Home Prefix Lookup37.44.231.0/24

37.44.231.0/24 - BT UK British Telecommunications Limited (AS2856)

IPv4RIPEassignedAS2856BT-UK-AS British Telecommunications Limited RPKI Valid

CIDR

37.44.231.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇬🇧 United Kingdom

RIR

RIPE

Status

assigned

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
37.44.231.0/24	AS2856 BT-UK-AS British Telecommunications Limited	Valid	Other IRR	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
37.44.231.0/24	AS2856	/24	ripe
37.44.228.0/22	AS834	/24	ripe

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS2856	Other IRR	MAINT-AS834	2025-08-22

Transfer History

Registry transfers of 37.44.231.0/24, blocks inside it, or blocks containing it.

37.44.228.0/22Transfer · 2020-11-23
Semih Mehmet CAN
RIPE NCC
→
Netwise Hosting Ltd
RIPE NCC

Date	Resource	From	To	Type
2020-11-23	37.44.228.0/22	Semih Mehmet CAN RIPE NCC	Netwise Hosting Ltd RIPE NCC	Transfer

Origin ASN

AS2856

BT-UK-AS British Telecommunications Limited

Related Prefixes

More prefixes of AS2856

All prefixes of AS2856 →

Geolocation

Country🇬🇧United KingdomGB

Coordinates55.3781, -3.4360 ↗

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 transfer marketTransfers published by all five RIRs

API

Open

GEThttps://api.ipctl.io/v1/prefix/37.44.231.0/24

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

curl -s "https://api.ipctl.io/v1/prefix/37.44.231.0/24" | jq

External Links

RIPEstat