18266 ATNAP Datacore Works Co.,Ltd., JP
Adjacency: 2 Upstream: 1 Downstream: 1
Upstream Adjacent AS list
AS23783 CNA Cable Networks Akita Co.,ltd., JP
Downstream Adjacent AS list
AS59111 AIU-NET Akita International University, JP
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 9212 AS18266 ORIGIN Originate: 12288 /18.42 Transit: 0 /0.00 ATNAP Datacore Works 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 % 34943 AS18266 ATNAP Datacore Works Co.,Ltd., JP 3 0 0 3 0 0.00% Prefix AS Path Aggregation Suggestion 203.179.240.0/20 6939 23783 18266 210.143.112.0/20 6939 23783 18266 219.124.96.0/20 6939 23783 18266
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS18266 3 More Specifics 3 Total Advertisements ATNAP Datacore Works Co.,Ltd., JP
203.179.240.0/20 203.178.0.0/15
210.143.112.0/20 210.136.0.0/13
219.124.96.0/20 219.96.0.0/11
whois: 402590
IANA has recorded AS18266 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS18266\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 'AS18259 - AS18288'
as-block: AS18259 - AS18288
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: 2023-08-03T05:07:53Z
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 'AS18266'
% Abuse contact for 'AS18266' is 'hostmaster@nic.ad.jp'
aut-num: AS18266
as-name: CNA
descr: Cable Networks Akita Co.,Ltd.
descr: 1-59 Yabasedojyounuma-machi Akita-city
descr: Akita-Pref, 010-0964, Japan
admin-c: JNIC1-AP
tech-c: JNIC1-AP
remarks: Email address for spam or abuse complaints : abuse@cna.ne.jp
country: JP
mnt-by: MAINT-JPNIC
mnt-lower: MAINT-JPNIC
mnt-irt: IRT-JPNIC-JP
last-modified: 2024-09-18T04:06:19Z
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 'AS18266'
aut-num: AS18266
as-name: ATNAP
descr: Cable Networks Akita Co.,ltd.
import:
export:
country: JP
admin-c: JP00129211
tech-c: JP00129211
last-modified: 2026-01-28T06:50:02Z
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-AU5)