Autonomous System

AS46887

Crown Castle Fiber LLC

Crown Castle Fiber LLC United States 🌐 zayo.com

Announced IPs

813,568

CIDR prefixes

474

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
Active-threat / abuse risk −12
Isp allocation +5
Trust score 58 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 6 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)
167.244.247.0/24	AS13536, AS46887	2026-10-27 09:51:36
170.55.165.0/24	AS33724, AS46887	2026-10-27 09:51:36
167.244.213.0/24	AS13536, AS46887	2026-10-27 09:51:36
38.147.221.0/24	AS174, AS46887	2026-10-27 09:51:36
167.244.212.0/24	AS13536, AS46887	2026-10-27 09:51:36
38.147.220.0/24	AS174, AS46887	2026-10-27 09:51:36

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 ↗

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	1.1%	Crown Castle Fiber LLC	US	Delaware	Magnolia
149.70.0.0/16	65.5K	0.0%	Crown Castle Fiber LLC	US	New York	New York
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	Hollywood
158.59.128.0/17	32.8K	0.7%	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	95.7%	Crown Castle Fiber LLC	US	New Jersey	Newark
9.179.192.0/19	8.2K	0.0%	Crown Castle Fiber LLC	US	—	—
131.239.96.0/19	8.2K	95.6%	Crown Castle Fiber LLC	US	New York	Yonkers
131.239.128.0/19	8.2K	87.0%	Crown Castle Fiber LLC	US	New York	Buffalo
151.181.192.0/19	8.2K	0.5%	Crown Castle Fiber LLC	US	New York	Rochester
160.72.32.0/19	8.2K	93.6%	Crown Castle Fiber LLC	US	Maryland	Baltimore
160.72.64.0/19	8.2K	94.4%	Crown Castle Fiber LLC	US	New York	New York
160.72.128.0/19	8.2K	95.0%	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	86.6%	Crown Castle Fiber LLC	US	Florida	Fort Lauderdale
9.179.240.0/20	4.1K	0.0%	Crown Castle Fiber LLC	US	—	—
65.254.0.0/20	4.1K	98.7%	Crown Castle Fiber LLC	US	New York	Bay Shore
67.208.176.0/20	4.1K	59.9%	Crown Castle Fiber LLC	US	Massachusetts	Boston
72.22.176.0/20	4.1K	40.0%	Crown Castle Fiber LLC	US	Massachusetts	Randolph
76.8.64.0/20	4.1K	47.8%	Crown Castle Fiber LLC	US	New York	New York
131.239.64.0/20	4.1K	75.5%	Crown Castle Fiber LLC	US	Connecticut	Wallingford
131.239.176.0/20	4.1K	98.4%	Crown Castle Fiber LLC	US	Indiana	Indianapolis
136.223.0.0/20	4.1K	0.0%	Crown Castle Fiber LLC	US	—	—
144.121.0.0/20	4.1K	91.8%	Crown Castle Fiber LLC	US	Massachusetts	Boston
144.121.64.0/20	4.1K	98.3%	Crown Castle Fiber LLC	US	New York	New York
144.121.160.0/20	4.1K	97.7%	Crown Castle Fiber LLC	US	Ohio	Cincinnati
144.121.192.0/20	4.1K	98.5%	Crown Castle Fiber LLC	US	New York	Brooklyn
144.121.240.0/20	4.1K	98.5%	Crown Castle Fiber LLC	US	New York	New York
151.181.64.0/20	4.1K	3.4%	Crown Castle Fiber LLC	US	Pennsylvania	Reading
151.181.160.0/20	4.1K	0.9%	Crown Castle Fiber LLC	US	North Carolina	Charlotte
160.72.32.0/20	4.1K	89.0%	Crown Castle Fiber LLC	US	Maryland	Baltimore
160.72.112.0/20	4.1K	97.8%	Crown Castle Fiber LLC	US	New York	Brooklyn
160.72.176.0/20	4.1K	98.5%	Crown Castle Fiber LLC	US	New York	West Haverstraw
160.72.240.0/20	4.1K	98.3%	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	92.3%	Crown Castle Fiber LLC	US	New Jersey	Elizabeth
184.75.192.0/20	4.1K	60.8%	Crown Castle Fiber LLC	US	Massachusetts	Boston
192.235.16.0/20	4.1K	0.4%	Crown Castle Fiber LLC	US	New York	Rexford
209.160.240.0/20	4.1K	86.5%	Crown Castle Fiber LLC	US	California	Los Angeles
8.28.48.0/21	2.0K	1.0%	Crown Castle Fiber LLC	US	Ohio	Dayton
64.20.160.0/21	2.0K	71.9%	Crown Castle Fiber LLC	US	New York	New York
64.238.136.0/21	2.0K	97.8%	Crown Castle Fiber LLC	US	—	—
66.206.112.0/21	2.0K	73.9%	Crown Castle Fiber LLC	US	Texas	Houston
67.208.168.0/21	2.0K	24.8%	Crown Castle Fiber LLC	US	—	—
68.171.192.0/21	2.0K	97.8%	Crown Castle Fiber LLC	US	Florida	Fort Myers
69.64.208.0/21	2.0K	98.0%	Crown Castle Fiber LLC	US	Connecticut	Cheshire
74.113.48.0/21	2.0K	5.0%	Crown Castle Fiber LLC	US	Indiana	Indianapolis
97.107.168.0/21	2.0K	4.1%	Crown Castle Fiber LLC	US	—	—
104.129.72.0/21	2.0K	95.3%	Crown Castle Fiber LLC	US	New York	Central Islip
104.129.80.0/21	2.0K	83.3%	Crown Castle Fiber LLC	US	Connecticut	Wallingford
104.207.192.0/21	2.0K	88.8%	Crown Castle Fiber LLC	US	New Jersey	Hackensack
104.207.208.0/21	2.0K	73.7%	Crown Castle Fiber LLC	US	New York	New York
104.247.32.0/21	2.0K	96.8%	Crown Castle Fiber LLC	US	New York	New York
104.247.48.0/21	2.0K	95.8%	Crown Castle Fiber LLC	US	New York	New York
107.181.16.0/21	2.0K	93.2%	Crown Castle Fiber LLC	US	New York	Lynbrook
131.239.8.0/21	2.0K	98.7%	Crown Castle Fiber LLC	US	California	Pasadena
131.239.40.0/21	2.0K	86.1%	Crown Castle Fiber LLC	US	New York	Rochester
131.239.48.0/21	2.0K	98.9%	Crown Castle Fiber LLC	US	Connecticut	Haddam
131.239.88.0/21	2.0K	99.0%	Crown Castle Fiber LLC	US	New York	New York
131.239.160.0/21	2.0K	53.1%	Crown Castle Fiber LLC	US	Pennsylvania	Philadelphia
131.239.176.0/21	2.0K	98.4%	Crown Castle Fiber LLC	US	Ohio	Columbus
144.121.16.0/21	2.0K	98.7%	Crown Castle Fiber LLC	US	Massachusetts	Boston
144.121.32.0/21	2.0K	97.9%	Crown Castle Fiber LLC	US	Massachusetts	Somerville
144.121.48.0/21	2.0K	92.7%	Crown Castle Fiber LLC	US	—	—
144.121.80.0/21	2.0K	98.3%	Crown Castle Fiber LLC	US	New York	Poughkeepsie
144.121.128.0/21	2.0K	98.2%	Crown Castle Fiber LLC	US	Virginia	Vienna
144.121.152.0/21	2.0K	98.8%	Crown Castle Fiber LLC	US	Maryland	Elkton
144.121.184.0/21	2.0K	98.8%	Crown Castle Fiber LLC	US	—	—
144.121.208.0/21	2.0K	98.6%	Crown Castle Fiber LLC	US	New York	New York
144.121.232.0/21	2.0K	98.7%	Crown Castle Fiber LLC	US	New York	The Bronx
151.181.40.0/21	2.0K	2.9%	Crown Castle Fiber LLC	US	New York	Buffalo
151.181.56.0/21	2.0K	0.9%	Crown Castle Fiber LLC	US	New York	Millbrook
151.181.80.0/21	2.0K	0.7%	Crown Castle Fiber LLC	US	New Jersey	Jersey City
151.181.224.0/21	2.0K	26.1%	Crown Castle Fiber LLC	US	New York	Buffalo
160.72.0.0/21	2.0K	97.9%	Crown Castle Fiber LLC	US	California	Los Angeles
160.72.56.0/21	2.0K	98.1%	Crown Castle Fiber LLC	US	Delaware	Wilmington
160.72.104.0/21	2.0K	98.3%	Crown Castle Fiber LLC	US	Connecticut	Darien
160.72.168.0/21	2.0K	97.9%	Crown Castle Fiber LLC	US	New York	New York
160.72.192.0/21	2.0K	98.4%	Crown Castle Fiber LLC	US	California	Los Angeles
160.72.232.0/21	2.0K	98.1%	Crown Castle Fiber LLC	US	Massachusetts	Boston
173.225.56.0/21	2.0K	11.4%	Crown Castle Fiber LLC	US	—	—
208.99.240.0/21	2.0K	11.9%	Crown Castle Fiber LLC	US	New York	Syracuse
209.148.32.0/21	2.0K	49.4%	Crown Castle Fiber LLC	US	California	Rancho Cucamonga
209.148.48.0/21	2.0K	24.0%	Crown Castle Fiber LLC	US	—	—
209.160.136.0/21	2.0K	98.7%	Crown Castle Fiber LLC	US	New Jersey	Union
209.160.192.0/21	2.0K	38.7%	Crown Castle Fiber LLC	US	Florida	Fort Lauderdale
209.160.208.0/21	2.0K	98.8%	Crown Castle Fiber LLC	US	Pennsylvania	Philadelphia
209.160.224.0/21	2.0K	51.0%	Crown Castle Fiber LLC	US	Illinois	Berwyn
216.57.128.0/21	2.0K	90.0%	Crown Castle Fiber LLC	US	Florida	Miami
216.57.144.0/21	2.0K	99.3%	Crown Castle Fiber LLC	US	—	—
9.179.224.0/22	1.0K	0.0%	Crown Castle Fiber LLC	US	—	—
9.179.236.0/22	1.0K	0.0%	Crown Castle Fiber LLC	US	—	—
64.20.188.0/22	1.0K	97.6%	Crown Castle Fiber LLC	US	Connecticut	New Haven
64.72.64.0/22	1.0K	88.5%	Crown Castle Fiber LLC	US	—	—
64.72.72.0/22	1.0K	67.0%	Crown Castle Fiber LLC	US	New York	Mount Vernon
64.72.84.0/22	1.0K	62.0%	Crown Castle Fiber LLC	US	New York	Poughkeepsie
64.72.88.0/22	1.0K	42.0%	Crown Castle Fiber LLC	US	—	—
64.238.128.0/22	1.0K	98.6%	Crown Castle Fiber LLC	US	—	—

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	1,401,074	2026-10-27 04:47:28
8.41.200.0/24	87,470	2026-10-27 09:16:17
9.179.231.0/24	59,201	2026-10-27 09:16:26
144.121.41.0/24	51,081	2026-10-27 09:17:46
158.59.146.0/24	46,868	2026-10-27 09:16:26
158.59.128.0/18	46,765	2026-10-27 09:16:26
192.231.39.0/24	46,763	2026-10-27 09:25:55
158.59.192.0/18	46,753	2026-10-27 09:16:26
9.179.56.0/22	44,751	2026-10-27 09:16:27
76.78.235.0/24	43,151	2026-10-27 09:16:26
131.239.61.0/24	40,529	2026-10-27 09:19:48
208.49.46.0/23	40,525	2026-10-27 09:16:26
207.180.61.0/24	39,168	2026-10-27 09:16:17
208.90.76.0/24	38,916	2026-10-27 09:16:17
198.140.211.0/24	38,672	2026-10-27 09:16:26
131.239.103.0/24	37,491	2026-10-27 09:25:21
131.239.132.0/23	37,275	2026-10-27 09:25:21
144.121.0.0/18	37,245	2026-10-27 09:20:06
66.37.42.0/24	36,626	2026-10-27 09:16:26
162.249.152.0/22	36,492	2026-10-27 09:16:26
131.239.34.0/24	36,250	2026-10-27 09:16:17
104.247.61.0/24	36,221	2026-10-27 09:16:26
131.239.4.0/24	35,789	2026-10-27 09:19:46
192.154.112.0/21	35,760	2026-10-27 09:24:05
162.220.40.0/21	35,679	2026-10-27 09:20:04
157.206.108.0/24	35,559	2026-10-27 09:16:26
169.139.0.0/20	35,392	2026-10-27 09:25:53
169.139.8.0/21	34,972	2026-10-27 09:25:53
8.29.211.0/24	34,842	2026-10-27 09:16:26
8.29.210.0/24	34,817	2026-10-27 09:16:26
130.250.97.0/24	34,650	2026-10-27 09:16:26
131.239.139.0/24	34,603	2026-10-27 09:25:53
151.181.72.0/24	34,601	2026-10-27 09:17:46
216.57.128.0/22	34,525	2026-10-27 09:25:21
209.80.159.0/24	34,336	2026-10-27 09:16:17
64.112.182.0/23	34,270	2026-10-27 09:16:26
67.208.176.0/20	34,151	2026-10-27 09:17:46
69.195.47.0/24	34,091	2026-10-27 09:16:26
72.22.164.0/23	34,041	2026-10-27 09:17:46
69.195.38.0/24	34,010	2026-10-27 09:16:26
69.195.33.0/24	33,988	2026-10-27 09:16:26
74.113.52.0/24	33,986	2026-10-27 09:16:26
67.208.190.0/24	33,975	2026-10-27 09:16:26
69.46.234.0/24	33,973	2026-10-27 09:17:46
67.208.191.0/24	33,960	2026-10-27 09:16:26
65.254.4.0/24	33,959	2026-10-27 09:17:46
74.113.48.0/21	33,933	2026-10-27 09:16:26
74.113.53.0/24	33,928	2026-10-27 09:16:26
67.208.184.0/24	33,927	2026-10-27 09:16:26
9.179.4.0/22	33,921	2026-10-27 09:16:27

Showing top 50 of 824 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 813.6K IPv4 addresses distributed across 474 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: 2026-10-27 09:54:05 UTC