Home Prefix Lookup173.243.160.0/20

173.243.160.0/20 - FirstLight Fiber (AS13536)

IPv4ARINallocatedAS13536TVC-AS1 - FirstLight Fiber, Inc. RPKI Valid

CIDR

173.243.160.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇺🇸 United States

City

Clifton Park

RIR

ARIN

Status

allocated

Allocated

2010-06-03

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
173.243.160.0/20	AS13536 TVC-AS1 - FirstLight Fiber, Inc.	Valid	ARIN	2026-10-11

More-Specific Announcements

1 more-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
173.243.160.0/24	AS13536 TVC-AS1 - FirstLight Fiber, Inc.	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
173.243.160.0/20	AS13536	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS13536	ARIN	MNT-FNL-76	2026-04-22

Transfer History

Registry transfers of 173.243.160.0/20, blocks inside it, or blocks containing it.

173.243.160.0/20M&A · 2026-04-22
FirstLight Fiber, Inc.
🇺🇸 US ARIN
→
FirstLight Networks, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2026-04-22	173.243.160.0/20	FirstLight Fiber, Inc. 🇺🇸 US ARIN	FirstLight Networks, LLC 🇺🇸 US ARIN	M&A

Origin ASN

AS13536

TVC-AS1 - FirstLight Fiber, Inc.

Related Prefixes

More prefixes of AS13536

All prefixes of AS13536 →

Geolocation

Country🇺🇸United StatesUS

RegionNew York

CityClifton Park

Coordinates42.8642, -73.8043 ↗

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/173.243.160.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/173.243.160.0/20" | jq

External Links

RIPEstat