This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402603
IANA has recorded AS45436 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS45436\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS45056 - AS46079'
as-block: AS45056 - AS46079
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: 2009-09-29T05:48:11Z
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 'AS45436'
% Abuse contact for 'AS45436' is 'abuse@grnt.ne.jp'
aut-num: AS45436
as-name: WORKUP-AS-AP
descr: WorkUP Inc.
country: JP
org: ORG-GNCL1-AP
admin-c: NM174-AP
tech-c: NM174-AP
mnt-lower: MAINT-WORKUP-JP
mnt-routes: MAINT-WORKUP-JP
mnt-by: APNIC-HM
mnt-irt: IRT-WORKUP-JP
abuse-c: AW1302-AP
last-modified: 2026-05-28T01:04:36Z
source: APNIC
irt: IRT-WORKUP-JP
address: Hatagaya New Center BLDG.8F 2-7-2 Hatagaya,Shibuya-ku,Tokyo
e-mail: abuse@grnt.ne.jp
abuse-mailbox: abuse@grnt.ne.jp
admin-c: NM174-AP
tech-c: NM174-AP
auth: # Filtered
remarks: abuse@grnt.ne.jp was validated on 2026-04-02
mnt-by: MAINT-WORKUP-JP
last-modified: 2026-05-28T00:50:51Z
source: APNIC
organisation: ORG-GNCL1-AP
org-name: WorkUP Inc.
org-type: LIR
country: JP
address: 2-7-2 Hatagaya
phone: +81-3-3373-2062
fax-no: +81-3-3373-0474
e-mail: apnic@grnt.ne.jp
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2026-05-28T13:05:18Z
source: APNIC
role: ABUSE WORKUPJP
country: ZZ
address: Hatagaya New Center BLDG.8F 2-7-2 Hatagaya,Shibuya-ku,Tokyo
phone: +000000000
e-mail: abuse@grnt.ne.jp
admin-c: NM174-AP
tech-c: NM174-AP
nic-hdl: AW1302-AP
remarks: Generated from irt object IRT-WORKUP-JP
remarks: abuse@grnt.ne.jp was validated on 2026-04-02
abuse-mailbox: abuse@grnt.ne.jp
mnt-by: APNIC-ABUSE
last-modified: 2026-05-28T01:04:29Z
source: APNIC
role: Network Manager
address: 2-7-2 Hatagaya,Shibuya-ku,Tokyo
country: JP
phone: +81-3-3320-2062
e-mail: apnic@grnt.ne.jp
admin-c: NM174-AP
tech-c: NM174-AP
nic-hdl: NM174-AP
notify: apnic@grnt.ne.jp
mnt-by: MAINT-GRNT-JP
last-modified: 2012-03-04T01:32:17Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)