18121 INCL Ishikawa Computer Center Co.,LTD., JP
Adjacency: 2 Upstream: 2 Downstream: 0
Upstream Adjacent AS list
AS2497 IIJ Internet Initiative Japan Inc., JP
AS4777 APNIC-COLO Asia Pacific Network Information Centre, JP
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 6349 AS18121 ORIGIN Originate: 23296 /17.49 Transit: 0 /0.00 INCL Ishikawa Computer Center Co.,LTD., 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 % 21417 AS18121 INCL Ishikawa Computer Center Co.,LTD., JP 6 1 0 5 1 16.67% Prefix AS Path Aggregation Suggestion 103.241.208.0/23 4777 18121 103.241.208.0/24 4777 18121 - Withdrawn - matching aggregate 103.241.208.0/23 4777 18121 180.94.192.0/20 4777 18121 180.94.208.0/21 4777 18121 202.222.32.0/19 4777 18121 219.121.224.0/19 4777 18121
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS18121 4 More Specifics 6 Total Advertisements INCL Ishikawa Computer Center Co.,LTD., JP
103.241.208.0/23 103.241.208.0/22
103.241.208.0/24 103.241.208.0/22
202.222.32.0/19 202.220.0.0/14
219.121.224.0/19 219.96.0.0/11
whois: 402332
IANA has recorded AS18121 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS18121\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS17653 - AS18431'
as-block: AS17653 - AS18431
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: 2019-01-08T23:19:07Z
source: APNIC
role: APNIC Hostmaster
address: 6 Cordelia Street
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: 2013-10-23T04:06:51Z
source: APNIC
% Information related to 'AS18121 - AS18152'
as-block: AS18121 - AS18152
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.
remarks: 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: 2017-06-12T03:54:32Z
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 'AS18121'
% Abuse contact for 'AS18121' is 'hostmaster@nic.ad.jp'
aut-num: AS18121
as-name: incl
descr: Ishikawa Computer Center Co.,LTD
descr: ha6-1 muryouji kanazawa ishikawa 920-0398 Japan
admin-c: JNIC1-AP
tech-c: JNIC1-AP
remarks: Email address for spam or abuse complaints : abuse@incl.ad.jp
country: JP
mnt-by: MAINT-JPNIC
mnt-lower: MAINT-JPNIC
mnt-irt: IRT-JPNIC-JP
last-modified: 2024-10-03T07:53:52Z
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 'AS18121'
aut-num: AS18121
as-name: INCL
descr: Ishikawa Computer Center Co.,LTD.
import: from AS4725 100 accept ANY
import: from AS7668 100 accept ANY
export: to AS4725 announce ANY
export: to AS7668 announce ANY
country: JP
admin-c: YK2373JP
tech-c: YK2373JP
last-modified: 2005-08-27T02:14:38Z
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 1.88.36-SNAPSHOT (WHOIS-AU5)