Home Prefix Lookup51.194.36.0/23

51.194.36.0/23 - BT UK British Telecommunications Limited (AS2856)

IPv4RIPEassignedAS2856BT-UK-AS British Telecommunications Limited RPKI Valid

CIDR

51.194.36.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇬🇧 United Kingdom

City

London

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
51.194.36.0/23	AS2856 BT-UK-AS British Telecommunications Limited	Valid	Other IRRRIPE	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
51.194.36.0/23	AS2856	/24	ripe

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS2856	Other IRR	MAINT-AS834	2026-04-10
AS2856	RIPE	netutils-mnt	2026-04-10

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 transfer marketTransfers published by all five RIRs

API

Open

GEThttps://api.ipctl.io/v1/prefix/51.194.36.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/51.194.36.0/23" | jq

External Links

RIPEstat