Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS27506

Announcement observedARIN

CROWNCASTLE-AS27506 - Crown Castle Fiber LLC · ZAYO-CCF-AS27506

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/1/2026, 23:21:58Snapshot expired

View network topology RDAP registration

ASN: AS27506
Registration country: United States
Name: CROWNCASTLE-AS27506 - Crown Castle Fiber LLC
Abbreviation: ZAYO-CCF-AS27506
Registration date: 3/19/2003, 23:02:30
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
209.148.32.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
209.148.32.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
209.148.48.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.160.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.160.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.168.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.175.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.176.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.177.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.178.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.179.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.180.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.186.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
64.20.187.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
69.64.192.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
69.64.192.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid
76.8.64.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/21/2026, 00:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: CROWNCASTLE-AS27506 - Crown Castle Fiber LLC
RIR: ARIN
Registration country: United States
Registration date: 3/19/2003, 23:02:30
Abuse contact: abuse@zayo.com

Snapshot trend

10/1/2026, 23:21:5817 v40 v61 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn · iana-rdap-asn-bootstrap