Home Prefix Lookup166.73.4.0/23

166.73.4.0/23 - Google (AS396982)

IPv4ARINannouncedAS396982GOOGLE-CLOUD-PLATFORM - Google LLC RPKI Valid

CIDR

166.73.4.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇺🇸 United States

City

Brookfield

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
166.73.4.0/23	AS396982 GOOGLE-CLOUD-PLATFORM - Google LLC	Valid	ARINOther IRR	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
166.73.4.0/23	AS55002	/24	arin
166.73.4.0/23	AS396982	/23	arin
166.73.0.0/16	AS11273	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS55002	ARIN	MNT-FSL-293	2026-07-27
AS396982	ARIN	MNT-FSL-293	2026-07-27
AS55002	Other IRR	MAINT-AS55002	2023-11-13
AS396982	Other IRR	MAINT-AS15169	2023-11-13

Transfer History

Registry transfers of 166.73.4.0/23, blocks inside it, or blocks containing it.

166.73.0.0/16M&A · 2020-08-10
Fiserv CIR, LLC
🇺🇸 US ARIN
→
Fiserv Solutions, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2020-08-10	166.73.0.0/16	Fiserv CIR, LLC 🇺🇸 US ARIN	Fiserv Solutions, LLC 🇺🇸 US ARIN	M&A

Origin ASN

AS396982

GOOGLE-CLOUD-PLATFORM - Google LLC

Related Prefixes

More prefixes of AS396982

All prefixes of AS396982 →

Geolocation

Country🇺🇸United StatesUS

RegionWisconsin

CityBrookfield

Coordinates43.0338, -88.1409 ↗

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/166.73.4.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/166.73.4.0/23" | jq

External Links

RIPEstat