AS45501 Yahoo Corp Network 🇸🇬 SG

Yahoo IS-NET. Announcing 4 prefixes, seen at the RIS collectors.

IPv4 prefixes

512 (2 × /24)

IPv6 prefixes

2 × /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: AS45501
Name: Yahoo Corp Network
Organisation: Yahoo IS-NET
Country: 🇸🇬 SG
RIR: APNIC
Allocated: 2008-10-29

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 4 no ROA (100.0%)

Whois

Fetched from whois.apnic.net

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:        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:        AS45501
as-name:        YAHOO-CORP-SG-AS-AP
descr:          Yahoo Corp Network
descr:          Singapore
country:        SG
import:         from AS10310 action pref=200; accept ANY
import:         from AS18293 action pref=100; accept ANY
export:         to AS10310 announce AS45501
export:         to AS18293 announce AS45501
org:            ORG-YI2-AP
admin-c:        KT273-AP
tech-c:         KT273-AP
abuse-c:        AY531-AP
notify:         kwtso@yahoo-inc.com
mnt-lower:      MAINT-YAHOOISNET-HK
mnt-routes:     MAINT-YAHOOISNET-HK
mnt-by:         APNIC-HM
mnt-irt:        IRT-YAHOOISNET-HK
last-modified:  2021-01-15T01:47:10Z
source:         APNIC

irt:            IRT-YAHOOISNET-HK
address:        701 First Avenue
address:        Sunnyvale
e-mail:         rir-admin@yahooinc.com
abuse-mailbox:  rir-abuse@yahooinc.com
admin-c:        BC365-AP
tech-c:         KT273-AP
auth:           # Filtered
remarks:        rir-admin@yahooinc.com was validated on 2026-04-03
remarks:        rir-abuse@yahooinc.com was validated on 2026-04-03
mnt-by:         MAINT-YAHOOISNET-HK
last-modified:  2026-05-28T08:45:45Z
source:         APNIC

organisation:   ORG-YI2-AP
org-name:       Yahoo IS-NET
org-type:       LIR
country:        HK
address:        Suite 2707-13, 27F,
address:        Devon House Taikoo Place,
address:        979 King's Rd,
address:        Quarry Bay
phone:          +852---21206875
e-mail:         rir-admin@yahooinc.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-06-10T12:57:44Z
source:         APNIC

role:           ABUSE YAHOOISNETHK
country:        ZZ
address:        701 First Avenue
address:        Sunnyvale
phone:          +000000000
e-mail:         rir-admin@yahooinc.com
admin-c:        BC365-AP
tech-c:         KT273-AP
nic-hdl:        AY531-AP
remarks:        Generated from irt object IRT-YAHOOISNET-HK
remarks:        rir-admin@yahooinc.com was validated on 2026-04-03
remarks:        rir-abuse@yahooinc.com was validated on 2026-04-03
abuse-mailbox:  rir-abuse@yahooinc.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-03T21:28:30Z
source:         APNIC

person:         Ka Wing Tso
nic-hdl:        KT273-AP
e-mail:         kwtso@yahoo-inc.com
address:        27/F, Sunning Plaza,
address:        10 Hysan Avenue,
address:        Causeway Bay, Hong Kong
phone:          +852-28376275
fax-no:         +852-25041423
country:        HK
mnt-by:         MAINT-NEW
last-modified:  2008-09-04T07:49:45Z
source:         APNIC