Autonomous system
AS27506 CROWNCASTLE-AS27506 - Crown Castle Fiber LLC
Unclassified ARIN
Summary
Zayo Bandwidth
fiber business transit infrastructure
CROWNCASTLE-AS27506 is held by Crown Castle Fiber LLC, which operates as Zayo Bandwidth.
What it's used for
- The address space carries fiber infrastructure, evidenced by reverse DNS entries such as
64.20.181.254.nyc.electricfiber.netand69.64.217.255.nyc.electricfiber.net. - With 5120 IPv4 addresses announced across 6 prefixes and only 2 observed neighbours, the ratio suggests a focused infrastructure or transit role rather than a broad access network.
Notable
- Registrants for the majority of prefixes are listed as Zayo Bandwidth, aligning with the operator's identity, while one prefix (
64.20.175.0/24) is registered to FIDESSA CORPORATION. - The address inventory is concentrated in the 64.20.0.0/16 and 69.64.0.0/16 ranges, with netnames like
ZAYO-CCF-64-20-160-0indicating specific fiber segments.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 1 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS46887 | Crown Castle Fiber LLC | 997 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-08, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 5.12K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27506- Registry name
- ZAYO-CCF-AS27506
- Registrant
- Zayo Bandwidth
- Abuse contact
- abuse@zayo.com
- Registered
- 2003-03-19
- Last changed
- 2026-06-01
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 17 with no ROA
- ROAs
- 0 authorising AS27506
- ASPA
- no ASPA record
- IRR
- 53% registered · 9 of 17 announcements 8 other origin
- Route objects
- 19 naming AS27506
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 455 networks and 1,854 prefixes, as published 2026-11-09. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere