Home Prefix Lookup165.112.252.0/23

165.112.252.0/23 - National Institutes Of Health (AS30387)

IPv4ARINannouncedAS30387NIH-NET-NCCS - National Institutes of Health RPKI Valid

CIDR

165.112.252.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇺🇸 United States

City

Ashburn

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
165.112.252.0/23	AS30387 NIH-NET-NCCS - National Institutes of Health	Valid	ARIN	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
165.112.0.0/16	AS3527 NIH-NET - National Institutes of Health	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
165.112.252.0/23	AS30387	/27	arin
165.112.0.0/16	AS3527	/25	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS30387	ARIN	MNT-NIH-Z	2026-06-23

Origin ASN

AS30387

NIH-NET-NCCS - National Institutes of Health

Related Prefixes

Covering prefix

165.112.0.0/16AS3527

More prefixes of AS30387

All prefixes of AS30387 →

Geolocation

Country🇺🇸United StatesUS

RegionVirginia

CityAshburn

Coordinates39.0438, -77.4874 ↗

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/165.112.252.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/165.112.252.0/23" | jq

External Links

RIPEstat