18091 TEIKYO-U Teikyo University, JP
Adjacency: 2 Upstream: 2 Downstream: 0
Upstream Adjacent AS list
AS2497 IIJ Internet Initiative Japan Inc., JP
AS2907 SINET-AS Research Organization of Information and Systems, National Institute of Informatics, JP
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 24308 AS18091 ORIGIN Originate: 2048 /21.00 Transit: 0 /0.00 TEIKYO-U Teikyo University, JP
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 20837 AS18091 TEIKYO-U Teikyo University, JP 3 2 1 2 1 33.33% Prefix AS Path Aggregation Suggestion 202.253.108.0/22 4777 2497 18091 202.253.108.0/22 4777 2907 18091 + Announce - aggregate of 202.253.108.0/23 (4777 2907 18091) and 202.253.110.0/23 (4777 2907 18091) 202.253.108.0/23 4777 2907 18091 - Withdrawn - aggregated with 202.253.110.0/23 (4777 2907 18091) 202.253.110.0/23 4777 2907 18091 - Withdrawn - aggregated with 202.253.108.0/23 (4777 2907 18091)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS18091 3 More Specifics 3 Total Advertisements TEIKYO-U Teikyo University, JP
202.253.108.0/22 202.240.0.0/12
202.253.108.0/23 202.240.0.0/12
202.253.110.0/23 202.240.0.0/12
whois: 402332
IANA has recorded AS18091 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS18091\n % [whois.apnic.net]
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% Information related to 'AS18085 - AS18098'
as-block: AS18085 - AS18098
descr: JPNIC-2Byte-ASBLOCK-AP
descr: for assignment to JPNIC members
country: JP
admin-c: JNIC1-AP
tech-c: JNIC1-AP
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last-modified: 2018-07-09T01:00:49Z
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
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last-modified: 2022-01-05T03:04:02Z
source: APNIC
% Information related to 'AS18091'
% Abuse contact for 'AS18091' is 'hostmaster@nic.ad.jp'
aut-num: AS18091
as-name: TUC-NET
descr: Teikyo University
descr: Toyosatodai 1-1, Utsunomiya, Tochigi 320,Japan
admin-c: JNIC1-AP
tech-c: JNIC1-AP
remarks: Email address for spam or abuse complaints : it-house-staff@it-house.teikyo-u.ac.jp
country: JP
mnt-by: MAINT-JPNIC
mnt-lower: MAINT-JPNIC
mnt-irt: IRT-JPNIC-JP
last-modified: 2024-10-03T08:01:12Z
source: APNIC
irt: IRT-JPNIC-JP
address: Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address: Chiyoda-ku, Tokyo 101-0047, japan
e-mail: hostmaster@nic.ad.jp
abuse-mailbox: hostmaster@nic.ad.jp
phone: +81-3-5297-2311
fax-no: +81-3-5297-2312
admin-c: JNIC1-AP
tech-c: JNIC1-AP
auth: # Filtered
remarks: hostmaster@nic.ad.jp was validated on 2024-11-27
mnt-by: MAINT-JPNIC
last-modified: 2025-09-04T01:00:00Z
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 'AS18091'
aut-num: AS18091
as-name: TEIKYO-U
descr: Teikyo University
import: from AS4713 100 accept ANY
import: from AS2907 100 accept ANY
export: to AS4713 announce AS18091
export: to AS2907 announce AS18091
country: JP
admin-c: HT069JP
tech-c: HT069JP
last-modified: 2005-07-04T22:56:15Z
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remarks: output)
source: JPNIC
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