ResearchRouting table, RPKI, IRR & looking glass

AS10880 Yahoo Holdings Inc.

AS10880 (YAHOO-AN2) is registered to Yahoo Holdings Inc. in US, through ARIN. It originates 12 prefixes in the global routing table.

6
IPv4 prefixes
6
IPv6 prefixes
1,536
IPv4 addresses
0%
RPKI valid

Who holds AS10880

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS10880
Handle
YAHOO-AN2
Organization
Yahoo Holdings Inc.
Country
US
Registry
ARIN
ASPA
None published
WHOIS recordARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       10880
ASName:         YAHOO-AN2
ASHandle:       AS10880
RegDate:        2006-05-05
Updated:        2019-05-01
Ref:            https://rdap.arin.net/registry/autnum/10880


OrgName:        Yahoo Holdings Inc.
OrgId:          OH-207
Address:        770 BROADWAY FL 9
City:           New York
StateProv:      NY
PostalCode:     10003-9558
Country:        US
RegDate:        2018-12-21
Updated:        2025-09-03
Ref:            https://rdap.arin.net/registry/entity/OH-207


OrgAbuseHandle: OATHA-ARIN
OrgAbuseName:   Oath Abuse
OrgAbusePhone:  +1-408-349-3300 
OrgAbuseEmail:  rir-abuse@yahoo-inc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/OATHA-ARIN

OrgTechHandle: OTC2-ARIN
OrgTechName:   Oath Tech Contact
OrgTechPhone:  +1-408-349-5555 
OrgTechEmail:  rir-tech@yahooinc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/OTC2-ARIN

OrgNOCHandle: OATHN-ARIN
OrgNOCName:   Oath NOC
OrgNOCPhone:  +1-408-349-5555 
OrgNOCEmail:  rir-noc@yahooinc.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/OATHN-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

What AS10880 announces

Prefixes originated by AS10880 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
6
IPv6 prefixes
6
IPv4 addresses
1,536 (6 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
12
ROAs naming AS10880
0
With an IRR route object
11 91%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

Who AS10880 is reached through

The AS just before AS10880 in the paths our looking glass collectors hold, for 12 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.