AS139903 RETN Taiwan 🇹🇼 TW

RETN Telecoms Ltd.. Announcing 2 prefixes, seen at the RIS collectors.

IPv4 prefixes

512 (2 × /24)

IPv6 prefixes

1 × /48

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS139903
Name: RETN Taiwan
Organisation: RETN Telecoms Ltd.
Country: 🇹🇼 TW
RIR: APNIC
Allocated: 2019-12-23

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

2 valid (100.0%) 0 invalid (0.0%) 0 no ROA (0.0%)

Whois

Fetched from whois.apnic.net

as-block:       AS139578 - AS140601
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:  2019-06-13T01:03:23Z
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

aut-num:        AS139903
as-name:        RETN-AS-AP
descr:          RETN Telecoms Ltd.
country:        TW
org:            ORG-RTL4-AP
admin-c:        RTLA4-AP
tech-c:         RTLA4-AP
abuse-c:        AR887-AP
mnt-lower:      MAINT-RETN-TW
mnt-routes:     MAINT-RETN-TW
mnt-by:         APNIC-HM
mnt-irt:        IRT-RETN-TW
last-modified:  2025-08-26T16:48:03Z
notify:         mntrdb@retn.net
source:         APNIC

irt:            IRT-RETN-TW
address:        7F.-3, No.103, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, Taipei
e-mail:         abuse@retn.net
abuse-mailbox:  abuse@retn.net
admin-c:        RTLA4-AP
tech-c:         RTLA4-AP
auth:           # Filtered
remarks:        abuse@retn.net was validated on 2026-08-18
mnt-by:         MAINT-RETN-TW
last-modified:  2026-09-07T13:11:59Z
source:         APNIC

organisation:   ORG-RTL4-AP
org-name:       RETN Telecoms Ltd.
org-type:       LIR
country:        TW
address:        9F-5, No. 70 Yanping S. Road
address:        Zhongzheng District
phone:          +886-2-2511-0013
e-mail:         noc@retn.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:59Z
source:         APNIC

role:           ABUSE RETNTW
country:        ZZ
address:        7F.-3, No.103, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, Taipei
phone:          +000000000
e-mail:         abuse@retn.net
admin-c:        RTLA4-AP
tech-c:         RTLA4-AP
nic-hdl:        AR887-AP
remarks:        Generated from irt object IRT-RETN-TW
remarks:        abuse@retn.net was validated on 2026-08-18
abuse-mailbox:  abuse@retn.net
mnt-by:         APNIC-ABUSE
last-modified:  2026-08-18T23:17:07Z
source:         APNIC

role:           RETN Telecoms Ltd administrator
address:        7F.-3, No.103, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, Taipei
country:        TW
phone:          +886 2 2511 0013
fax-no:         +886 2 2511 0013
e-mail:         abuse@retn.net
admin-c:        RTLA4-AP
tech-c:         RTLA4-AP
nic-hdl:        RTLA4-AP
mnt-by:         MAINT-RETN-TW
last-modified:  2019-12-23T00:33:24Z
source:         APNIC