Autonomous system
AS46887 CROWNCASTLE-AS46887
Unclassified ARIN
Summary
Zayo Bandwidth
fiber wholesale enterprise transit
CROWNCASTLE-AS46887 is held by Zayo Bandwidth.
What it's used for
- The address space carries wholesale fiber infrastructure, evidenced by netnames such as
ZAYO-CCF-9-191-0-0andZAYO-CCF-131-239-0-0associated with Zayo Bandwidth. - With 812,800 IPv4 addresses announced across 606 prefixes and 974 observed neighbours, the high neighbour count relative to the address inventory indicates a transit or wholesale provider role rather than an access network.
- Traffic from this AS consists of enterprise fiber backhaul, dedicated circuits, and wholesale connectivity services provided by Zayo.
Notable
- Registrants include Zayo Bandwidth, Delaware Technical Community College, Bank Street College, Pan American Health Organization, and Arlington County Government, reflecting a mix of wholesale fiber space and leased or historical allocations.
- Crown Castle Fiber LLC was acquired by Zayo Group, which continues to operate the fiber solutions business under the Zayo brand.
- The inventory includes large /16 blocks such as 9.191.0.0/16 and 138.123.0.0/16, alongside numerous smaller subdivisions.
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
Recorded at 9 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.237.148 |
| Equinix Internet Exchange Chicago | Chicago, United States | 2001:504:0:4:0:4:6887:1 |
| Equinix Internet Exchange Dallas | Dallas, United States | 206.223.119.191 |
| Equinix Internet Exchange Miami | Miami, United States | 198.32.242.120 |
| Equinix Internet Exchange New York | New York, United States | 198.32.118.29 |
| Boston Internet Exchange | Boston, United States | 206.108.236.9 |
| Equinix Internet Exchange Los Angeles | Los Angeles, United States | 206.223.123.117 |
| Equinix Los Angeles IBX | Los Angeles, United States | 206.223.123.117 |
Transit providers
1 upstream, 964 downstream and 961 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS6461 | Zayo Bandwidth | 55,304 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 607 prefixes · 813K addresses IPv6 283 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 890 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS46887- Registry name
- ZAYO-CCF-AS46887
- Registrant
- Zayo Bandwidth
- Abuse contact
- abuse@zayo.com
- Registered
- 2009-04-13
- Last changed
- 2026-06-01
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0.5% valid · 5 valid, 1,049 with no ROA
- ROAs
- 18 authorising AS46887
- ASPA
- no ASPA record
- IRR
- 98% registered · 1,030 of 1,054 announcements 19 other origin
- Route objects
- 2,166 naming AS46887
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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