Home Prefix Lookup2a03:cd00::/32

2a03:cd00::/32 - Yahoo Holdings (AS10310)

IPv6RIPE NCCallocatedAS10310YAHOO-1 - Yahoo Holdings Inc.No ROA

CIDR

2a03:cd00::/32

IP Version

IPv6

Addresses

79228.1Y

Mask

/32

Country

🇺🇸 United States

City

Sterling

RIR

RIPE NCC

Status

allocated

Allocated

2011-04-18

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
2a03:cd00::/32	AS10310 YAHOO-1 - Yahoo Holdings Inc.	No ROA	Other IRR	2026-10-12

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS1668	Other IRR	MAINT-YAHOO	2023-11-13
AS10310	Other IRR	MAINT-YAHOO	2023-11-13

Transfer History

Registry transfers of 2a03:cd00::/32, blocks inside it, or blocks containing it.

2a03:cd00::/32Transfer · 2025-12-15
Historic AOL LLC
🇺🇸 US RIPE NCC
→
Yahoo Inc.
🇺🇸 US RIPE NCC

Date	Resource	From	To	Type
2025-12-15	2a03:cd00::/32	Historic AOL LLC 🇺🇸 US RIPE NCC	Yahoo Inc. 🇺🇸 US RIPE NCC	Transfer

Origin ASN

AS10310

YAHOO-1 - Yahoo Holdings Inc.

Related Prefixes

More prefixes of AS10310

All prefixes of AS10310 →

Geolocation

Country🇺🇸United StatesUS

RegionVirginia

CitySterling

Coordinates39.0054, -77.4457 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the RIPE NCC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/2a03:cd00::/32

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/2a03:cd00::/32" | jq

External Links

RIPEstat