Home Prefix Lookup72.9.180.0/22

72.9.180.0/22 - BT UK British Telecommunications Limited (AS2856)

IPv4ARINannouncedAS2856BT-UK-AS British Telecommunications Limited RPKI Valid

CIDR

72.9.180.0/22

IP Version

IPv4

Addresses

Mask

/22 (255.255.252.0)

Country

🇬🇧 United Kingdom

City

London

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
72.9.180.0/22	AS2856 BT-UK-AS British Telecommunications Limited	Valid	ARIN	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
72.9.180.0/22	AS2856	/22	arin
72.9.180.0/22	AS2914	/22	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS2914	ARIN	MNT-TACE	2025-05-29
AS2856	ARIN	MNT-TACE	2025-07-15

Transfer History

Registry transfers of 72.9.180.0/22, blocks inside it, or blocks containing it.

72.9.160.0/19M&A · 2016-03-18
TELUS MOBILITY
🇨🇦 CA ARIN
→
TELUS Communications Inc.
🇨🇦 CA ARIN

Date	Resource	From	To	Type
2016-03-18	72.9.160.0/19	TELUS MOBILITY 🇨🇦 CA ARIN	TELUS Communications Inc. 🇨🇦 CA ARIN	M&A

Origin ASN

AS2856

BT-UK-AS British Telecommunications Limited

Related Prefixes

More prefixes of AS2856

All prefixes of AS2856 →

Geolocation

Country🇬🇧United KingdomGB

RegionEngland

CityLondon

Coordinates51.5072, -0.1276 ↗

Abuse Contact

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 ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/72.9.180.0/22

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

curl -s "https://api.ipctl.io/v1/prefix/72.9.180.0/22" | jq

External Links

RIPEstat