Home Prefix Lookup204.28.104.0/21

204.28.104.0/21 - Crown Castle Fiber (AS33132)

IPv4ARINallocatedAS33132CROWNCASTLE-AS33132 - Crown Castle Fiber LLCNo ROA

CIDR

204.28.104.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇺🇸 United States

City

Maitland

RIR

ARIN

Status

allocated

Allocated

2014-07-08

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
204.28.104.0/21	AS33132 CROWNCASTLE-AS33132 - Crown Castle Fiber LLC	No ROA	-	2026-10-11

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS46337	Other IRR	MAINT-AS3257	2023-11-13
AS25973	Other IRR	MAINT-AS3257	2023-11-13
AS46887	Other IRR	MAINT-AS27506	2025-09-03

Transfer History

Registry transfers of 204.28.104.0/21, blocks inside it, or blocks containing it.

204.28.104.0/21M&A · 2026-06-01
Crown Castle Fiber LLC
🇺🇸 US ARIN
→
Zayo Bandwidth
🇺🇸 US ARIN
204.28.104.0/21M&A · 2024-03-04
Fibernet Direct
🇺🇸 US ARIN
→
Crown Castle Fiber LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2026-06-01	204.28.104.0/21	Crown Castle Fiber LLC 🇺🇸 US ARIN	Zayo Bandwidth 🇺🇸 US ARIN	M&A
2024-03-04	204.28.104.0/21	Fibernet Direct 🇺🇸 US ARIN	Crown Castle Fiber LLC 🇺🇸 US ARIN	M&A

Origin ASN

AS33132

CROWNCASTLE-AS33132 - Crown Castle Fiber LLC

Related Prefixes

More prefixes of AS33132

All prefixes of AS33132 →

Geolocation

Country🇺🇸United StatesUS

RegionFlorida

CityMaitland

Coordinates28.6323, -81.3968 ↗

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/204.28.104.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/204.28.104.0/21" | jq

External Links

RIPEstat