AS37917 University of Tsukuba
AS37917 (UTINS) is registered to University of Tsukuba in JP, through APNIC. It originates 3 prefixes in the global routing table.
Who holds AS37917
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
WHOIS recordAPNIC
% [whois.apnic.net] % Whois data copyright terms http://www.apnic.net/db/dbcopyright.html % Information related to 'AS37888 - AS37927' as-block: AS37888 - AS37927 descr: JPNIC-2Byte-ASBLOCK-AP descr: for assignment to JPNIC members country: JP admin-c: JNIC1-AP tech-c: JNIC1-AP remarks: Authoritative information regarding AS Number remarks: assignments made from within this block can be remarks: queried at whois.nic.ad.jp. To only display English output, remarks: add '/e' at the end of command, remarks: e.g. 'whois -h whois.nic.ad.jp xxx/e'. mnt-by: APNIC-HM mnt-lower: MAINT-JPNIC last-modified: 2009-11-19T01:11:45Z source: APNIC role: Japan Network Information Center address: Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda address: Chiyoda-ku, Tokyo 101-0047, Japan country: JP phone: +81-3-5297-2311 fax-no: +81-3-5297-2312 e-mail: hostmaster@nic.ad.jp admin-c: JI13-AP tech-c: JE53-AP nic-hdl: JNIC1-AP mnt-by: MAINT-JPNIC last-modified: 2022-01-05T03:04:02Z source: APNIC % Information related to 'AS37888 - AS38911' as-block: AS37888 - AS38911 descr: APNIC ASN block remarks: These AS numbers are further assigned by APNIC remarks: to APNIC members and end-users in the APNIC region admin-c: HM20-AP tech-c: HM20-AP mnt-by: APNIC-HM mnt-lower: APNIC-HM last-modified: 2009-09-29T06:04:16Z source: APNIC role: APNIC Hostmaster address: PO Box 3646 address: South Brisbane address: QLD 4101 country: AU phone: +61 7 3858 3100 fax-no: +61 7 3858 3199 e-mail: helpdesk@apnic.net admin-c: AMS11-AP tech-c: AH256-AP nic-hdl: HM20-AP remarks: Administrator for APNIC notify: hostmaster@apnic.net mnt-by: MAINT-APNIC-AP last-modified: 2026-08-26T00:40:00Z source: APNIC % Information related to 'AS37917' aut-num: AS37917 as-name: UTINS descr: University of Tsukuba import: from AS2907 100 accept ANY import: from AS18127 100 accept ANY export: to AS2907 announce AS37917 export: to AS18127 announce AS37917 country: JP admin-c: KI7984JP tech-c: AM1479JP tech-c: AS3586JP tech-c: KK6630JP last-modified: 2007-06-11T22:01:44Z remarks: This information has been partially mirrored by APNIC from remarks: JPNIC. To obtain more specific information, please use the remarks: JPNIC WHOIS Gateway at remarks: http://www.nic.ad.jp/en/db/whois/en-gateway.html or remarks: whois.nic.ad.jp for WHOIS client. (The WHOIS client remarks: defaults to Japanese output, use the /e switch for English remarks: output) source: JPNIC % This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-US2)
What AS37917 announces
Prefixes originated by AS37917 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
Who AS37917 is reached through
The AS just before AS37917 in the paths our looking glass collectors hold, for 3 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.
Routing registry objects
From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.
Route objects with origin AS37917: JPIRR 3