Home Prefix Lookup198.51.44.0/23

198.51.44.0/23 - BGP Prefix

IPv4ARINallocated RPKI Valid

CIDR

198.51.44.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇺🇸 United States

City

New York

RIR

ARIN

Status

allocated

Allocated

2013-08-07

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below.

More-Specific Announcements

2 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
198.51.44.0/24	AS62597 NSONE - NSONE Inc	Valid	-	2026-10-12
198.51.45.0/24	AS62597 NSONE - NSONE Inc	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
198.51.44.0/23	AS62597	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS62597	ARIN	MNT-IBM-1	2026-05-13

Transfer History

Registry transfers of 198.51.44.0/23, blocks inside it, or blocks containing it.

198.51.44.0/23M&A · 2026-05-11
NSONE Inc
🇺🇸 US ARIN
→
IBM
🇺🇸 US ARIN

Date	Resource	From	To	Type
2026-05-11	198.51.44.0/23	NSONE Inc 🇺🇸 US ARIN	IBM 🇺🇸 US ARIN	M&A

Geolocation

Country🇺🇸United StatesUS

RegionNew York

CityNew York

Coordinates40.7128, -74.0060 ↗

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/198.51.44.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/198.51.44.0/23" | jq

External Links

RIPEstat