Home Prefix Lookup204.52.24.0/21

204.52.24.0/21 - CRUSOE ENERGY SYSTEMS (AS26356)

IPv4ARINannouncedAS26356CRUSOE - CRUSOE ENERGY SYSTEMS LLC RPKI Valid

CIDR

204.52.24.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇺🇸 United States

City

Denver (Cherry Creek)

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
204.52.24.0/21	AS26356 CRUSOE - CRUSOE ENERGY SYSTEMS LLC	Valid	Other IRR	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
204.52.16.0/20	AS26356	/24	arin
204.52.16.0/20	AS399507	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS399507	ARIN	MNT-CES-457	2026-04-07
AS26356	Other IRR	MAINT-AS399507	2023-11-13
AS399507	Other IRR	MAINT-AS399507	2023-11-13

Transfer History

Registry transfers of 204.52.24.0/21, blocks inside it, or blocks containing it.

204.52.16.0/20Transfer · 2022-09-13
Sprint
🇺🇸 US ARIN
→
Crusoe Energy Systems Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2022-09-13	204.52.16.0/20	Sprint 🇺🇸 US ARIN	Crusoe Energy Systems Inc. 🇺🇸 US ARIN	Transfer

Origin ASN

AS26356

CRUSOE - CRUSOE ENERGY SYSTEMS LLC

Related Prefixes

More prefixes of AS26356

All prefixes of AS26356 →

Geolocation

Country🇺🇸United StatesUS

RegionColorado

CityDenver (Cherry Creek)

Coordinates39.7203, -104.9540 ↗

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/204.52.24.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/204.52.24.0/21" | jq

External Links

RIPEstat