DNS Servers

Japan 163 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

  • 202.223.247.232

    Research Organization of Information and Systems, National Institute of Informatics

    AS2907

    Asagaya-minami

    35.7021, 139.6375

    100% uptime

    268ms
    |
    49ms
    |
    406ms
  • 61.194.21.189

    NTT PC Communications, Inc.

    AS2514

    Chiba

    35.6000, 140.1167

    99% uptime

    253ms
    |
    6ms
    |
    368ms
  • 126.143.210.54

    SoftBank Corp.

    AS17676

    Chiba

    35.6000, 140.1167

    98% uptime

    255ms
    |
    4ms
    |
    750ms
  • 202.13.18.46

    Research Organization of Information and Systems, National Institute of Informatics

    AS2907

    Chino

    35.9944, 138.1543

    100% uptime

    270ms
    |
    4ms
    |
    294ms
  • 219.117.251.131

    NTT PC Communications, Inc.

    AS2514

    Fukui-shi

    36.0644, 136.2226

    99% uptime

    264ms
    |
    3ms
    |
    473ms
  • 122.217.101.28

    ARTERIA Networks Corporation

    AS17506

    Fukuoka

    33.6000, 130.4167

    100% uptime

    256ms
    |
    19ms
    |
    288ms
  • 203.192.102.105

    FreeBit Co.,Ltd.

    AS10013

    Hanawa

    40.1836, 140.7872

    100% uptime

    260ms
    |
    5ms
    |
    364ms
  • 58.191.60.25

    OPTAGE Inc.

    AS17511

    Hirakata

    34.8135, 135.6491

    99% uptime

    266ms
    |
    5ms
    |
    283ms
  • 131.186.32.203

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    99% uptime

    246ms
    |
    6ms
    |
    261ms
  • 140.245.82.232

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    100% uptime

    248ms
    |
    7ms
    |
    250ms
  • 141.147.181.192

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    100% uptime

    246ms
    |
    5ms
    |
    4ms
  • 158.101.151.0

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    96% uptime

    246ms
    |
    6ms
    |
    258ms
  • 168.138.195.82

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    100% uptime

    248ms
    |
    15ms
    |
    255ms
  • 168.138.200.16

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    99% uptime

    248ms
    |
    6ms
    |
    260ms
  • 168.138.203.77

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    100% uptime

    245ms
    |
    5ms
    |
    246ms
  • 168.138.211.11

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    100% uptime

    247ms
    |
    5ms
    |
    271ms
  • 193.123.164.88

    Oracle Corporation

    AS31898

    Inzai

    35.8089, 140.1185

    100% uptime

    246ms
    |
    5ms
    |
    252ms
  • 45.143.131.114

    xTom Japan Corporation

    AS3258

    Kanda-jinbōchō

    35.6841, 139.7521

    98% uptime

    249ms
    |
    6ms
    |
    269ms
  • 45.143.131.176

    xTom Japan Corporation

    AS3258

    Kanda-jinbōchō

    35.6841, 139.7521

    99% uptime

    253ms
    |
    5ms
    |
    260ms
  • 92.113.142.200

    IDC Cube

    AS36530

    Kanda-jinbōchō

    35.6841, 139.7521

    100% uptime

    224ms
    |
    5ms
    |
    240ms
  • 158.51.109.77

    DDPS Networks, LLC

    AS18526

    Kanda-jinbōchō

    35.6738, 139.7616

    98% uptime

    273ms
    |
    6ms
    |
    277ms
  • 202.223.61.252

    Minamikyusyu CableTV Net Inc.

    AS45687

    Kirishima

    31.7409, 130.7629

    98% uptime

    261ms
    |
    5ms
    |
    356ms
  • 219.100.140.137

    Minamikyusyu CableTV Net Inc.

    AS45687

    Kirishima

    31.7409, 130.7629

    99% uptime

    292ms
    |
    4ms
    |
    330ms
  • 124.47.115.211

    Kurashiki Cable TV

    AS9622

    Kurashiki

    34.5833, 133.7667

    98% uptime

    280ms
    |
    7ms
    |
    316ms
  • 157.70.222.244

    Kurashiki Cable TV

    AS9622

    Kurashiki

    34.5833, 133.7667

    98% uptime

    280ms
    |
    5ms
    |
    623ms
  • 61.194.100.137

    NTT PC Communications, Inc.

    AS2514

    Minato City

    35.6581, 139.7515

    99% uptime

    252ms
    |
    5ms
    |
    301ms
  • 31.223.184.175

    G-Core Labs S.A.

    AS199524

    Monzen-nakachō

    35.6309, 139.7917

    99% uptime

    232ms
    |
    3ms
    |
    254ms
  • 89.233.109.82

    HIVELOCITY, Inc.

    AS29802

    Monzen-nakachō

    35.6630, 139.8078

    98% uptime

    216ms
    |
    1ms
    |
    244ms
  • 114.134.46.80

    Niigata Communication Service

    AS9601

    Murakami

    38.2333, 139.4833

    98% uptime

    253ms
    |
    2ms
    |
    285ms
  • 119.82.26.17

    Tsukaeru.net, Web Hosting Company, Japan

    AS63997

    Nagano

    36.6500, 138.1833

    100% uptime

    276ms
    |
    8ms
    |
    274ms
  • 160.86.99.87

    Sony Network Communications Inc.

    AS2527

    Nagoya

    35.1815, 136.9064

    100% uptime

    279ms
    |
    5ms
    |
    170ms
  • 203.129.114.83

    Chubu Telecommunications Company, Inc.

    AS18126

    Nagoya

    35.1815, 136.9064

    98% uptime

    247ms
    |
    9ms
    |
    291ms
  • 150.249.220.81

    Sony Network Communications Inc.

    AS2527

    Nihonbashi-bakurochō

    35.6933, 139.7817

    99% uptime

    260ms
    |
    15ms
    |
    280ms
  • 45.32.14.93

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    239ms
    |
    2ms
    |
    262ms
  • 45.32.14.143

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    98% uptime

    242ms
    |
    2ms
    |
    259ms
  • 45.32.49.228

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    99% uptime

    239ms
    |
    4ms
    |
    268ms
  • 45.63.126.216

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    253ms
    |
    52ms
    |
    252ms
  • 45.76.52.20

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    252ms
    |
    4ms
    |
    252ms
  • 45.76.98.225

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    239ms
    |
    2ms
    |
    264ms
  • 45.76.101.254

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    98% uptime

    240ms
    |
    3ms
    |
    264ms
  • 45.76.104.245

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    243ms
    |
    31ms
    |
    263ms
  • 45.76.215.234

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    245ms
    |
    2ms
    |
    257ms
  • 45.77.28.46

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    238ms
    |
    7ms
    |
    259ms
  • 45.77.28.204

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    99% uptime

    252ms
    |
    5ms
    |
    252ms
  • 66.42.39.42

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    241ms
    |
    5ms
    |
    254ms
  • 104.156.238.150

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    96% uptime

    248ms
    |
    2ms
    |
    260ms
  • 139.180.198.65

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    98% uptime

    239ms
    |
    3ms
    |
    266ms
  • 139.180.206.179

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    98% uptime

    240ms
    |
    3ms
    |
    259ms
  • 167.179.67.203

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    96% uptime

    240ms
    |
    20ms
    |
    258ms
  • 167.179.86.22

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    242ms
    |
    19ms
    |
    258ms
  • 167.179.96.190

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    98% uptime

    241ms
    |
    3ms
    |
    260ms
  • 167.179.99.95

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    244ms
    |
    4ms
    |
    258ms
  • 167.179.102.110

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    239ms
    |
    4ms
    |
    274ms
  • 198.13.35.68

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    240ms
    |
    4ms
    |
    268ms
  • 202.182.99.158

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    98% uptime

    242ms
    |
    3ms
    |
    262ms
  • 202.182.100.159

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    99% uptime

    245ms
    |
    5ms
    |
    262ms
  • 202.182.114.44

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    240ms
    |
    5ms
    |
    264ms
  • 202.182.114.146

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    239ms
    |
    4ms
    |
    255ms
  • 207.148.91.174

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    241ms
    |
    4ms
    |
    263ms
  • 207.148.112.238

    The Constant Company, LLC

    AS20473

    Ōi

    35.6090, 139.7302

    100% uptime

    248ms
    |
    6ms
    |
    262ms
  • 65.99.35.177

    Mediatti Broadband Communications, LLC

    AS20134

    Okinawa

    26.3358, 127.8014

    100% uptime

    244ms
    |
    2ms
    |
    285ms
  • 15.168.232.93

    Amazon.com, Inc.

    AS16509

    Osaka

    34.6938, 135.5011

    100% uptime

    245ms
    |
    7ms
    |
    251ms
  • 27.110.19.226

    COLT Technology Services Group Limited

    AS8220

    Osaka

    34.6938, 135.5011

    98% uptime

    227ms
    |
    0ms
    |
    251ms
  • 61.194.100.210

    NTT PC Communications, Inc.

    AS2514

    Osaka

    34.6938, 135.5011

    100% uptime

    259ms
    |
    4ms
    |
    286ms
  • 61.194.100.211

    NTT PC Communications, Inc.

    AS2514

    Osaka

    34.6938, 135.5011

    100% uptime

    261ms
    |
    4ms
    |
    285ms
  • 61.194.100.212

    NTT PC Communications, Inc.

    AS2514

    Osaka

    34.6938, 135.5011

    98% uptime

    259ms
    |
    5ms
    |
    283ms
  • 64.176.43.5

    The Constant Company, LLC

    AS20473

    Osaka

    34.6938, 135.5011

    99% uptime

    237ms
    |
    3ms
    |
    266ms
  • 64.176.43.188

    The Constant Company, LLC

    AS20473

    Osaka

    34.6938, 135.5011

    100% uptime

    236ms
    |
    2ms
    |
    252ms
  • 64.176.56.250

    The Constant Company, LLC

    AS20473

    Osaka

    34.6938, 135.5011

    100% uptime

    246ms
    |
    3ms
    |
    241ms
  • 64.176.57.197

    The Constant Company, LLC

    AS20473

    Osaka

    34.6938, 135.5011

    100% uptime

    237ms
    |
    3ms
    |
    263ms
  • 64.176.60.112

    The Constant Company, LLC

    AS20473

    Osaka

    34.6938, 135.5011

    96% uptime

    237ms
    |
    1ms
    |
    256ms
  • 103.26.27.251

    TelHi Corporation

    AS150369

    Osaka

    34.6938, 135.5011

    98% uptime

    255ms
    |
    6ms
    |
    316ms
  • 103.88.44.33

    xTom

    AS4785

    Osaka

    34.6938, 135.5011

    99% uptime

    278ms
    |
    11ms
    |
    300ms
  • 150.230.61.80

    Oracle Corporation

    AS31898

    Osaka

    34.6938, 135.5011

    100% uptime

    238ms
    |
    1ms
    |
    256ms
  • 160.251.171.125

    GMO Internet Group, Inc.

    AS58791

    Osaka

    34.6938, 135.5011

    99% uptime

    262ms
    |
    4ms
    |
    299ms
  • 172.233.65.253

    Akamai Connected Cloud

    AS63949

    Osaka

    34.6938, 135.5011

    100% uptime

    267ms
    |
    7ms
    |
    345ms
  • 210.156.0.130

    Cyber Kansai Project

    AS4718

    Osaka

    34.6938, 135.5011

    96% uptime

    274ms
    |
    3ms
    |
    338ms
  • 116.58.174.11

    NTT PC Communications, Inc.

    AS2514

    Sapporo

    43.0667, 141.3500

    100% uptime

    274ms
    |
    5ms
    |
    385ms
  • 64.33.3.100

    Koshinomiyako Network, Inc.

    AS24255

    Takefu

    35.9039, 136.1669

    98% uptime

    260ms
    |
    5ms
    |
    579ms
  • 61.201.24.249

    SoftBank Corp.

    AS4725

    Tokushima

    34.0667, 134.5667

    100% uptime

    265ms
    |
    3ms
    |
    309ms
  • 8.216.82.12

    Alibaba (US) Technology Co., Ltd.

    AS45102

    Tokyo

    35.6895, 139.6917

    100% uptime

    222ms
    |
    4ms
    |
    236ms
  • 23.249.16.133

    Prime Security Corp.

    AS400618

    Tokyo

    35.6895, 139.6917

    98% uptime

    201ms
    |
    1ms
    |
    215ms
  • 27.123.14.19

    Ip Core Corporation

    AS38638

    Tokyo

    35.6895, 139.6917

    99% uptime

    262ms
    |
    4ms
    |
    304ms
  • 34.146.89.95

    Google LLC

    AS396982

    Tokyo

    35.6895, 139.6917

    98% uptime

    233ms
    |
    6ms
    |
    268ms
  • 35.190.224.220

    Google LLC

    AS396982

    Tokyo

    35.6895, 139.6917

    100% uptime

    231ms
    |
    6ms
    |
    252ms
  • 38.54.51.238

    Kaopu Cloud HK Limited

    AS138915

    Tokyo

    35.6895, 139.6917

    100% uptime

    260ms
    |
    20ms
    |
    277ms
  • 39.110.242.208

    Sony Network Communications Inc.

    AS2527

    Tokyo

    35.6895, 139.6917

    99% uptime

    262ms
    |
    3ms
    |
    303ms
  • 43.167.157.97

    Tencent Building, Kejizhongyi Avenue

    AS132203

    Tokyo

    35.6895, 139.6917

    98% uptime

    268ms
    |
    6ms
    |
    278ms
  • 43.251.56.1

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    239ms
    |
    7ms
    |
    282ms
  • 43.251.56.5

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    245ms
    |
    5ms
    |
    276ms
  • 43.251.56.6

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    241ms
    |
    7ms
    |
    284ms
  • 43.251.58.1

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    253ms
    |
    4ms
    |
    266ms
  • 43.251.58.3

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    245ms
    |
    6ms
    |
    280ms
  • 43.251.58.4

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    262ms
    |
    5ms
    |
    264ms
  • 43.251.59.1

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    252ms
    |
    4ms
    |
    269ms
  • 43.251.59.2

    Skycloud Computing co., Ltd.

    AS7483

    Tokyo

    35.6895, 139.6917

    100% uptime

    245ms
    |
    5ms
    |
    275ms
  • 45.8.113.225

    xTom Japan Corporation

    AS3258

    Tokyo

    35.6895, 139.6917

    99% uptime

    248ms
    |
    4ms
    |
    265ms
  • 45.135.161.140

    EDGENAT CLOUD

    AS400342

    Tokyo

    35.6895, 139.6917

    98% uptime

    214ms
    |
    14ms
    |
    236ms
  • 45.159.48.14

    xTom Japan Corporation

    AS3258

    Tokyo

    35.6895, 139.6917

    100% uptime

    273ms
    |
    5ms
    |
    282ms
  • 47.245.33.180

    Alibaba (US) Technology Co., Ltd.

    AS45102

    Tokyo

    35.6895, 139.6917

    100% uptime

    226ms
    |
    5ms
    |
    246ms