Download full list of .ac.jp domains

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

About .ac.jp Database preview Top technologies Top countries Download

About .ac.jp

.ac.jp is a multi-level public suffix sitting one level below .jp. Suffixes like this exist because registries reserve a second level for specific registrant categories. Registrants treat them as if they were top-level TLDs, and so do webatla datasets.

At a glance

Suffix.ac.jp

Parent TLD.jp

RegistryJapan Registry Services Co., Ltd. (JPRS)

Domains3,696

All figures as of Aug 29, 2026

New domain registrations

1 last week

2 last month

Active domains

3,696

registered and active domains in .ac.jp zone

Active websites

2,916

active websites in .ac.jp zone

DNS

3,681

domains with DNS records

Countries

5

countries represented (by hosting IP)

RDAP & WHOIS

3,696

domains with RDAP & WHOIS records

Database preview of .ac.jp domains

5 sample rows from the live database. Switch the dataset to see what each one contains, then preview the file or buy the full dataset.

webatla-ac-jp-all-2026-08-29.jsonl.zst · 3,696 rows · 23 columns Daily fresh export

Domain	TLD suffix	TLD	Domain type
tsuji.ac.jp	ac.jp	jp	ICANN
kyoto-u.ac.jp	ac.jp	jp	ICANN
tohoku.ac.jp	ac.jp	jp	ICANN
umin.ac.jp	ac.jp	jp	ICANN
titech.ac.jp	ac.jp	jp	ICANN
…	…	…	…

Domain	TLD suffix	TLD	Domain type	Country by IP	PR value	Harmonic value	Domain creation date	Domain expiration date
tsuji.ac.jp	ac.jp	jp	ICANN	JP	0.0000045258	17,306,594	—	—
kyoto-u.ac.jp	ac.jp	jp	ICANN	US	0.00000349173	17,492,644	—	—
tohoku.ac.jp	ac.jp	jp	ICANN	JP	0.00000216462	17,211,602	—	—
umin.ac.jp	ac.jp	jp	ICANN	JP	0.00000143648	16,820,648	—	—
titech.ac.jp	ac.jp	jp	ICANN	JP	0.00000136249	17,416,818	—	—
…	…	…	…	…	…	…	…	…

Domain	TLD suffix	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
tsuji.ac.jp	ac.jp	jp	ICANN	HTTP 200	164.46.39.54	JP	{"tiktok":["https://tiktok.com/@tsujicho"],"threads":["https://threads.net/@tsujicho"],"youtube":["https://youtube.com/user/tsujichopress"],"facebook":["https://facebook.com/tsujicho"],"instagram":["https://instagram.com/tsujicho"],"x-twitter":["https://twitter.com/tsujichopress"]}	2026-08-21	Google Analytics G-95K6FTECJ4 UA-21110554-1 UA-21110554-4 UA-21110554-5 UA-21110554-6 +4, Google Tag Manager GTM-KBSWP2VR GTM-W2BZSGH +1, Slick, HTTP/2, jQuery, Dropbox, Favicon, Open Graph, Salesforce, Google Maps	0.0000045258	17,306,594	—	—
kyoto-u.ac.jp	ac.jp	jp	ICANN	HTTP 200	151.101.130.132	US	{"youtube":["https://youtube.com/channel/UC3ikR0k6iSoz7DcdRsXS2xA/videos"],"facebook":["https://ja-jp.facebook.com/Kyoto.Univ"],"instagram":["https://instagram.com/kyotouniversity.jp"],"x-twitter":["https://twitter.com/univkyoto"]}	2026-08-08	PHP, Nginx, Drupal 11, HTTP/3, jQuery, Favicon, Varnish, hreflang, Open Graph, Google Font API	0.00000349173	17,492,644	—	—
tohoku.ac.jp	ac.jp	jp	ICANN	HTTP 200	130.34.11.111	JP	{"youtube":["https://youtube.com/user/tohokuuniversitypr"],"facebook":["https://facebook.com/TohokuUniversityPR"],"linkedin":["https://linkedin.com/school/tohoku-univ"],"instagram":["https://instagram.com/tohoku_uni"],"x-twitter":["https://x.com/TohokuUniPR"]}	2026-08-20	Google Analytics GA4 G-CVZ2VYGBBD G-ZRRM4F3X0B +1, jQuery, Favicon, Typekit, jsDelivr, Open Graph, Priority Hints, Google Font API, Google Workspace, Apache HTTP Server	0.00000216462	17,211,602	—	—
umin.ac.jp	ac.jp	jp	ICANN	HTTP 200	130.69.92.10	JP	{"x-twitter":["https://twitter.com/umin_announce"]}	2026-08-21	HSTS, Slick, HTTP/2, jQuery, Favicon, Twitter, Modernizr, Open Graph, DreamWeaver, ZURB Foundation	0.00000143648	16,820,648	—	—
titech.ac.jp	ac.jp	jp	ICANN	HTTP 200	131.112.125.17	JP	{"youtube":["https://youtube.com/@sciencetokyo_ja"],"facebook":["https://facebook.com/sciencetokyo.official.ja"],"linkedin":["https://linkedin.com/school/sciencetokyo"],"instagram":["https://instagram.com/sciencetokyo_ja"],"x-twitter":["https://x.com/sciencetokyo_ja"]}	2026-08-20	Google Analytics GA4 G-VKBJ61GEPE UA-7676767-1 +1, HSTS, HTTP/2, jQuery 3.4.1, Favicon, Open Graph, Apache HTTP Server, Google Site Verification	0.00000136249	17,416,818	—	—
…	…	…	…	…	…	…	…	…	…	…	…	…	…

Domain	TLD suffix	TLD	Domain type	DNS last data checked	DNS Status	DNS records
tsuji.ac.jp	ac.jp	jp	ICANN	2026-08-24	TRUE	{"A":["164.46.39.54"],"MX":[{"host":"tsuji-ac-jp.mail.protection.outlook.com","priority":0}],"NS":["01.dnsv.jp","02.dnsv.jp","03.dnsv.jp","04.dnsv.jp"],"SOA":{"mname":"01.dnsv.jp","retry":900,"rname":"hostmaster.dnsv.jp","expire":604800,"serial":1781769226,"minimum":300,"refresh":3600},"TXT":["MS=ms15058219","apple-domain-verification=gW4altRZ4mdAqTkg","dropbox-domain-verification=mqn933l7urre","v=spf1 include:_spf.google.com include:_spf.salesforce.com ip4:106.139.212.49 ip4:211.1.233.128 include:crmstyle.com include:digital-knowledge.sm.air.ne.jp include:spf.protection.outlook.com include:tsushin.tsuji.ac.jp ~all"]}
kyoto-u.ac.jp	ac.jp	jp	ICANN	2026-08-22	TRUE	{"A":["151.101.130.132","151.101.194.132","151.101.2.132","151.101.66.132"],"DS":[{"digest":"8543d38d7fb4deeae4d88276534d4cb1704d22ae77b8c0834c3c7f6c3d70ae24","key_tag":54071,"algorithm":8,"digest_type":2}],"MX":[{"host":"ALT1.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT2.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT3.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ALT4.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ASPMX.L.GOOGLE.COM","priority":1}],"NS":["dns-x.sinet.ad.jp","ns1.kuins.kyoto-u.ac.jp","ns2.kuins.kyoto-u.ac.jp"],"SOA":{"mname":"ns1.kuins.kyoto-u.ac.jp","retry":900,"rname":"ns-admin.kuins.kyoto-u.ac.jp","expire":3600000,"serial":2026081902,"minimum":900,"refresh":3600},"TXT":["096E8117BF3F3C52587EF8D38072CB7E","google-site-verification=IfeAI0qvDlYyRmUs9TWnqRjbn73rY952nPsLW0SSRV0","google-site-verification=Uk0PXHp-fbTZ0wgGhAq41dJmXuyWKJXy8rmC6YjxmEQ","google-site-verification=r9jh1rPOLTcUhjXxbrq-YGZ6prP1hRttFfhMR4G2Mks","v=spf1 include:_spf.iimc.kyoto-u.ac.jp ~all"],"DNSKEY":[{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAZGdZKearOGdRd2ex7d+4LW/9qKTHdzeMWYcyzxDW3MbG46iykAT918Ow6ofPB8JMKfpSxeIFv05z9fjKb6Bh79vgqo6GEpAjPUkiFHTP1AL5tND97mbc6qsVNSBz7T7uR0xWQdgHWw3WguUFIiYRxfv8TU/idmbfUrcJAK6JgzZ"},{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAZtOa3LOSYYn/IFRMoyvS1M0Dy7hgiZI5/En/hCqLxFx5nZIoL5XP4hlkQlVZSGN2+pFZUzHorBdVWC+WWntlK8Dnsjg0dhBRbAfgkYKt550nd3obUKsQD3PL2AqWgCV4aFj7Hr9s9f3FWgxvoErioBYe6p3P0WWKnZAnazYbgHv"},{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAav9RPQI5e0OyvSKzeuzTXXvL/TZznp1O8ujCJgop/xJuF3oQ2S+wjU+qojNFC1Ty9lEXuzLFLJ+5W9v0TU64dB2b8291a0sh5zfIIwlZ83/kLodDO+w/62y6qDbXbQuxqw5GX69LnbBOfXMoqzxtEPVLRoROhuv9XYXXTVr8DOz"},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAd02vTk7Wgpg3+dL3tS4ikMPFETPq3dlZyYDEdOdsZ66BQp9Gatxq/oc/FhbJQGKJKR38f3oZp4PM/HbAWWQbqp7qXuRV5WmcofllMGssSnngr7UJTV6oM+pov1s+NYYkWtnigXZ5ycHMLN6/dgG6c0OXQsFBgMEOLvogcjDbj20wG2vALw6e8Muaf3Oq1bABuDiBvQGeSlfW8ykRsrv4EbLiIe6ZXDtAPXia1mL0q71Conz/yzq2FS0sHKt0wG0jogw3vKztTTpBVIcwLK+jIyGQpwaD6Il7msYmffmpTTVLycl6Q0I7zHYJFW9RdCoy7cf+wBaBlGlG75mvoqz/M8="}]}
tohoku.ac.jp	ac.jp	jp	ICANN	2026-08-25	TRUE	{"A":["130.34.11.111"],"MX":[{"host":"ALT1.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT2.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT3.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ALT4.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ASPMX.L.GOOGLE.COM","priority":1}],"NS":["dns-x.sinet.ad.jp","ns1.tohoku.ac.jp","ns2.tohoku.ac.jp","ns4.tohoku.ac.jp"],"SOA":{"mname":"ns1.tohoku.ac.jp","retry":1800,"rname":"postmaster.tohoku.ac.jp","expire":2419200,"serial":2026080600,"minimum":1200,"refresh":3600},"TXT":["C8E9C1C6E32530A235EC4678581BF971","MS=F57F6D585ABC3948FCE12DD3A37737B914D77ABF","adobe-idp-site-verification=479f2f198c8f61d8af3fb4114324a2b7b8fbe76124576bc04ae429bd236ed145","google-site-verification=yDn9bqi4HP0IxDzINOPSAfHlhHT6-ExApZIeGXxIemg","v=spf1 include:_spf.google.com ~all"]}
umin.ac.jp	ac.jp	jp	ICANN	2026-08-16	TRUE	{"A":["130.69.92.10"],"MX":[{"host":"mailgw.umin.ac.jp","priority":10}],"NS":["db.umin.ac.jp","ilsa.umin.ac.jp"],"SOA":{"mname":"db.umin.ac.jp","retry":3600,"rname":"postmast-ctr.umin.ac.jp","expire":604800,"serial":2026073000,"minimum":86400,"refresh":10800},"TXT":["google-site-verification=xR7VNy0VZWXBo71NTMR4jKzU6U8Tcu3baafEzuCAsjc","v=spf1 +ip4:130.69.92.0/24 +ip4:130.69.94.0/24 ~all"]}
titech.ac.jp	ac.jp	jp	ICANN	2026-08-24	TRUE	{"A":["131.112.125.17"],"MX":[{"host":"filter.nap.gsic.titech.ac.jp","priority":10}],"NS":["ns.fujisawa.wide.ad.jp","titechns2-o.noc.titech.ac.jp","titechns2-s.noc.titech.ac.jp"],"SOA":{"mname":"ns1.noc.titech.ac.jp","retry":600,"rname":"noc-admin.noc.titech.ac.jp","expire":3600000,"serial":2026071401,"minimum":3600,"refresh":3600},"TXT":["google-site-verification=sEA5LrILIEApBN_TmrcwgzYpGxnjq6bV9lluZGkgTJE","v=spf1 include:_spf.m.titech.ac.jp ~all"]}
…	…	…	…	…	…	…

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
tsuji.ac.jp	2026-08-28	WHOIS	—	—	2026-06-18	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] TSUJI.AC.JP\r\ng. [Organization] Tsuji Culinary Institute\r\nl. [Organization Type] educational corporation\r\nm. [Administrative Contact] NN85854JP\r\nn. [Technical Contact] NN76891JP\r\np. [Name Server] 01.dnsv.jp\r\np. [Name Server] 02.dnsv.jp\r\np. [Name Server] 03.dnsv.jp\r\np. [Name Server] 04.dnsv.jp\r\ns. [Signing Key] \r\n[State] Connected (2026/12/31)\r\n[Registered Date] 1995/12/25\r\n[Connected Date] 1996/03/05\r\n[Last Update] 2026/06/18 16:53:48 (JST)"}	Domain is active
kyoto-u.ac.jp	2026-08-29	WHOIS	—	—	2026-05-21	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] KYOTO-U.AC.JP\r\ng. [Organization] Kyoto University\r\nl. [Organization Type] University\r\nm. [Administrative Contact] MN41916JP\r\nn. [Technical Contact] MN41916JP\r\np. [Name Server] ns1.kuins.kyoto-u.ac.jp\r\np. [Name Server] ns2.kuins.kyoto-u.ac.jp\r\np. [Name Server] dns-x.sinet.ad.jp\r\ns. [Signing Key] 54071 8 2 (\r\n 8543D38D7FB4DEEAE4D88276534D4CB1\r\n 704D22AE77B8C0834C3C7F6C3D70AE24 )\r\n[State] Connected (2027/03/31)\r\n[Registered Date] \r\n[Connected Date] 2012/01/20\r\n[Last Update] 2026/05/21 10:00:44 (JST)"}	Domain is active
tohoku.ac.jp	2026-08-29	WHOIS	—	—	2026-04-01	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] TOHOKU.AC.JP\r\ng. [Organization] Tohoku University\r\nl. [Organization Type] University\r\nm. [Administrative Contact] NM22956JP\r\nn. [Technical Contact] NM22956JP\r\np. [Name Server] ns1.tohoku.ac.jp\r\np. [Name Server] ns2.tohoku.ac.jp\r\np. [Name Server] ns4.tohoku.ac.jp\r\np. [Name Server] dns-x.sinet.ad.jp\r\ns. [Signing Key] \r\n[State] Connected (2027/03/31)\r\n[Registered Date] \r\n[Connected Date] 2012/01/19\r\n[Last Update] 2026/04/01 01:00:51 (JST)"}	Domain is active
umin.ac.jp	2026-08-21	WHOIS	—	—	2026-08-01	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] UMIN.AC.JP\r\ng. [Organization] University Hospital Medical Information Network\r\nl. [Organization Type] AC\r\nm. [Administrative Contact] TK4944JP\r\nn. [Technical Contact] TK566JP\r\np. [Name Server] db.umin.ac.jp\r\np. [Name Server] ilsa.umin.ac.jp\r\ns. [Signing Key] \r\n[State] Connected (2027/07/31)\r\n[Registered Date] 1996/07/30\r\n[Connected Date] 1997/04/08\r\n[Last Update] 2026/08/01 01:03:29 (JST)"}	Domain is active
titech.ac.jp	2026-08-29	WHOIS	—	—	2026-04-01	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] TITECH.AC.JP\r\ng. [Organization] Institute of Science Tokyo\r\nl. [Organization Type] University\r\nm. [Administrative Contact] YK87359JP\r\nn. [Technical Contact] YS79730JP\r\np. [Name Server] ns.fujisawa.wide.ad.jp\r\np. [Name Server] titechns2-o.noc.titech.ac.jp\r\np. [Name Server] titechns2-s.noc.titech.ac.jp\r\ns. [Signing Key] \r\n[State] Connected (2027/03/31)\r\n[Registered Date] \r\n[Connected Date] 2025/05/26\r\n[Last Update] 2026/04/01 01:01:40 (JST)"}	Domain is active
…	…	…	…	…	…	…	…	…

Domain	TLD suffix	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
tsuji.ac.jp	ac.jp	jp	ICANN	HTTP 200	164.46.39.54	JP	{"tiktok":["https://tiktok.com/@tsujicho"],"threads":["https://threads.net/@tsujicho"],"youtube":["https://youtube.com/user/tsujichopress"],"facebook":["https://facebook.com/tsujicho"],"instagram":["https://instagram.com/tsujicho"],"x-twitter":["https://twitter.com/tsujichopress"]}	2026-08-21	Google Analytics G-95K6FTECJ4 UA-21110554-1 UA-21110554-4 UA-21110554-5 UA-21110554-6 +4, Google Tag Manager GTM-KBSWP2VR GTM-W2BZSGH +1, Slick, HTTP/2, jQuery, Dropbox, Favicon, Open Graph, Salesforce, Google Maps	2026-08-24	TRUE	{"A":["164.46.39.54"],"MX":[{"host":"tsuji-ac-jp.mail.protection.outlook.com","priority":0}],"NS":["01.dnsv.jp","02.dnsv.jp","03.dnsv.jp","04.dnsv.jp"],"SOA":{"mname":"01.dnsv.jp","retry":900,"rname":"hostmaster.dnsv.jp","expire":604800,"serial":1781769226,"minimum":300,"refresh":3600},"TXT":["MS=ms15058219","apple-domain-verification=gW4altRZ4mdAqTkg","dropbox-domain-verification=mqn933l7urre","v=spf1 include:_spf.google.com include:_spf.salesforce.com ip4:106.139.212.49 ip4:211.1.233.128 include:crmstyle.com include:digital-knowledge.sm.air.ne.jp include:spf.protection.outlook.com include:tsushin.tsuji.ac.jp ~all"]}	0.0000045258	17,306,594	2026-08-28	WHOIS	—	—	2026-06-18	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] TSUJI.AC.JP\r\ng. [Organization] Tsuji Culinary Institute\r\nl. [Organization Type] educational corporation\r\nm. [Administrative Contact] NN85854JP\r\nn. [Technical Contact] NN76891JP\r\np. [Name Server] 01.dnsv.jp\r\np. [Name Server] 02.dnsv.jp\r\np. [Name Server] 03.dnsv.jp\r\np. [Name Server] 04.dnsv.jp\r\ns. [Signing Key] \r\n[State] Connected (2026/12/31)\r\n[Registered Date] 1995/12/25\r\n[Connected Date] 1996/03/05\r\n[Last Update] 2026/06/18 16:53:48 (JST)"}	Domain is active
kyoto-u.ac.jp	ac.jp	jp	ICANN	HTTP 200	151.101.130.132	US	{"youtube":["https://youtube.com/channel/UC3ikR0k6iSoz7DcdRsXS2xA/videos"],"facebook":["https://ja-jp.facebook.com/Kyoto.Univ"],"instagram":["https://instagram.com/kyotouniversity.jp"],"x-twitter":["https://twitter.com/univkyoto"]}	2026-08-08	PHP, Nginx, Drupal 11, HTTP/3, jQuery, Favicon, Varnish, hreflang, Open Graph, Google Font API	2026-08-22	TRUE	{"A":["151.101.130.132","151.101.194.132","151.101.2.132","151.101.66.132"],"DS":[{"digest":"8543d38d7fb4deeae4d88276534d4cb1704d22ae77b8c0834c3c7f6c3d70ae24","key_tag":54071,"algorithm":8,"digest_type":2}],"MX":[{"host":"ALT1.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT2.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT3.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ALT4.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ASPMX.L.GOOGLE.COM","priority":1}],"NS":["dns-x.sinet.ad.jp","ns1.kuins.kyoto-u.ac.jp","ns2.kuins.kyoto-u.ac.jp"],"SOA":{"mname":"ns1.kuins.kyoto-u.ac.jp","retry":900,"rname":"ns-admin.kuins.kyoto-u.ac.jp","expire":3600000,"serial":2026081902,"minimum":900,"refresh":3600},"TXT":["096E8117BF3F3C52587EF8D38072CB7E","google-site-verification=IfeAI0qvDlYyRmUs9TWnqRjbn73rY952nPsLW0SSRV0","google-site-verification=Uk0PXHp-fbTZ0wgGhAq41dJmXuyWKJXy8rmC6YjxmEQ","google-site-verification=r9jh1rPOLTcUhjXxbrq-YGZ6prP1hRttFfhMR4G2Mks","v=spf1 include:_spf.iimc.kyoto-u.ac.jp ~all"],"DNSKEY":[{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAZGdZKearOGdRd2ex7d+4LW/9qKTHdzeMWYcyzxDW3MbG46iykAT918Ow6ofPB8JMKfpSxeIFv05z9fjKb6Bh79vgqo6GEpAjPUkiFHTP1AL5tND97mbc6qsVNSBz7T7uR0xWQdgHWw3WguUFIiYRxfv8TU/idmbfUrcJAK6JgzZ"},{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAZtOa3LOSYYn/IFRMoyvS1M0Dy7hgiZI5/En/hCqLxFx5nZIoL5XP4hlkQlVZSGN2+pFZUzHorBdVWC+WWntlK8Dnsjg0dhBRbAfgkYKt550nd3obUKsQD3PL2AqWgCV4aFj7Hr9s9f3FWgxvoErioBYe6p3P0WWKnZAnazYbgHv"},{"flags":256,"protocol":3,"algorithm":8,"public_key":"AwEAAav9RPQI5e0OyvSKzeuzTXXvL/TZznp1O8ujCJgop/xJuF3oQ2S+wjU+qojNFC1Ty9lEXuzLFLJ+5W9v0TU64dB2b8291a0sh5zfIIwlZ83/kLodDO+w/62y6qDbXbQuxqw5GX69LnbBOfXMoqzxtEPVLRoROhuv9XYXXTVr8DOz"},{"flags":257,"protocol":3,"algorithm":8,"public_key":"AwEAAd02vTk7Wgpg3+dL3tS4ikMPFETPq3dlZyYDEdOdsZ66BQp9Gatxq/oc/FhbJQGKJKR38f3oZp4PM/HbAWWQbqp7qXuRV5WmcofllMGssSnngr7UJTV6oM+pov1s+NYYkWtnigXZ5ycHMLN6/dgG6c0OXQsFBgMEOLvogcjDbj20wG2vALw6e8Muaf3Oq1bABuDiBvQGeSlfW8ykRsrv4EbLiIe6ZXDtAPXia1mL0q71Conz/yzq2FS0sHKt0wG0jogw3vKztTTpBVIcwLK+jIyGQpwaD6Il7msYmffmpTTVLycl6Q0I7zHYJFW9RdCoy7cf+wBaBlGlG75mvoqz/M8="}]}	0.00000349173	17,492,644	2026-08-29	WHOIS	—	—	2026-05-21	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] KYOTO-U.AC.JP\r\ng. [Organization] Kyoto University\r\nl. [Organization Type] University\r\nm. [Administrative Contact] MN41916JP\r\nn. [Technical Contact] MN41916JP\r\np. [Name Server] ns1.kuins.kyoto-u.ac.jp\r\np. [Name Server] ns2.kuins.kyoto-u.ac.jp\r\np. [Name Server] dns-x.sinet.ad.jp\r\ns. [Signing Key] 54071 8 2 (\r\n 8543D38D7FB4DEEAE4D88276534D4CB1\r\n 704D22AE77B8C0834C3C7F6C3D70AE24 )\r\n[State] Connected (2027/03/31)\r\n[Registered Date] \r\n[Connected Date] 2012/01/20\r\n[Last Update] 2026/05/21 10:00:44 (JST)"}	Domain is active
tohoku.ac.jp	ac.jp	jp	ICANN	HTTP 200	130.34.11.111	JP	{"youtube":["https://youtube.com/user/tohokuuniversitypr"],"facebook":["https://facebook.com/TohokuUniversityPR"],"linkedin":["https://linkedin.com/school/tohoku-univ"],"instagram":["https://instagram.com/tohoku_uni"],"x-twitter":["https://x.com/TohokuUniPR"]}	2026-08-20	Google Analytics GA4 G-CVZ2VYGBBD G-ZRRM4F3X0B +1, jQuery, Favicon, Typekit, jsDelivr, Open Graph, Priority Hints, Google Font API, Google Workspace, Apache HTTP Server	2026-08-25	TRUE	{"A":["130.34.11.111"],"MX":[{"host":"ALT1.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT2.ASPMX.L.GOOGLE.COM","priority":5},{"host":"ALT3.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ALT4.ASPMX.L.GOOGLE.COM","priority":10},{"host":"ASPMX.L.GOOGLE.COM","priority":1}],"NS":["dns-x.sinet.ad.jp","ns1.tohoku.ac.jp","ns2.tohoku.ac.jp","ns4.tohoku.ac.jp"],"SOA":{"mname":"ns1.tohoku.ac.jp","retry":1800,"rname":"postmaster.tohoku.ac.jp","expire":2419200,"serial":2026080600,"minimum":1200,"refresh":3600},"TXT":["C8E9C1C6E32530A235EC4678581BF971","MS=F57F6D585ABC3948FCE12DD3A37737B914D77ABF","adobe-idp-site-verification=479f2f198c8f61d8af3fb4114324a2b7b8fbe76124576bc04ae429bd236ed145","google-site-verification=yDn9bqi4HP0IxDzINOPSAfHlhHT6-ExApZIeGXxIemg","v=spf1 include:_spf.google.com ~all"]}	0.00000216462	17,211,602	2026-08-29	WHOIS	—	—	2026-04-01	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] TOHOKU.AC.JP\r\ng. [Organization] Tohoku University\r\nl. [Organization Type] University\r\nm. [Administrative Contact] NM22956JP\r\nn. [Technical Contact] NM22956JP\r\np. [Name Server] ns1.tohoku.ac.jp\r\np. [Name Server] ns2.tohoku.ac.jp\r\np. [Name Server] ns4.tohoku.ac.jp\r\np. [Name Server] dns-x.sinet.ad.jp\r\ns. [Signing Key] \r\n[State] Connected (2027/03/31)\r\n[Registered Date] \r\n[Connected Date] 2012/01/19\r\n[Last Update] 2026/04/01 01:00:51 (JST)"}	Domain is active
umin.ac.jp	ac.jp	jp	ICANN	HTTP 200	130.69.92.10	JP	{"x-twitter":["https://twitter.com/umin_announce"]}	2026-08-21	HSTS, Slick, HTTP/2, jQuery, Favicon, Twitter, Modernizr, Open Graph, DreamWeaver, ZURB Foundation	2026-08-16	TRUE	{"A":["130.69.92.10"],"MX":[{"host":"mailgw.umin.ac.jp","priority":10}],"NS":["db.umin.ac.jp","ilsa.umin.ac.jp"],"SOA":{"mname":"db.umin.ac.jp","retry":3600,"rname":"postmast-ctr.umin.ac.jp","expire":604800,"serial":2026073000,"minimum":86400,"refresh":10800},"TXT":["google-site-verification=xR7VNy0VZWXBo71NTMR4jKzU6U8Tcu3baafEzuCAsjc","v=spf1 +ip4:130.69.92.0/24 +ip4:130.69.94.0/24 ~all"]}	0.00000143648	16,820,648	2026-08-21	WHOIS	—	—	2026-08-01	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] UMIN.AC.JP\r\ng. [Organization] University Hospital Medical Information Network\r\nl. [Organization Type] AC\r\nm. [Administrative Contact] TK4944JP\r\nn. [Technical Contact] TK566JP\r\np. [Name Server] db.umin.ac.jp\r\np. [Name Server] ilsa.umin.ac.jp\r\ns. [Signing Key] \r\n[State] Connected (2027/07/31)\r\n[Registered Date] 1996/07/30\r\n[Connected Date] 1997/04/08\r\n[Last Update] 2026/08/01 01:03:29 (JST)"}	Domain is active
titech.ac.jp	ac.jp	jp	ICANN	HTTP 200	131.112.125.17	JP	{"youtube":["https://youtube.com/@sciencetokyo_ja"],"facebook":["https://facebook.com/sciencetokyo.official.ja"],"linkedin":["https://linkedin.com/school/sciencetokyo"],"instagram":["https://instagram.com/sciencetokyo_ja"],"x-twitter":["https://x.com/sciencetokyo_ja"]}	2026-08-20	Google Analytics GA4 G-VKBJ61GEPE UA-7676767-1 +1, HSTS, HTTP/2, jQuery 3.4.1, Favicon, Open Graph, Apache HTTP Server, Google Site Verification	2026-08-24	TRUE	{"A":["131.112.125.17"],"MX":[{"host":"filter.nap.gsic.titech.ac.jp","priority":10}],"NS":["ns.fujisawa.wide.ad.jp","titechns2-o.noc.titech.ac.jp","titechns2-s.noc.titech.ac.jp"],"SOA":{"mname":"ns1.noc.titech.ac.jp","retry":600,"rname":"noc-admin.noc.titech.ac.jp","expire":3600000,"serial":2026071401,"minimum":3600,"refresh":3600},"TXT":["google-site-verification=sEA5LrILIEApBN_TmrcwgzYpGxnjq6bV9lluZGkgTJE","v=spf1 include:_spf.m.titech.ac.jp ~all"]}	0.00000136249	17,416,818	2026-08-29	WHOIS	—	—	2026-04-01	—	{"raw_response":"[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] TITECH.AC.JP\r\ng. [Organization] Institute of Science Tokyo\r\nl. [Organization Type] University\r\nm. [Administrative Contact] YK87359JP\r\nn. [Technical Contact] YS79730JP\r\np. [Name Server] ns.fujisawa.wide.ad.jp\r\np. [Name Server] titechns2-o.noc.titech.ac.jp\r\np. [Name Server] titechns2-s.noc.titech.ac.jp\r\ns. [Signing Key] \r\n[State] Connected (2027/03/31)\r\n[Registered Date] \r\n[Connected Date] 2025/05/26\r\n[Last Update] 2026/04/01 01:01:40 (JST)"}	Domain is active
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Showing 5 of 3,696 rows · All active domains · Every live domain with its TLD and domain type.

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Top technologies on .ac.jp

Technology	Sites	Share
jQuery	2K	65.1%
Favicon	2K	61.1%
Google Analytics	2K	59.6%
Open Graph	2K	51.5%
Google Site Verification	1K	48.8%

Top countries on .ac.jp

Country	Sites	Share
🇯🇵 Japan	3K	95.2%
🇺🇸 United States	137	4.7%
🇩🇪 Germany	2	0.1%
🇫🇷 France	1	0.0%
🇨🇦 Canada	1	0.0%

How to download the .ac.jp domain list

The complete .ac.jp domain list is available as one structured file. Every entry in the list is a single registered domain exported with its full record, so you can work it all offline instead of crawling it yourself.

Pick the dataset that fits your use case, then download the .ac.jp list in JSONL (zstd-compressed), the very same list that powers our API. A free sample of the list is available before you pay, and you can re-download the latest export any time during your access month.

Each .ac.jp list includes, for every domain:

DNS, RDAP and WHOIS records, registrar and dates across the full list.
Detected technologies for each site in the list.
Hosting IP, country and PageRank / Harmonic ranking.
A daily-refreshed export, so the list you receive is never stale.

Frequently asked questions

How many .ac.jp domains are there?

webatla tracks 4K active .ac.jp domains, re-exported every day, each with its DNS, RDAP/WHOIS, detected technologies, IP, hosting country and ranking.

Can I download the full list of .ac.jp domains?

Yes, the full .ac.jp list downloads as structured JSONL (zstd). A free sample is available first.

What's included for each domain, and how fresh is it?

Every domain carries the full schema (DNS, RDAP/WHOIS, technologies, IP & country, PageRank and Harmonic) re-exported daily.

How do I download the .ac.jp domain list?

Choose a dataset, and the full .ac.jp list is then yours as a single JSONL file in your account. You can re-download the list anytime during your access month, and a free sample is available to download first.

What format is the .ac.jp list in?

The list is yours to download as JSONL compressed with zstd, one domain per line, ready to load straight into any database or script. The exact same list is also reachable through our API.

Can I download just the .ac.jp domains, or the whole database?

Both. Each dataset is a single downloadable file, buy just the one you need for .ac.jp. Or buy All data for the entire database: every dataset combined (identity, ranking, technologies, DNS and RDAP/WHOIS) in one file. Daily fresh export.