ASN Lookup Tool

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Reference: WHOIS servers of RIRs
  APNIC WHOIS(whois.apnic.net)
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  AfriNIC WHOIS(whois.afrinic.net)

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS133120 - AS133631'

as-block:       AS133120 - AS133631
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:  2013-09-11T23:52:15Z
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 'AS133405'

% Abuse contact for 'AS133405' is 'abuse@retn.net'

aut-num:        AS133405
as-name:        RETNKK-AS-AP
descr:          RETN Co., Ltd.
country:        JP
org:            ORG-RKK1-AP
admin-c:        RKKA1-AP
tech-c:         RKKA1-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-RETNKK-JP
mnt-routes:     MAINT-RETNKK-JP
mnt-lower:      MAINT-RETNKK-JP
abuse-c:        AR1534-AP
last-modified:  2026-04-14T09:15:43Z
source:         APNIC

irt:            IRT-RETNKK-JP
address:        6-2-31-1917 Toyosu, Koto-ku, Tokyo, 135-0061, Japan, Tokyo Koto-ku 135-0061
e-mail:         peering@retn.net
abuse-mailbox:  abuse@retn.net
admin-c:        RKKA1-AP
tech-c:         RKKA1-AP
auth:           # Filtered
remarks:        abuse@retn.net was validated on 2026-08-18
mnt-by:         MAINT-RETNKK-JP
last-modified:  2026-09-07T13:13:40Z
source:         APNIC

organisation:   ORG-RKK1-AP
org-name:       RETN Co., Ltd.
org-type:       LIR
country:        JP
address:        6-2-31-1917 Toyosu
address:        Koto-ku, Tokyo, 135-0061, Japan
phone:          +85238454700
e-mail:         peering@retn.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2026-03-13T13:24:44Z
source:         APNIC

role:           ABUSE RETNKKJP
country:        ZZ
address:        6-2-31-1917 Toyosu, Koto-ku, Tokyo, 135-0061, Japan, Tokyo Koto-ku 135-0061
phone:          +000000000
e-mail:         peering@retn.net
admin-c:        RKKA1-AP
tech-c:         RKKA1-AP
nic-hdl:        AR1534-AP
remarks:        Generated from irt object IRT-RETNKK-JP
remarks:        abuse@retn.net was validated on 2026-08-18
abuse-mailbox:  abuse@retn.net
mnt-by:         APNIC-ABUSE
last-modified:  2026-08-18T23:17:32Z
source:         APNIC

role:           RETN K K administrator
address:        6-2-31-1917 Toyosu, Koto-ku, Tokyo, 135-0061, Japan, Tokyo Koto-ku 135-0061
country:        JP
phone:          +85238454700
e-mail:         peering@retn.net
admin-c:        RKKA1-AP
tech-c:         RKKA1-AP
nic-hdl:        RKKA1-AP
mnt-by:         MAINT-RETNKK-JP
last-modified:  2026-04-13T01:47:49Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-US2)