Autonomous System

AS46887

Crown Castle Fiber LLC

Crown Castle Fiber LLC United States 🌐 zayo.com

Announced IPs

822,016

CIDR prefixes

510

ASN

AS46887

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

58/100

Caution

How this score is built

Baseline (neutral) 65
Multiple-origin (MOAS) routing anomaly −12
Isp allocation +5
Trust score 58 / 100

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 8 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS46887 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

Prefix	Origin ASNs	Last detected (UTC)
164.74.125.0/24	AS17025, AS46887	2026-07-18 12:37:44
167.244.247.0/24	AS13536, AS46887	2026-07-18 12:37:44
167.244.213.0/24	AS13536, AS46887	2026-07-18 12:37:44
164.74.123.0/24	AS17025, AS46887	2026-07-18 12:37:44
164.74.122.0/24	AS17025, AS46887	2026-07-18 12:37:44
167.246.54.0/24	AS22808, AS46887	2026-07-18 12:37:44
167.244.244.0/24	AS13536, AS46887	2026-07-18 12:07:44
144.121.73.0/24	AS7029, AS46887	2026-07-17 19:22:38

Network profile

Source: PeeringDB →

Network type NSP

Geographic scope North America

Peering policy Restrictive

IRR record AS-CCF

Present at 7 internet exchanges: Boston Internet Exchange, Equinix Chicago, Equinix New York, Equinix Ashburn, Equinix Dallas, Equinix Miami, Equinix Los Angeles

Website ↗

AS46887 — global IP footprint

Cities where AS46887 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
9.191.0.0/16	65.5K	0.0%	Crown Castle Fiber LLC	US	—	—
138.123.0.0/16	65.5K	1.0%	Crown Castle Fiber LLC	US	Delaware	Newark
149.70.0.0/16	65.5K	0.0%	Crown Castle Fiber LLC	US	New Jersey	Highland Lakes
165.158.0.0/16	65.5K	0.0%	Crown Castle Fiber LLC	US	—	—
9.179.0.0/17	32.8K	0.0%	Crown Castle Fiber LLC	US	Florida	Miami
158.59.128.0/17	32.8K	0.6%	Crown Castle Fiber LLC	US	Virginia	Arlington
9.179.128.0/18	16.4K	0.0%	Crown Castle Fiber LLC	US	—	—
131.239.192.0/18	16.4K	17.9%	Crown Castle Fiber LLC	US	Maryland	Baltimore
9.179.192.0/19	8.2K	0.0%	Crown Castle Fiber LLC	US	—	—
131.239.96.0/19	8.2K	13.9%	Crown Castle Fiber LLC	US	New York	New Hampton
131.239.128.0/19	8.2K	14.8%	Crown Castle Fiber LLC	US	New York	Brooklyn
144.121.224.0/19	8.2K	15.1%	Crown Castle Fiber LLC	US	New York	Queens
151.181.192.0/19	8.2K	0.1%	Crown Castle Fiber LLC	US	New York	Rochester
160.72.32.0/19	8.2K	0.0%	—	US	North Carolina	Charlotte
160.72.64.0/19	8.2K	11.1%	Crown Castle Fiber LLC	US	New York	New York
160.72.128.0/19	8.2K	18.1%	Crown Castle Fiber LLC	US	New York	The Bronx
167.253.160.0/19	8.2K	0.0%	Crown Castle Fiber LLC	US	—	—
209.160.160.0/19	8.2K	24.6%	Crown Castle Fiber LLC	US	Florida	Fort Lauderdale
9.179.240.0/20	4.1K	0.0%	Crown Castle Fiber LLC	US	—	—
64.238.128.0/20	4.1K	94.6%	Crown Castle Fiber LLC	US	Connecticut	Storrs
65.254.0.0/20	4.1K	95.0%	Crown Castle Fiber LLC	US	New York	Bay Shore
67.208.176.0/20	4.1K	34.3%	Crown Castle Fiber LLC	US	Massachusetts	Boston
69.195.48.0/20	4.1K	0.0%	—	US	—	—
72.22.176.0/20	4.1K	28.8%	Crown Castle Fiber LLC	US	Connecticut	Stamford
76.8.64.0/20	4.1K	20.6%	Crown Castle Fiber LLC	US	New York	New York
131.239.64.0/20	4.1K	10.9%	Crown Castle Fiber LLC	US	Connecticut	Wallingford
131.239.176.0/20	4.1K	15.0%	Crown Castle Fiber LLC	US	Ohio	Columbus
136.223.0.0/20	4.1K	0.0%	Crown Castle Fiber LLC	US	—	—
144.121.0.0/20	4.1K	23.6%	Crown Castle Fiber LLC	US	Massachusetts	Boston
144.121.160.0/20	4.1K	15.5%	Crown Castle Fiber LLC	US	Ohio	Cincinnati
144.121.192.0/20	4.1K	13.7%	Crown Castle Fiber LLC	US	New York	Brooklyn
144.121.240.0/20	4.1K	15.7%	Crown Castle Fiber LLC	US	New York	Queens
151.181.64.0/20	4.1K	0.8%	Crown Castle Fiber LLC	US	New York	Rochester
151.181.160.0/20	4.1K	0.4%	Crown Castle Fiber LLC	US	North Carolina	Charlotte
160.72.32.0/20	4.1K	15.9%	Crown Castle Fiber LLC	US	Maryland	Baltimore
160.72.112.0/20	4.1K	15.8%	Crown Castle Fiber LLC	US	New Jersey	River Edge
160.72.176.0/20	4.1K	18.8%	Crown Castle Fiber LLC	US	New York	Holbrook
160.72.240.0/20	4.1K	10.2%	Crown Castle Fiber LLC	US	—	—
169.139.0.0/20	4.1K	0.0%	Crown Castle Fiber LLC	US	Florida	Fort Lauderdale
172.85.32.0/20	4.1K	42.2%	Crown Castle Fiber LLC	US	New Jersey	Irvington
184.75.192.0/20	4.1K	33.9%	Crown Castle Fiber LLC	US	Massachusetts	Grafton
192.235.16.0/20	4.1K	0.2%	Crown Castle Fiber LLC	US	New York	Schenectady
209.160.240.0/20	4.1K	22.7%	Crown Castle Fiber LLC	US	California	Los Angeles
8.28.48.0/21	2.0K	0.2%	Crown Castle Fiber LLC	US	Ohio	Hamilton
9.179.224.0/21	2.0K	0.0%	Crown Castle Fiber LLC	US	—	—
64.20.160.0/21	2.0K	34.0%	Crown Castle Fiber LLC	US	New York	New York
64.72.88.0/21	2.0K	29.6%	Crown Castle Fiber LLC	US	New York	Poughkeepsie
64.238.136.0/21	2.0K	94.4%	Crown Castle Fiber LLC	US	Massachusetts	Brockton
66.206.112.0/21	2.0K	55.6%	Crown Castle Fiber LLC	US	Texas	Houston
67.208.168.0/21	2.0K	7.6%	Crown Castle Fiber LLC	US	—	—
68.171.192.0/21	2.0K	67.7%	Crown Castle Fiber LLC	US	Texas	Houston
69.64.208.0/21	2.0K	49.3%	Crown Castle Fiber LLC	US	Connecticut	Cheshire
74.113.48.0/21	2.0K	4.9%	Crown Castle Fiber LLC	US	Indiana	Indpls
76.8.72.0/21	2.0K	20.3%	Crown Castle Fiber LLC	US	—	—
97.107.168.0/21	2.0K	4.2%	Crown Castle Fiber LLC	US	New Jersey	Perth Amboy
104.129.72.0/21	2.0K	47.9%	Crown Castle Fiber LLC	US	New York	Central Islip
104.129.80.0/21	2.0K	37.2%	Crown Castle Fiber LLC	US	New York	New York
104.207.192.0/21	2.0K	45.0%	Crown Castle Fiber LLC	US	New Jersey	Saddle Brook
104.207.208.0/21	2.0K	39.2%	Crown Castle Fiber LLC	US	New York	New York
104.222.104.0/21	2.0K	67.2%	Crown Castle Fiber LLC	US	Florida	Sarasota
104.247.32.0/21	2.0K	46.3%	Crown Castle Fiber LLC	US	New York	New York
104.247.48.0/21	2.0K	37.6%	Crown Castle Fiber LLC	US	New York	Larchmont
107.181.16.0/21	2.0K	49.7%	Crown Castle Fiber LLC	US	New York	Lynbrook
131.239.8.0/21	2.0K	20.2%	Crown Castle Fiber LLC	US	California	Los Angeles
131.239.40.0/21	2.0K	16.1%	Crown Castle Fiber LLC	US	New York	Rochester
131.239.48.0/21	2.0K	21.7%	Crown Castle Fiber LLC	US	Connecticut	Bridgeport
131.239.88.0/21	2.0K	13.6%	Crown Castle Fiber LLC	US	New York	New York
131.239.160.0/21	2.0K	7.2%	Crown Castle Fiber LLC	US	Pennsylvania	Philadelphia
144.121.8.0/21	2.0K	23.7%	Crown Castle Fiber LLC	US	Massachusetts	Boston
144.121.16.0/21	2.0K	22.6%	Crown Castle Fiber LLC	US	Massachusetts	Medford
144.121.32.0/21	2.0K	15.9%	Crown Castle Fiber LLC	US	Massachusetts	Worcester
144.121.48.0/21	2.0K	24.0%	Crown Castle Fiber LLC	US	—	—
144.121.64.0/21	2.0K	19.9%	Crown Castle Fiber LLC	US	New York	New York
144.121.80.0/21	2.0K	23.5%	Crown Castle Fiber LLC	US	New York	New York
144.121.128.0/21	2.0K	15.8%	Crown Castle Fiber LLC	US	North Carolina	Raleigh
144.121.152.0/21	2.0K	11.5%	Crown Castle Fiber LLC	US	Pennsylvania	Philadelphia
144.121.184.0/21	2.0K	13.6%	Crown Castle Fiber LLC	US	Indiana	Indianapolis
144.121.208.0/21	2.0K	15.5%	Crown Castle Fiber LLC	US	Connecticut	Shelton
144.121.232.0/21	2.0K	15.2%	Crown Castle Fiber LLC	US	New York	New York
151.181.40.0/21	2.0K	0.9%	Crown Castle Fiber LLC	US	Connecticut	Bridgeport
151.181.56.0/21	2.0K	0.4%	Crown Castle Fiber LLC	US	New York	Rochester
151.181.80.0/21	2.0K	0.3%	Crown Castle Fiber LLC	US	New York	Syracuse
151.181.224.0/21	2.0K	7.3%	Crown Castle Fiber LLC	US	New York	Buffalo
160.72.0.0/21	2.0K	17.7%	Crown Castle Fiber LLC	US	California	Los Angeles
160.72.56.0/21	2.0K	16.4%	Crown Castle Fiber LLC	US	Delaware	Wilmington
160.72.104.0/21	2.0K	0.0%	—	US	New York	New York
160.72.168.0/21	2.0K	17.8%	Crown Castle Fiber LLC	US	Connecticut	Waterbury
160.72.192.0/21	2.0K	18.6%	Crown Castle Fiber LLC	US	California	Los Angeles
160.72.232.0/21	2.0K	11.2%	Crown Castle Fiber LLC	US	Massachusetts	Boston
173.225.56.0/21	2.0K	8.9%	Crown Castle Fiber LLC	US	New York	Buffalo
204.9.240.0/21	2.0K	45.1%	Crown Castle Fiber LLC	US	Florida	Weston
208.99.240.0/21	2.0K	8.9%	Crown Castle Fiber LLC	US	New York	Buffalo
209.148.32.0/21	2.0K	33.4%	Crown Castle Fiber LLC	US	California	Los Angeles
209.148.48.0/21	2.0K	15.7%	Crown Castle Fiber LLC	US	Michigan	Southfield
209.160.136.0/21	2.0K	25.5%	Crown Castle Fiber LLC	US	New Jersey	Union
209.160.192.0/21	2.0K	12.5%	Crown Castle Fiber LLC	US	Florida	Fort Lauderdale
209.160.208.0/21	2.0K	29.1%	Crown Castle Fiber LLC	US	Pennsylvania	Philadelphia
209.160.224.0/21	2.0K	14.1%	Crown Castle Fiber LLC	US	Illinois	Waukegan
216.57.128.0/21	2.0K	52.9%	Crown Castle Fiber LLC	US	Arizona	Phoenix
216.57.144.0/21	2.0K	59.2%	Crown Castle Fiber LLC	US	Massachusetts	Norwood

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS46887 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

Prefix	Announcement samples	Last seen
144.121.35.0/24	446,871	2026-07-17 17:15:05
9.179.231.0/24	36,336	2026-07-18 11:59:04
8.41.200.0/24	24,571	2026-07-18 11:59:04
144.121.41.0/24	17,508	2026-07-18 11:59:59
9.179.56.0/22	15,051	2026-07-18 11:59:04
207.180.61.0/24	12,811	2026-07-18 12:00:40
208.90.76.0/24	12,587	2026-07-18 12:00:40
162.249.152.0/22	12,502	2026-07-18 12:00:40
168.245.237.0/24	12,483	2026-07-18 12:00:05
168.245.236.0/24	12,465	2026-07-18 12:00:05
131.239.139.0/24	11,998	2026-07-18 12:00:40
160.72.209.0/24	11,769	2026-07-18 12:00:40
131.239.103.0/24	10,971	2026-07-18 12:00:01
131.239.132.0/23	10,938	2026-07-18 12:00:01
192.231.39.0/24	10,909	2026-07-18 12:00:40
216.57.128.0/22	10,694	2026-07-18 12:00:01
209.160.232.0/24	10,663	2026-07-18 12:00:45
208.49.46.0/23	10,421	2026-07-18 12:00:41
9.179.228.0/24	10,035	2026-07-18 11:59:04
199.88.141.0/24	9,831	2026-07-18 12:00:40
192.154.112.0/21	9,593	2026-07-18 12:00:41
9.179.230.0/24	9,522	2026-06-30 22:44:52
192.148.8.0/22	8,903	2026-07-18 12:00:40
104.222.100.0/22	8,501	2026-07-18 12:00:40
104.222.104.0/21	8,499	2026-07-18 12:00:40
169.139.0.0/20	8,493	2026-07-18 12:00:45
169.139.0.0/21	8,480	2026-07-18 12:00:45
169.139.8.0/21	8,454	2026-07-18 12:00:45
209.160.231.0/24	8,013	2026-07-18 12:00:45
209.160.167.0/24	8,007	2026-07-18 12:00:45
104.152.56.0/22	7,885	2026-07-18 12:00:45
64.20.170.0/23	7,865	2026-07-18 11:59:58
199.188.235.0/24	7,849	2026-07-18 12:00:45
9.179.4.0/22	7,839	2026-07-18 11:59:04
209.80.159.0/24	7,821	2026-07-18 12:00:40
68.171.192.0/22	7,821	2026-07-18 11:59:58
9.179.8.0/22	7,805	2026-07-18 11:59:04
131.239.102.0/24	7,793	2026-07-18 11:59:58
131.239.101.0/24	7,787	2026-07-18 11:59:58
131.239.240.0/22	7,786	2026-07-18 11:59:58
104.129.68.0/22	7,782	2026-07-18 11:59:58
131.239.212.0/22	7,757	2026-07-18 11:59:58
209.160.228.0/22	7,753	2026-07-18 11:59:58
170.55.165.0/24	7,752	2026-07-18 12:00:45
169.139.115.0/24	7,751	2026-07-18 12:00:45
209.160.164.0/22	7,745	2026-07-18 11:59:58
216.57.132.0/22	7,741	2026-07-18 11:59:58
151.181.94.0/23	7,731	2026-07-18 11:59:58
209.160.212.0/22	7,730	2026-07-18 11:59:58
76.8.88.0/22	7,730	2026-07-18 11:59:58

Showing top 50 of 810 announced prefixes by sample volume.

Frequently Asked Questions

What is AS46887?

AS46887 is an Autonomous System Number assigned to Crown Castle Fiber LLC. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS46887 announce?

AS46887 announces 822.0K IPv4 addresses distributed across 510 routed CIDR prefixes. The network is registered in United States.

Who operates AS46887?

AS46887 is operated by Crown Castle Fiber LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS46887 registered in?

AS46887 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 12:40:28 UTC