Home Prefix Lookup66.203.76.0/24

66.203.76.0/24 - TierPoint (AS17378)

IPv4ARINannouncedAS17378AS17378 - TierPoint, LLC RPKI Valid

CIDR

66.203.76.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇺🇸 United States

City

Southborough

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
66.203.76.0/24	AS17378 AS17378 - TierPoint, LLC	Valid	Other IRR	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
66.203.64.0/19	AS17378 AS17378 - TierPoint, LLC	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
66.203.64.0/19	AS7181	/24	arin
66.203.64.0/19	AS17378	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS17378	Other IRR	MAINT-AS22773	2025-06-08

Transfer History

Registry transfers of 66.203.76.0/24, blocks inside it, or blocks containing it.

66.203.64.0/19M&A · 2018-05-29
Access Northeast Inc.
🇺🇸 US ARIN
→
TierPoint, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2018-05-29	66.203.64.0/19	Access Northeast Inc. 🇺🇸 US ARIN	TierPoint, LLC 🇺🇸 US ARIN	M&A

Origin ASN

AS17378

AS17378 - TierPoint, LLC

Related Prefixes

Covering prefix

66.203.64.0/19AS17378

More prefixes of AS17378

All prefixes of AS17378 →

Geolocation

Country🇺🇸United StatesUS

RegionMassachusetts

CitySouthborough

Coordinates42.3093, -71.5368 ↗

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/66.203.76.0/24

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

curl -s "https://api.ipctl.io/v1/prefix/66.203.76.0/24" | jq

External Links

RIPEstat