.arpaドメインの全リストをダウンロード

Name: All .arpa domains
Creator: webatla
License: https://webatla.com/terms

.arpaについて

.arpaは、1985年にARPANETインフラの一部として当初作成された、インターネット上で最も古く技術的に重要なトップレベルドメインのひとつです。インターネットアーキテクチャ委員会（IAB）を代表してIANA（Internet Assigned Numbers Authority）によって専属的に管理されており、一般登録の対象外であるインフラ用TLDです。主な用途は、IPv4向けのin-addr.arpaやIPv6向けのip6.arpaによる逆引きDNS検索など、IPアドレスをドメイン名に対応付ける技術的なインターネット機能です。

.arpaという名称は、インターネットの前身の開発に資金を提供した米国政府機関、高等研究計画局（ARPA）に由来します。今日、.arpaはインターネットの経路制御とアドレス指定という重要な機能を支えており、そのサブドメインはEメール、ウェブ閲覧、ネットワーク診断が正しく機能するために不可欠です。一般にはあまり知られていないものの、逆引きDNS検索は世界中のインターネットインフラで絶えず発生しているため、.arpaはDNSシステムにおいて最も頻繁に照会されるTLDのひとつです。

概要

タイプジェネリック (gTLD)

レジストリIANA

設立1985

IDN対応いいえ

DNSSECはい

すべての数値は2026年8月18日時点のものです

新規ドメイン登録数

— 先週

— 先月

アクティブドメイン数

229

.arpa ゾーンで登録されているアクティブなドメイン数

アクティブサイト数

1

.arpa ゾーンのアクティブなサイト数

DNS

228

DNSレコードを持つドメイン数

国数

0

ホスティングIPで判別した対象国数

RDAP & WHOIS

229

RDAPおよびWHOISレコードを持つドメイン数

.arpaドメインのデータベースプレビュー

ライブデータベースからのサンプル5行です。データセットを切り替えるとそれぞれの内容を確認できます。ファイルをプレビューするか、完全なデータセットを購入してください。

webatla-arpa-all-2026-08-18.jsonl.zst · 229 行 · 22 列毎日更新の最新エクスポート

Domain	TLD	Domain type
in-addr.arpa	arpa	ICANN
ip6.arpa	arpa	ICANN
lex.urn.arpa	arpa	ICANN
26.in-addr.arpa	arpa	ICANN
2.in-addr.arpa	arpa	ICANN
…	…	…

Domain	TLD	Domain type	Country by IP	PR value	Harmonic value	Domain creation date	Domain expiration date
in-addr.arpa	arpa	ICANN	—	0.000000049162	13,434,987	1994-09-27	—
ip6.arpa	arpa	ICANN	—	0.000000045777	13,411,536	2001-11-10	—
lex.urn.arpa	arpa	ICANN	—	0.0000000368899	13,813,906	2002-10-01	—
26.in-addr.arpa	arpa	ICANN	—	0.0000000285599	13,356,403	—	—
2.in-addr.arpa	arpa	ICANN	—	0.0000000285408	15,129,652	—	—
…	…	…	…	…	…	…	…

Domain	TLD	Domain type	HTTP status	IP address	Country by IP	Social networks	Technologies last data checked	Technologies	PR value	Harmonic value	Domain creation date	Domain expiration date
in-addr.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-08-06	—	0.000000049162	13,434,987	1994-09-27	—
ip6.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-08-06	—	0.000000045777	13,411,536	2001-11-10	—
lex.urn.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-08-08	—	0.0000000368899	13,813,906	2002-10-01	—
26.in-addr.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-07-19	—	0.0000000285599	13,356,403	—	—
2.in-addr.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-07-19	—	0.0000000285408	15,129,652	—	—
…	…	…	…	…	…	…	…	…	…	…	…	…

Domain	TLD	Domain type	DNS last data checked	DNS Status	DNS records
in-addr.arpa	arpa	ICANN	2026-08-08	TRUE	{"DS":[{"digest":"13e5501c56b20394da921b51412d48b7089c5eb6957a7c58553c4d4d424f04df","key_tag":53696,"algorithm":8,"digest_type":2},{"digest":"5cafccec201d1933b4c9f6a9c8f51e51f3b39979058ac21b8df1b1f281cbc6f2","key_tag":47054,"algorithm":8,"digest_type":2},{"digest":"aaf4fb5d213ef25ae44679032ebe3514c487d7abd99d7f5fec3383d030733c73","key_tag":63982,"algorithm":8,"digest_type":2},{"digest":"e0e2bf5cfbd66572ca05ec18267d91509ba6a9405af05c3fd4141dfa45200c08","key_tag":54956,"algorithm":8,"digest_type":2}],"NS":["a.in-addr-servers.arpa","b.in-addr-servers.arpa","c.in-addr-servers.arpa","d.in-addr-servers.arpa","e.in-addr-servers.arpa","f.in-addr-servers.arpa"],"SOA":{"mname":"b.in-addr-servers.arpa","retry":900,"rname":"nstld.iana.org","expire":604800,"serial":2026023121,"minimum":3600,"refresh":1800},"DNSKEY":[{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAaz/5oy0pjvJ1+8Nfq0Vu/MmNBUOn8XZ5aoobVz1CRE6bImJFmgMPG5Zpuk7AqPUxrVJn3dY2FEvHTJum9grYxy+xWv2nGmPMTq8c5JbyooZ3P3x0KpWpRCRXFlJJQJyd+EWAVpXPab2+4I3pA4wvoTUe1jn8OD2F3cJANmalsNl"},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAbNX16PjL99cu7CpO7Nt5EXoq8k6TCZpzxz13wCITdkwIce4UrzUqw7b76WH7N3KKAb4uJgmswkujk+gYMqnMAwNBFELrCDDkflw2AIjFPXBd2Txw8o3H5of2uIbAijm76B562VIiT3p0RIP1SH4eA+wHwYmqM3o/PiYfCxQD1c+EJx6b6dRcKAfeX4XMSsM6DyI6tjLGZ//w/IspRnbRb6Q36zWNyPPY2+5fqkaJ/94OKapvXTCUpWsNqKYlOxMwovwW9a2uBIgldzSq9mCtGUXU7mRZkwUIpnzA5Qe+lYdimWnzve7BXVs8ZZUyNhlDMlWYUrYHiaJ0uESYAWZQ98="},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAbdOaEhLDa/H2m+hbXBHiAUE95PgpL2358lkJCBmb2Dn7aImc5sqoaEa48hlabMuG2PfnbWd3ttpVXX6mwLRMppyhJeBbr1q2YWtzi+Xx5modXLKSDPuLliLUQ1oPnq2QWK7BUNwmV70gQSOx78vkisDqFzocC2aiFAi+D2r45GPvtBMbjfCA1FB0SELeUCsxhgoAHphO5T6ITCrOccM7XX7A4qRbcbS65HOcbT+UDG9OoXjmw2j8mWgJXrpwvdsskaISrTivzcqadgOinSgAL3bVYFKCkiVBmx87d88v+OuK+358xsUIU+0MzXUidLS8086BpdiEW4cJ6c08oDyC10="}]}
ip6.arpa	arpa	ICANN	2026-08-08	TRUE	{"DS":[{"digest":"068554efcb5861f42af93ef8e79c442a86c16fc5652e6b6d2419ed527f344d17","key_tag":13880,"algorithm":8,"digest_type":2},{"digest":"8a11501086330132be2c23f22dedf0634ad5ff668b4aa1988e172c6a2a4e5f7b","key_tag":64060,"algorithm":8,"digest_type":2},{"digest":"e6b54e0a20ce1edbfcb6879c02f5782059cecb043a31d804a04afa51af01d5fb","key_tag":45094,"algorithm":8,"digest_type":2}],"NS":["a.ip6-servers.arpa","b.ip6-servers.arpa","c.ip6-servers.arpa","d.ip6-servers.arpa","e.ip6-servers.arpa","f.ip6-servers.arpa"],"SOA":{"mname":"b.ip6-servers.arpa","retry":900,"rname":"nstld.iana.org","expire":604800,"serial":2026022550,"minimum":3600,"refresh":1800},"DNSKEY":[{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAZuV3D47mDLqI7GZY30GPX+O3kpT8s6k+Q2Iz9/mF5ua+XbncDI6VLDsnw4/r8lj3XC2LUhX/Pt4FdwzPonYf0bZAFShq2n7Sftb4oBOjX6Pel8PKYp6RkWjy4Wo351uBQxBOq+XkbYOeh46dJ9sk8iHBJFu35UP4OSBNm+0qWeB"},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAa8bJ22d6oorQjwmAivlT8diruwB75t3hz7G/FHOgFxTKnbRzkCtFItnxaBvD+lygqsj38amSqwsLYnNvejL/9kSzMdntRc5fC+9E+0m9Wq+liYSm60IxKvSL0fzApA80UgD1rpRtelBrkyiJyj3byiRcEDJhRXPmyQOqNDnVpq3tTDPlkwEAF7uAmp3qKRZWJF6VswoAFqya7pMiCt8M+No+xiWZro87ZqTwRUBMJWKafO5ONH+HoZDvDeP+CNsKyt5GTROX+UxxT8xSueJidceJsKaI75HvEOp0kLAr8TPSvg4eBkk5Pgn+LvNBQ3ZdPMfHIKSLbZ+J3OOJJIkgpk="},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAb+iy1CqMSS2fAoZhqeG0b1MxbegsUt94GIYCOe4PRQYiyVZb0Wi3s2RpSNoC1XNz1ne1CYAq2B0/XCwXzBVBppG4zJ6Hr4LAoXBRmlLSmNlbqbNJ8WCy0y5c6CNMKGRfd9KPzko1MO1wLbTRFiFDjE2h602c3K1qawngVcbRLMNnttAWJU2q+8BzdN26YeDdpsSFdPI+CbifItfwFfJx8BOIQkcOJX8gjFxs9bvGuXTaf7qLzyNFklZG7NY63ooOdVYV9UoZH0bcdVSRg4a/Ilqryvb9eBeihkWs1+h57ppQGcR61ryfQqGc+19hSvO9DM1+X2g9uFzdxs3zg5e3n8="}]}
lex.urn.arpa	arpa	ICANN	2026-08-12	TRUE	{"NAPTR":[{"flags":"","order":100,"regexp":"","service":"","preference":10,"replacement":"lex-nameserver.nic.it"}]}
26.in-addr.arpa	arpa	ICANN	2026-08-11	TRUE	{"NS":["CON1R.NIPR.MIL","CON2R.NIPR.MIL","EUR1R.NIPR.MIL","EUR2R.NIPR.MIL","PAC1R.NIPR.MIL","PAC2R.NIPR.MIL"],"SOA":{"mname":"CON1R.NIPR.MIL","retry":900,"rname":"DISA\\.COLUMBUS\\.NS\\.MBX\\.HOSTMASTER-DOD-NIC.MAIL.MIL","expire":1209600,"serial":2026081101,"minimum":10800,"refresh":10800}}
2.in-addr.arpa	arpa	ICANN	2026-08-15	TRUE	{"DS":[{"digest":"92b30905ee75a592bcfce08a1a64928e3e4ff37d7d69cd4ccff10542bed36aca","key_tag":8204,"algorithm":13,"digest_type":2}],"NS":["ns3.afrinic.net","ns3.lacnic.net","ns4.apnic.net","pri.authdns.ripe.net","rirns.arin.net"],"SOA":{"mname":"pri.authdns.ripe.net","retry":600,"rname":"dns.ripe.net","expire":864000,"serial":1786827827,"minimum":3600,"refresh":3600},"DNSKEY":[{"flags":257,"protocol":3,"algorithm":13,"public_key":"CmjhNdzrwOHDhkRExzo7zRHrSZg8TJM2c6Nv1UwYA96avPCtwcbZvH0V5V3SaUAB8Mj8PdUMw26B8HC6AJMUvQ=="}]}
…	…	…	…	…	…

Domain	RDAP/WHOIS last data checked	RDAP/WHOIS method	Domain creation date	Domain expiration date	Domain last changed	Registrar	RDAP/WHOIS Record	Response Status RDAP/WHOIS
in-addr.arpa	2026-08-09	WHOIS	1994-09-27	—	2025-07-10	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: IN-ADDR.ARPA\n\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington Delaware 19801\naddress: United States\n\ncontact: administrative\nname: Internet Architecture Board (IAB)\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington Delaware 19801\naddress: United States\nphone: +1 510 492 4080\nfax-no: +1 510 492 4001\ne-mail: iab@iab.org\n\ncontact: technical\nname: Internet Assigned Numbers Authority (IANA)\norganisation: Internet Corporation for Assigned Names and Numbers (ICANN)\naddress: 12025 Waterfront Drive\naddress: Suite 300\naddress: Los Angeles California 90094\naddress: US\nphone: +1 310 301 5800\nfax-no: +1 310 823 8649\ne-mail: tld-contact@iana.org\n\nnserver: A.IN-ADDR-SERVERS.ARPA 199.180.182.53 2620:37:e000::53\nnserver: B.IN-ADDR-SERVERS.ARPA 199.253.183.183 2001:500:87:0:0:0:0:87\nnserver: C.IN-ADDR-SERVERS.ARPA 196.216.169.10 2001:43f8:110::10\nnserver: D.IN-ADDR-SERVERS.ARPA 200.10.60.53 2001:13c7:7010::53\nnserver: E.IN-ADDR-SERVERS.ARPA 2001:dd8:6::101 203.119.86.101\nnserver: F.IN-ADDR-SERVERS.ARPA 193.0.9.1 2a13:27c0:30::1\nds-rdata: 53696 8 2 13E5501C56B20394DA921B51412D48B7089C5EB6957A7C58553C4D4D424F04DF\nds-rdata: 47054 8 2 5CAFCCEC201D1933B4C9F6A9C8F51E51F3B39979058AC21B8DF1B1F281CBC6F2\nds-rdata: 63982 8 2 AAF4FB5D213EF25AE44679032EBE3514C487D7ABD99D7F5FEC3383D030733C73\nds-rdata: 54956 8 2 E0E2BF5CFBD66572CA05EC18267D91509BA6A9405AF05C3FD4141DFA45200C08\n\nremarks: This domain is administered as part of the .ARPA zone\nremarks: management, described at https://iana.org/domains/arpa\n\ncreated: 1994-09-27\nchanged: 2025-07-10\nsource: IANA"}	Domain is active
ip6.arpa	2026-08-17	WHOIS	2001-11-10	—	2025-07-10	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: IP6.ARPA\n\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington Delaware 19801\naddress: United States\n\ncontact: administrative\nname: Internet Architecture Board (IAB)\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington DE 19801\naddress: United States\nphone: +1 510 492 4080\nfax-no: +1 510 492 4001\ne-mail: iab@iab.org\n\ncontact: technical\nname: Internet Assigned Numbers Authority (IANA)\norganisation: Internet Corporation for Assigned Names and Numbers (ICANN)\naddress: 12025 Waterfront Drive\naddress: Suite 300\naddress: Los Angeles CA 90094\naddress: United States\nphone: +1 310 301 5800\nfax-no: +1 310 823 8649\ne-mail: tld-contact@iana.org\n\nnserver: A.IP6-SERVERS.ARPA 199.180.182.53 2620:37:e000::53\nnserver: B.IP6-SERVERS.ARPA 199.253.182.182 2001:500:86::86\nnserver: C.IP6-SERVERS.ARPA 196.216.169.11 2001:43f8:110::11\nnserver: D.IP6-SERVERS.ARPA 200.7.86.53 2001:13c7:7012::53\nnserver: E.IP6-SERVERS.ARPA 2001:dd8:6::101 203.119.86.101\nnserver: F.IP6-SERVERS.ARPA 193.0.9.2 2a13:27c0:30::2\nds-rdata: 13880 8 2 068554EFCB5861F42AF93EF8E79C442A86C16FC5652E6B6D2419ED527F344D17\nds-rdata: 45094 8 2 E6B54E0A20CE1EDBFCB6879C02F5782059CECB043A31D804A04AFA51AF01D5FB\nds-rdata: 64060 8 2 8A11501086330132BE2C23F22DEDF0634AD5FF668B4AA1988E172C6A2A4E5F7B\n\nremarks: This domain is administered as part of the .ARPA zone\nremarks: management, described at https://iana.org/domains/arpa\n\ncreated: 2001-11-10\nchanged: 2025-07-10\nsource: IANA"}	Domain is active
lex.urn.arpa	2026-08-17	WHOIS	2002-10-01	—	2026-05-22	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: URN.ARPA\n\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington DE 19801\naddress: United States\n\ncontact: administrative\nname: Internet Architecture Board (IAB)\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington DE 19801\naddress: United States\nphone: +1 510 492 4080\nfax-no: +1 510 492 4001\ne-mail: iab@iab.org\n\ncontact: technical\nname: Internet Assigned Numbers Authority (IANA)\norganisation: Internet Corporation for Assigned Names and Numbers (ICANN)\naddress: 12025 Waterfront Drive\naddress: Suite 300\naddress: Los Angeles CA 90094\naddress: United States\nphone: +1 310 301 5800\nfax-no: +1 310 823 8649\ne-mail: tld-contact@iana.org\n\nnserver: A.IANA-SERVERS.NET\nnserver: B.IANA-SERVERS.NET\nnserver: C.IANA-SERVERS.NET\nnserver: NS3.LACNIC.NET\nnserver: NS4.APNIC.NET\nds-rdata: 45052 8 2 7685B675F93ADA412CFE534820C8DCC55654B1711F677BA83A8564C12943F695\nds-rdata: 28996 8 2 8E66D01A1E5864BCDB8E1F85579AEC7C8C536C9D6FC7032EE708E869FD27F3D3\nds-rdata: 34555 8 2 BD743967DEF1CAF0812FE9EFF2371D3ADF29E27251DB272145A5D523C92F7101\n\nremarks: This domain is administered as part of the .ARPA zone\nremarks: management, described at https://iana.org/domains/arpa\n\ncreated: 2002-10-01\nchanged: 2026-05-22\nsource: IANA"}	Temporary mismatch
26.in-addr.arpa	2026-08-10	WHOIS	—	—	2026-05-11	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: 26.in-addr.arpa\n\norganisation: Defense Information Systems Agency\n\nnserver: CON1R.NIPR.MIL.\nnserver: CON2R.NIPR.MIL.\nnserver: EUR1R.NIPR.MIL.\nnserver: EUR2R.NIPR.MIL.\nnserver: PAC1R.NIPR.MIL.\nnserver: PAC2R.NIPR.MIL.\n\nwhois: whois.arin.net\n\nchanged: 1995-05\nchanged: 2026-05-11\nsource: IANA"}	Domain is active
2.in-addr.arpa	2026-08-18	WHOIS	—	—	2026-03-17	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: 2.in-addr.arpa\n\norganisation: RIPE NCC\n\nnserver: ns3.afrinic.net.\nnserver: ns3.lacnic.net.\nnserver: ns4.apnic.net.\nnserver: pri.authdns.ripe.net.\nnserver: rirns.arin.net.\nds-rdata: 8204 13 2 92b30905ee75a592bcfce08a1a64928e3e4ff37d7d69cd4ccff10542bed36aca\n\nwhois: whois.ripe.net\n\nchanged: 2009-09\nchanged: 2026-03-17\nsource: IANA"}	Domain is active
…	…	…	…	…	…	…	…	…

Domain	TLD	Domain type	HTTP status	IP address	Country by IP	Social networks	Technologies last data checked	Technologies	DNS last data checked	DNS Status	DNS records	PR value	Harmonic value	RDAP/WHOIS last data checked	RDAP/WHOIS method	Domain creation date	Domain expiration date	Domain last changed	Registrar	RDAP/WHOIS Record	Response Status RDAP/WHOIS
in-addr.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-08-06	—	2026-08-08	TRUE	{"DS":[{"digest":"13e5501c56b20394da921b51412d48b7089c5eb6957a7c58553c4d4d424f04df","key_tag":53696,"algorithm":8,"digest_type":2},{"digest":"5cafccec201d1933b4c9f6a9c8f51e51f3b39979058ac21b8df1b1f281cbc6f2","key_tag":47054,"algorithm":8,"digest_type":2},{"digest":"aaf4fb5d213ef25ae44679032ebe3514c487d7abd99d7f5fec3383d030733c73","key_tag":63982,"algorithm":8,"digest_type":2},{"digest":"e0e2bf5cfbd66572ca05ec18267d91509ba6a9405af05c3fd4141dfa45200c08","key_tag":54956,"algorithm":8,"digest_type":2}],"NS":["a.in-addr-servers.arpa","b.in-addr-servers.arpa","c.in-addr-servers.arpa","d.in-addr-servers.arpa","e.in-addr-servers.arpa","f.in-addr-servers.arpa"],"SOA":{"mname":"b.in-addr-servers.arpa","retry":900,"rname":"nstld.iana.org","expire":604800,"serial":2026023121,"minimum":3600,"refresh":1800},"DNSKEY":[{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAaz/5oy0pjvJ1+8Nfq0Vu/MmNBUOn8XZ5aoobVz1CRE6bImJFmgMPG5Zpuk7AqPUxrVJn3dY2FEvHTJum9grYxy+xWv2nGmPMTq8c5JbyooZ3P3x0KpWpRCRXFlJJQJyd+EWAVpXPab2+4I3pA4wvoTUe1jn8OD2F3cJANmalsNl"},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAbNX16PjL99cu7CpO7Nt5EXoq8k6TCZpzxz13wCITdkwIce4UrzUqw7b76WH7N3KKAb4uJgmswkujk+gYMqnMAwNBFELrCDDkflw2AIjFPXBd2Txw8o3H5of2uIbAijm76B562VIiT3p0RIP1SH4eA+wHwYmqM3o/PiYfCxQD1c+EJx6b6dRcKAfeX4XMSsM6DyI6tjLGZ//w/IspRnbRb6Q36zWNyPPY2+5fqkaJ/94OKapvXTCUpWsNqKYlOxMwovwW9a2uBIgldzSq9mCtGUXU7mRZkwUIpnzA5Qe+lYdimWnzve7BXVs8ZZUyNhlDMlWYUrYHiaJ0uESYAWZQ98="},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAbdOaEhLDa/H2m+hbXBHiAUE95PgpL2358lkJCBmb2Dn7aImc5sqoaEa48hlabMuG2PfnbWd3ttpVXX6mwLRMppyhJeBbr1q2YWtzi+Xx5modXLKSDPuLliLUQ1oPnq2QWK7BUNwmV70gQSOx78vkisDqFzocC2aiFAi+D2r45GPvtBMbjfCA1FB0SELeUCsxhgoAHphO5T6ITCrOccM7XX7A4qRbcbS65HOcbT+UDG9OoXjmw2j8mWgJXrpwvdsskaISrTivzcqadgOinSgAL3bVYFKCkiVBmx87d88v+OuK+358xsUIU+0MzXUidLS8086BpdiEW4cJ6c08oDyC10="}]}	0.000000049162	13,434,987	2026-08-09	WHOIS	1994-09-27	—	2025-07-10	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: IN-ADDR.ARPA\n\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington Delaware 19801\naddress: United States\n\ncontact: administrative\nname: Internet Architecture Board (IAB)\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington Delaware 19801\naddress: United States\nphone: +1 510 492 4080\nfax-no: +1 510 492 4001\ne-mail: iab@iab.org\n\ncontact: technical\nname: Internet Assigned Numbers Authority (IANA)\norganisation: Internet Corporation for Assigned Names and Numbers (ICANN)\naddress: 12025 Waterfront Drive\naddress: Suite 300\naddress: Los Angeles California 90094\naddress: US\nphone: +1 310 301 5800\nfax-no: +1 310 823 8649\ne-mail: tld-contact@iana.org\n\nnserver: A.IN-ADDR-SERVERS.ARPA 199.180.182.53 2620:37:e000::53\nnserver: B.IN-ADDR-SERVERS.ARPA 199.253.183.183 2001:500:87:0:0:0:0:87\nnserver: C.IN-ADDR-SERVERS.ARPA 196.216.169.10 2001:43f8:110::10\nnserver: D.IN-ADDR-SERVERS.ARPA 200.10.60.53 2001:13c7:7010::53\nnserver: E.IN-ADDR-SERVERS.ARPA 2001:dd8:6::101 203.119.86.101\nnserver: F.IN-ADDR-SERVERS.ARPA 193.0.9.1 2a13:27c0:30::1\nds-rdata: 53696 8 2 13E5501C56B20394DA921B51412D48B7089C5EB6957A7C58553C4D4D424F04DF\nds-rdata: 47054 8 2 5CAFCCEC201D1933B4C9F6A9C8F51E51F3B39979058AC21B8DF1B1F281CBC6F2\nds-rdata: 63982 8 2 AAF4FB5D213EF25AE44679032EBE3514C487D7ABD99D7F5FEC3383D030733C73\nds-rdata: 54956 8 2 E0E2BF5CFBD66572CA05EC18267D91509BA6A9405AF05C3FD4141DFA45200C08\n\nremarks: This domain is administered as part of the .ARPA zone\nremarks: management, described at https://iana.org/domains/arpa\n\ncreated: 1994-09-27\nchanged: 2025-07-10\nsource: IANA"}	Domain is active
ip6.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-08-06	—	2026-08-08	TRUE	{"DS":[{"digest":"068554efcb5861f42af93ef8e79c442a86c16fc5652e6b6d2419ed527f344d17","key_tag":13880,"algorithm":8,"digest_type":2},{"digest":"8a11501086330132be2c23f22dedf0634ad5ff668b4aa1988e172c6a2a4e5f7b","key_tag":64060,"algorithm":8,"digest_type":2},{"digest":"e6b54e0a20ce1edbfcb6879c02f5782059cecb043a31d804a04afa51af01d5fb","key_tag":45094,"algorithm":8,"digest_type":2}],"NS":["a.ip6-servers.arpa","b.ip6-servers.arpa","c.ip6-servers.arpa","d.ip6-servers.arpa","e.ip6-servers.arpa","f.ip6-servers.arpa"],"SOA":{"mname":"b.ip6-servers.arpa","retry":900,"rname":"nstld.iana.org","expire":604800,"serial":2026022550,"minimum":3600,"refresh":1800},"DNSKEY":[{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAZuV3D47mDLqI7GZY30GPX+O3kpT8s6k+Q2Iz9/mF5ua+XbncDI6VLDsnw4/r8lj3XC2LUhX/Pt4FdwzPonYf0bZAFShq2n7Sftb4oBOjX6Pel8PKYp6RkWjy4Wo351uBQxBOq+XkbYOeh46dJ9sk8iHBJFu35UP4OSBNm+0qWeB"},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAa8bJ22d6oorQjwmAivlT8diruwB75t3hz7G/FHOgFxTKnbRzkCtFItnxaBvD+lygqsj38amSqwsLYnNvejL/9kSzMdntRc5fC+9E+0m9Wq+liYSm60IxKvSL0fzApA80UgD1rpRtelBrkyiJyj3byiRcEDJhRXPmyQOqNDnVpq3tTDPlkwEAF7uAmp3qKRZWJF6VswoAFqya7pMiCt8M+No+xiWZro87ZqTwRUBMJWKafO5ONH+HoZDvDeP+CNsKyt5GTROX+UxxT8xSueJidceJsKaI75HvEOp0kLAr8TPSvg4eBkk5Pgn+LvNBQ3ZdPMfHIKSLbZ+J3OOJJIkgpk="},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAb+iy1CqMSS2fAoZhqeG0b1MxbegsUt94GIYCOe4PRQYiyVZb0Wi3s2RpSNoC1XNz1ne1CYAq2B0/XCwXzBVBppG4zJ6Hr4LAoXBRmlLSmNlbqbNJ8WCy0y5c6CNMKGRfd9KPzko1MO1wLbTRFiFDjE2h602c3K1qawngVcbRLMNnttAWJU2q+8BzdN26YeDdpsSFdPI+CbifItfwFfJx8BOIQkcOJX8gjFxs9bvGuXTaf7qLzyNFklZG7NY63ooOdVYV9UoZH0bcdVSRg4a/Ilqryvb9eBeihkWs1+h57ppQGcR61ryfQqGc+19hSvO9DM1+X2g9uFzdxs3zg5e3n8="}]}	0.000000045777	13,411,536	2026-08-17	WHOIS	2001-11-10	—	2025-07-10	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: IP6.ARPA\n\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington Delaware 19801\naddress: United States\n\ncontact: administrative\nname: Internet Architecture Board (IAB)\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington DE 19801\naddress: United States\nphone: +1 510 492 4080\nfax-no: +1 510 492 4001\ne-mail: iab@iab.org\n\ncontact: technical\nname: Internet Assigned Numbers Authority (IANA)\norganisation: Internet Corporation for Assigned Names and Numbers (ICANN)\naddress: 12025 Waterfront Drive\naddress: Suite 300\naddress: Los Angeles CA 90094\naddress: United States\nphone: +1 310 301 5800\nfax-no: +1 310 823 8649\ne-mail: tld-contact@iana.org\n\nnserver: A.IP6-SERVERS.ARPA 199.180.182.53 2620:37:e000::53\nnserver: B.IP6-SERVERS.ARPA 199.253.182.182 2001:500:86::86\nnserver: C.IP6-SERVERS.ARPA 196.216.169.11 2001:43f8:110::11\nnserver: D.IP6-SERVERS.ARPA 200.7.86.53 2001:13c7:7012::53\nnserver: E.IP6-SERVERS.ARPA 2001:dd8:6::101 203.119.86.101\nnserver: F.IP6-SERVERS.ARPA 193.0.9.2 2a13:27c0:30::2\nds-rdata: 13880 8 2 068554EFCB5861F42AF93EF8E79C442A86C16FC5652E6B6D2419ED527F344D17\nds-rdata: 45094 8 2 E6B54E0A20CE1EDBFCB6879C02F5782059CECB043A31D804A04AFA51AF01D5FB\nds-rdata: 64060 8 2 8A11501086330132BE2C23F22DEDF0634AD5FF668B4AA1988E172C6A2A4E5F7B\n\nremarks: This domain is administered as part of the .ARPA zone\nremarks: management, described at https://iana.org/domains/arpa\n\ncreated: 2001-11-10\nchanged: 2025-07-10\nsource: IANA"}	Domain is active
lex.urn.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-08-08	—	2026-08-12	TRUE	{"NAPTR":[{"flags":"","order":100,"regexp":"","service":"","preference":10,"replacement":"lex-nameserver.nic.it"}]}	0.0000000368899	13,813,906	2026-08-17	WHOIS	2002-10-01	—	2026-05-22	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: URN.ARPA\n\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington DE 19801\naddress: United States\n\ncontact: administrative\nname: Internet Architecture Board (IAB)\norganisation: Internet Architecture Board (IAB)\naddress: c/o IETF Administration LLC\naddress: 1000 N. West St.\naddress: Suite 1200\naddress: Wilmington DE 19801\naddress: United States\nphone: +1 510 492 4080\nfax-no: +1 510 492 4001\ne-mail: iab@iab.org\n\ncontact: technical\nname: Internet Assigned Numbers Authority (IANA)\norganisation: Internet Corporation for Assigned Names and Numbers (ICANN)\naddress: 12025 Waterfront Drive\naddress: Suite 300\naddress: Los Angeles CA 90094\naddress: United States\nphone: +1 310 301 5800\nfax-no: +1 310 823 8649\ne-mail: tld-contact@iana.org\n\nnserver: A.IANA-SERVERS.NET\nnserver: B.IANA-SERVERS.NET\nnserver: C.IANA-SERVERS.NET\nnserver: NS3.LACNIC.NET\nnserver: NS4.APNIC.NET\nds-rdata: 45052 8 2 7685B675F93ADA412CFE534820C8DCC55654B1711F677BA83A8564C12943F695\nds-rdata: 28996 8 2 8E66D01A1E5864BCDB8E1F85579AEC7C8C536C9D6FC7032EE708E869FD27F3D3\nds-rdata: 34555 8 2 BD743967DEF1CAF0812FE9EFF2371D3ADF29E27251DB272145A5D523C92F7101\n\nremarks: This domain is administered as part of the .ARPA zone\nremarks: management, described at https://iana.org/domains/arpa\n\ncreated: 2002-10-01\nchanged: 2026-05-22\nsource: IANA"}	Temporary mismatch
26.in-addr.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-07-19	—	2026-08-11	TRUE	{"NS":["CON1R.NIPR.MIL","CON2R.NIPR.MIL","EUR1R.NIPR.MIL","EUR2R.NIPR.MIL","PAC1R.NIPR.MIL","PAC2R.NIPR.MIL"],"SOA":{"mname":"CON1R.NIPR.MIL","retry":900,"rname":"DISA\\.COLUMBUS\\.NS\\.MBX\\.HOSTMASTER-DOD-NIC.MAIL.MIL","expire":1209600,"serial":2026081101,"minimum":10800,"refresh":10800}}	0.0000000285599	13,356,403	2026-08-10	WHOIS	—	—	2026-05-11	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: 26.in-addr.arpa\n\norganisation: Defense Information Systems Agency\n\nnserver: CON1R.NIPR.MIL.\nnserver: CON2R.NIPR.MIL.\nnserver: EUR1R.NIPR.MIL.\nnserver: EUR2R.NIPR.MIL.\nnserver: PAC1R.NIPR.MIL.\nnserver: PAC2R.NIPR.MIL.\n\nwhois: whois.arin.net\n\nchanged: 1995-05\nchanged: 2026-05-11\nsource: IANA"}	Domain is active
2.in-addr.arpa	arpa	ICANN	HTTP 0	—	—	—	2026-07-19	—	2026-08-15	TRUE	{"DS":[{"digest":"92b30905ee75a592bcfce08a1a64928e3e4ff37d7d69cd4ccff10542bed36aca","key_tag":8204,"algorithm":13,"digest_type":2}],"NS":["ns3.afrinic.net","ns3.lacnic.net","ns4.apnic.net","pri.authdns.ripe.net","rirns.arin.net"],"SOA":{"mname":"pri.authdns.ripe.net","retry":600,"rname":"dns.ripe.net","expire":864000,"serial":1786827827,"minimum":3600,"refresh":3600},"DNSKEY":[{"flags":257,"protocol":3,"algorithm":13,"public_key":"CmjhNdzrwOHDhkRExzo7zRHrSZg8TJM2c6Nv1UwYA96avPCtwcbZvH0V5V3SaUAB8Mj8PdUMw26B8HC6AJMUvQ=="}]}	0.0000000285408	15,129,652	2026-08-18	WHOIS	—	—	2026-03-17	—	{"raw_response":"% IANA WHOIS server\n% for more information on IANA, visit http://www.iana.org\n% This query returned 1 object\n\ndomain: 2.in-addr.arpa\n\norganisation: RIPE NCC\n\nnserver: ns3.afrinic.net.\nnserver: ns3.lacnic.net.\nnserver: ns4.apnic.net.\nnserver: pri.authdns.ripe.net.\nnserver: rirns.arin.net.\nds-rdata: 8204 13 2 92b30905ee75a592bcfce08a1a64928e3e4ff37d7d69cd4ccff10542bed36aca\n\nwhois: whois.ripe.net\n\nchanged: 2009-09\nchanged: 2026-03-17\nsource: IANA"}	Domain is active
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表示 5行 / 229行 行 · All active domains · 稼働中のすべてのドメインを、TLD とドメイン種別付きで収録しています。

↓ プレビューをダウンロード（20行、無料）購入 All active domains — €29 / 月

.arpa配下のTLDサフィックス

Public Suffixリストのうち、 .arpaの1階層下にあるエントリです。

全6件のサフィックス →

TLDサフィックス	ドメインタイプ	ドメイン数	.arpaの割合（%）
.uri.arpa	ICANN	3	1.3%	表示 →
.urn.arpa	ICANN	2	0.87%	表示 →
.iris.arpa	ICANN	1	0.44%	表示 →
.e164.arpa	ICANN	1	0.44%	表示 →
.home.arpa	ICANN	1	0.44%	表示 →
.ip6.arpa	ICANN	1	0.44%	表示 →

.arpaに登録されている6件中6件のサフィックスを表示しています。すべてのTLDサフィックスを見る →

.arpaのドメインリストをダウンロードする方法

.arpaの完全なドメインリストは、1つの構造化ファイルとして提供されています。リストの各エントリは、完全なレコードとともにエクスポートされた登録済みドメイン1件です。自分でクロールする代わりに、すべてオフラインで処理できます。

用途に合ったデータセットを選び、.arpaのリストをJSONL形式（zstd圧縮）でダウンロードしてください。これは当社のAPIを支えているものと同じリストです。購入前にリストの無料サンプルを利用でき、アクセス期間中はいつでも最新のエクスポートを再ダウンロードできます。

.arpaの各リストには、ドメインごとに次の情報が含まれます：

リスト全体のDNS、RDAP、WHOISレコード、レジストラ、各種日付。
リスト内の各サイトで検出された技術。
ホスティングIP、国、PageRank / Harmonicランキング。
毎日更新されるエクスポートなので、受け取るリストが古くなることはありません。

よくある質問

.arpaドメインはいくつありますか？

webatlaは229件のアクティブな.arpaドメインを追跡しており、毎日再エクスポートされます。各ドメインにはDNS、RDAP/WHOIS、検出された技術、IP、ホスティング国、ランキングが含まれます。

.arpaドメインの完全なリストをダウンロードできますか？

はい、.arpaの完全なリストは構造化されたJSONL（zstd）としてダウンロードできます。まず無料サンプルをご利用いただけます。

各ドメインにはどのような情報が含まれ、どのくらいの頻度で更新されますか？

すべてのドメインに完全なスキーマ（DNS、RDAP/WHOIS、技術、IP・国、PageRank、Harmonic）が含まれ、毎日再エクスポートされます。

.arpaのドメインリストはどうやってダウンロードしますか？

データセットを選択すると、.arpaの完全なリストが1つのJSONLファイルとしてアカウントに届きます。1か月のアクセス期間中はいつでもリストを再ダウンロードでき、まず無料サンプルもダウンロードいただけます。

.arpaのリストはどのような形式ですか？

リストはzstdで圧縮されたJSONLとしてダウンロードでき、1行に1ドメインずつ、そのままどのデータベースやスクリプトにも読み込める形式です。まったく同じリストはAPI経由でも取得できます。

.arpaドメインだけをダウンロードできますか、それともデータベース全体もダウンロードできますか？

両方とも可能です。各データセットは単体でダウンロードできる1つのファイルなので、.arpaに必要な分だけ購入できます。またはAll dataを購入すれば、データベース全体、つまりすべてのデータセット（識別情報、ランキング、技術、DNS、RDAP/WHOIS）を結合した1ファイルを入手できます。毎日新しくエクスポートされます。