AS46887 — CROWNCASTLE-AS46887 - Crown Castle Fiber LLC

AS46887 announces 474 IPv4 prefixes covering 813,312 addresses and 73 IPv6 prefixes.

About this network

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-9-191-0-0 and ZAYO-CCF-131-239-0-0 associated 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.

Announced prefixes

• 8.11.166.0/24
• 8.28.48.0/21
• 8.29.209.0/24
• 8.29.210.0/23
• 8.29.212.0/24
• 8.29.214.0/23
• 8.41.200.0/24
• 8.225.193.0/24
• 9.179.0.0/17
• 9.179.128.0/18
• 9.179.192.0/19
• 9.179.224.0/22
• 9.179.228.0/24
• 9.179.231.0/24
• 9.179.233.0/24
• 9.179.234.0/24
• 9.179.236.0/22
• 9.179.240.0/20
• 9.191.0.0/16
• 23.161.184.0/24
• 38.134.184.0/24
• 64.20.160.0/21
• 64.20.169.0/24
• 64.20.170.0/23
• 64.20.172.0/23
• 64.20.174.0/24
• 64.20.188.0/22
• 64.72.64.0/22
• 64.72.68.0/23
• 64.72.71.0/24
• 64.72.72.0/22
• 64.72.76.0/23
• 64.72.78.0/24
• 64.72.81.0/24
• 64.72.84.0/22
• 64.72.88.0/22
• 64.72.92.0/23
• 64.72.95.0/24
• 64.112.182.0/23
• 64.189.34.0/24
• 64.195.215.0/24
• 64.238.128.0/22
• 64.238.132.0/23
• 64.238.135.0/24
• 64.238.136.0/21
• 65.254.0.0/20
• 65.254.16.0/22
• 65.254.23.0/24
• 65.254.24.0/23
• 65.254.28.0/22
• 66.37.32.0/22
• 66.37.36.0/24
• 66.37.38.0/23
• 66.37.40.0/22
• 66.37.44.0/23
• 66.206.112.0/21
• 66.206.120.0/24
• 66.206.122.0/24
• 66.206.126.0/23
• 67.97.247.0/24
• 67.208.160.0/22
• 67.208.165.0/24
• 67.208.166.0/24
• 67.208.168.0/21
• 67.208.176.0/20
• 68.171.192.0/21
• 68.171.200.0/23
• 68.171.204.0/22
• 69.46.224.0/22
• 69.46.228.0/23
• 69.46.230.0/24
• 69.46.232.0/24
• 69.46.234.0/23
• 69.64.192.0/22
• 69.64.196.0/23
• 69.64.198.0/24
• 69.64.200.0/22
• 69.64.206.0/23
• 69.64.208.0/21
• 69.64.220.0/23
• 69.64.222.0/24
• 69.195.32.0/23
• 69.195.34.0/24
• 69.195.37.0/24
• 69.195.38.0/23
• 69.195.41.0/24
• 69.195.44.0/22
• 72.22.160.0/22
• 72.22.164.0/23
• 72.22.167.0/24
• 72.22.168.0/22
• 72.22.173.0/24
• 72.22.174.0/23
• 72.22.176.0/20
• 74.113.48.0/21
• 74.115.238.0/23
• 74.118.24.0/23
• 76.8.64.0/20
• 76.8.80.0/22
• 76.8.84.0/23

and 447 more.

Upstream networks

• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC

Downstream networks

• AS36352 HostPapa
• AS23410 Nassau County BOCES
• AS33132 Crown Castle Fiber LLC
• AS32531 Fordham University
• AS397115 Electric Boat Corporation
• AS20442 Yale-New Haven Health Services Corporation
• AS21704 New York City Board of Education
• AS395748 NetSpeed LLC
• AS27506 Crown Castle Fiber LLC
• AS4906 Frontline Communications
• AS27609 USC-University Hospital
• AS11790 Random House, Inc.
• AS11516 Eastern Suffolk BOCES
• AS6620 AMA Communications, LLC
• AS54253 Oracle Corporation
• AS3360 DXC US Latin America Corporation
• AS40021 Contabo Inc.
• AS22644 Thomas Jefferson University Hospitals, Inc.
• AS11042 NETWORK TRANSIT HOLDINGS LLC
• AS26793 ICS Advanced Technologies
• AS31942 HyperFiber
• AS21 The RAND Corporation
• AS26381 HSBC Technology & Services (USA) Inc
• AS398875 The City of New York
• AS33545 Bard College

Adjacent networks

• AS6461 Zayo Bandwidth
• AS36352 HostPapa
• AS33132 Crown Castle Fiber LLC
• AS23410 Nassau County BOCES
• AS32531 Fordham University
• AS397115 Electric Boat Corporation
• AS20442 Yale-New Haven Health Services Corporation
• AS21704 New York City Board of Education
• AS395748 NetSpeed LLC
• AS27506 Crown Castle Fiber LLC
• AS3360 DXC US Latin America Corporation
• AS4906 Frontline Communications
• AS27609 USC-University Hospital
• AS11790 Random House, Inc.
• AS11516 Eastern Suffolk BOCES
• AS11042 NETWORK TRANSIT HOLDINGS LLC
• AS6620 AMA Communications, LLC
• AS54253 Oracle Corporation
• AS40021 Contabo Inc.
• AS6254 EG&G, Inc.
• AS22644 Thomas Jefferson University Hospitals, Inc.
• AS395652 County of Bergen
• AS26793 ICS Advanced Technologies
• AS31942 HyperFiber
• AS21 The RAND Corporation

Routing security

• RPKI: 5 valid, 1 invalid and 1,057 not-found announcements; 18 ROAs.
• ASPA: none published.
• IRR: 82% of announcements registered; 2,164 route objects.
• Listed in as-sets: AS-14230-UPSTREAM, AS-36193, AS-CCF, AS-CCF-TEST, AS-COX-NORTHEAST, AS-H5-PIT1-TRANSIT, AS-H5DATA-AS-SETCIN02, AS-H5DATA-AS-SETPITT01, AS-LIGHT-141, AS-MFNX, AS-MPA-1, AS-PNAPBSN, AS-RBS, AS-RR-BIZ, AS-SHOLES, AS-TA-OPERATING-01, AS-UDOS, AS-WINDSTREAM-CUST, AS16657:AS-CUST, AS27353:AS-TRANSIT, AS393731:AS-PEERS, AS399568:AS-WILMINGTON-PEERS, AS46887:AS-CONE.

Internet exchanges

• Equinix Internet Exchange Ashburn — Ashburn, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• Equinix Internet Exchange Dallas — Dallas, United States
• Equinix Internet Exchange Miami — Miami, United States
• Equinix Internet Exchange New York — New York, United States
• Boston Internet Exchange — Boston, United States
• Equinix Internet Exchange Los Angeles — Los Angeles, United States
• Equinix Los Angeles IBX — Los Angeles, United States
• Equinix-LA(former Paix) — Los Angeles, United States