    |
    59ms
  • 169.60.78.40

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    94% uptime

    101ms
    |
    0ms
    |
    194ms
  • 169.61.71.6

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    1ms
    |
    255ms
  • 169.61.71.13

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    0ms
    |
    216ms
  • 169.63.138.22

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    1ms
    |
    217ms
  • 169.63.173.242

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    1ms
    |
    34ms
  • 169.63.173.244

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    1ms
    |
    38ms
  • 169.63.173.250

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    101ms
    |
    0ms
    |
    39ms
  • 169.63.173.251

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    0ms
    |
    48ms
  • 172.191.194.128

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    94ms
    |
    1ms
    |
    127ms
  • 172.206.206.9

    Microsoft Corporation

    AS8075

    Washington

    38.7135, -78.1594

    100% uptime

    95ms
    |
    1ms
    |
    44ms
  • 192.255.49.13

    IBM Cloud

    AS36351

    Washington

    38.8951, -77.0364

    100% uptime

    100ms
    |
    1ms
    |
    78ms
  • 216.15.20.64

    RCN

    AS6079

    Washington

    38.8951, -77.0364

    98% uptime

    121ms
    |
    8ms
    |
    169ms
  • 24.149.31.119

    The Municipal Communications Utility of the City of Cedar Falls, Iowa

    AS13855

    Waterloo

    42.4928, -92.3430

    99% uptime

    118ms
    |
    1ms
    |
    26ms