AS43428 Yahoo-UK Limited 🇬🇧 GB

Announcing 4 prefixes, seen at the RIS collectors.

IPv4 prefixes

768 (3 × /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: AS43428
Name: Yahoo-UK Limited
Organisation: Yahoo-UK Limited
Country: 🇬🇧 GB
RIR: RIPENCC
Allocated: 2007-07-30

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.ripe.net

as-block:       AS43075 - AS44168
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE

aut-num:        AS43428
as-name:        YAHOO-ULS
remarks:        UKL Streaming
org:            ORG-YE1-RIPE
import:         from AS3356 accept any
export:         to AS3356 announce AS43428
import:         from AS10310 accept any
export:         to AS10310 announce AS43428
admin-c:        YEU-RIPE
tech-c:         YEU-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         YAHOO-MNT
created:        2007-07-30T13:30:20Z
last-modified:  2018-09-04T10:25:54Z
source:         RIPE

organisation:   ORG-YE1-RIPE
org-name:       Yahoo-UK Limited
country:        GB
reg-nr:         03462696
org-type:       LIR
address:        North Wall Quay 5-7 Point Village
address:        D01
address:        Dublin
address:        IRELAND
phone:          +442071311495
fax-no:         +14083497102
tech-c:         LV3435-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        YAHOO-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         YAHOO-MNT
admin-c:        NA1231-RIPE
admin-c:        IG1154-RIPE
admin-c:        LV3435-RIPE
abuse-c:        NA4112-RIPE
created:        2004-04-17T12:24:22Z
last-modified:  2026-05-15T19:36:05Z
source:         RIPE # Filtered

role:           Yahoo Europe Operations Department
address:        Yahoo Europe Operations
address:        125 Shaftesbury Avenue
address:        London
address:        WC2H 8AD
remarks:        trouble: uk-abuse@cc.yahoo-inc.com
admin-c:        NA1231-RIPE
admin-c:        LV3435-RIPE
tech-c:         NA1231-RIPE
tech-c:         IG1154-RIPE
tech-c:         LV3435-RIPE
nic-hdl:        YEU-RIPE
mnt-by:         YAHOO-MNT
created:        2005-02-21T10:54:13Z
last-modified:  2026-05-15T19:34:28Z
source:         RIPE # Filtered
abuse-mailbox:  rir-abuse@verizonmedia.com