Home Prefix Lookup192.157.144.0/20

192.157.144.0/20 - BT British Telecommunications Limited (AS3300)

IPv4ARINallocatedAS3300BT British Telecommunications Limited RPKI Valid

CIDR

192.157.144.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇨🇦 Canada

City

Ottawa (Nepean)

RIR

ARIN

Status

allocated

Allocated

1992-04-17

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
192.157.144.0/20	AS3300 BT British Telecommunications Limited	Valid	ARIN	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
192.157.144.0/20	AS3300	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS3300	ARIN	MNT-INFO	2025-08-01

Origin ASN

AS3300

BT British Telecommunications Limited

Related Prefixes

More prefixes of AS3300

All prefixes of AS3300 →

Geolocation

Country🇨🇦CanadaCA

RegionOntario

CityOttawa (Nepean)

Coordinates45.3259, -75.8348 ↗

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/192.157.144.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/192.157.144.0/20" | jq

External Links

RIPEstat