Skip to main content
Autonomous System

AS19092

Zayo Bandwidth

Announced IPs
69,376
CIDR prefixes
64
ASN
AS19092

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.

69/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Enterprise allocation +4
  • Trust score 69 / 100

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

About Zayo Group

Zayo Group Holdings, Inc. is an American telecommunications company headquartered in Denver, Colorado, with European headquarters in London.

Founded
2007
Headquarters
Denver
Industry
telecommunication company

Network profile

Source: PeeringDB →
Network type NSP
Geographic scope North America
Traffic ratio Heavy Inbound
Peering policy Restrictive
IRR record AS-360C

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
66.62.0.0/19 8.2K
4.4%
Zayo Bandwidth US
66.62.32.0/20 4.1K
0.7%
Zayo Bandwidth US
66.62.96.0/20 4.1K
1.5%
Zayo Bandwidth US
66.62.208.0/20 4.1K
0.0%
Zayo Bandwidth US
216.166.176.0/20 4.1K
27.9%
Zayo Bandwidth US
66.62.48.0/21 2.0K
6.5%
Zayo Bandwidth US
66.62.80.0/21 2.0K
0.6%
Zayo Bandwidth US
66.62.136.0/21 2.0K
0.0%
Zayo Bandwidth US
66.62.152.0/21 2.0K
0.0%
Zayo Bandwidth US
66.62.168.0/21 2.0K
5.2%
Zayo Bandwidth US
66.62.184.0/21 2.0K
0.0%
Zayo Bandwidth US
66.62.192.0/21 2.0K
1.4%
Zayo Bandwidth US Montana Bozeman
66.62.248.0/21 2.0K
0.1%
Zayo Bandwidth US
216.166.160.0/21 2.0K
0.2%
Zayo Bandwidth US
66.62.56.0/22 1.0K
3.4%
Zayo Bandwidth US
66.62.64.0/22 1.0K
0.2%
Zayo Bandwidth US
66.62.116.0/22 1.0K
0.0%
Zayo Bandwidth US Montana Hamilton
66.62.128.0/22 1.0K
1.1%
Zayo Bandwidth US
66.62.176.0/22 1.0K
0.0%
Zayo Bandwidth US
66.62.200.0/22 1.0K
2.5%
Zayo Bandwidth US Montana Bozeman
66.62.224.0/22 1.0K
0.3%
Zayo Bandwidth US
66.62.232.0/22 1.0K
29.1%
Zayo Bandwidth US
216.166.128.0/22 1.0K
0.4%
Zayo Bandwidth US
216.166.136.0/22 1.0K
26.8%
Zayo Bandwidth US Oregon Hermiston
216.166.144.0/22 1.0K
24.2%
Zayo Bandwidth US Montana Corvallis
216.166.152.0/22 1.0K
0.0%
Zayo Bandwidth US
66.62.62.0/23 512
0.0%
Zayo Bandwidth US
66.62.68.0/23 512
0.0%
Zayo Bandwidth US
66.62.72.0/23 512
0.0%
Zayo Bandwidth US
66.62.78.0/23 512
0.0%
Zayo Bandwidth US
66.62.114.0/23 512
0.0%
Zayo Bandwidth US Montana Hamilton
66.62.134.0/23 512
0.0%
Zayo Bandwidth US
66.62.144.0/23 512
0.0%
Zayo Bandwidth US
66.62.148.0/23 512
0.0%
Zayo Bandwidth US
66.62.162.0/23 512
0.0%
Zayo Bandwidth US
66.62.164.0/23 512
0.0%
Zayo Bandwidth US
66.62.206.0/23 512
49.4%
Zayo Bandwidth US Montana Bozeman
66.62.228.0/23 512
0.2%
Zayo Bandwidth US
66.62.236.0/23 512
99.0%
Zayo Bandwidth US
66.62.246.0/23 512
0.0%
Zayo Bandwidth US
216.166.132.0/23 512
41.6%
Zayo Bandwidth US
216.166.150.0/23 512
0.2%
Zayo Bandwidth US Montana Corvallis
216.166.156.0/23 512
0.0%
Zayo Bandwidth US
66.62.60.0/24 256
0.0%
Zayo Bandwidth US
66.62.74.0/24 256
0.0%
Zayo Bandwidth US
66.62.77.0/24 256
3.5%
Zayo Bandwidth US
66.62.88.0/24 256
0.0%
Zayo Bandwidth US
66.62.90.0/24 256
1.2%
Zayo Bandwidth US
66.62.94.0/24 256
0.0%
Zayo Bandwidth US
66.62.112.0/24 256
0.0%
Zayo Bandwidth US Montana Hamilton
66.62.120.0/24 256
0.0%
Zayo Bandwidth US
66.62.127.0/24 256
0.0%
Zayo Bandwidth US Montana Hamilton
66.62.133.0/24 256
0.0%
Zayo Bandwidth US
66.62.147.0/24 256
0.0%
Zayo Bandwidth US
66.62.150.0/24 256
0.0%
Zayo Bandwidth US
66.62.160.0/24 256
0.4%
Zayo Bandwidth US
66.62.167.0/24 256
0.0%
Zayo Bandwidth US
66.62.204.0/24 256
1.6%
Zayo Bandwidth US
66.62.231.0/24 256
0.0%
Zayo Bandwidth US
216.166.134.0/24 256
0.0%
Zayo Bandwidth US
216.166.141.0/24 256
19.5%
Zayo Bandwidth US Oregon Hermiston
216.166.143.0/24 256
0.0%
Zayo Bandwidth US
216.166.149.0/24 256
0.0%
Zayo Bandwidth US Montana Corvallis
216.166.158.0/24 256
0.0%
Zayo Bandwidth US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS19092 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
66.62.228.0/22 8,514 2026-07-23 15:43:47
66.62.200.0/21 6,706 2026-07-23 15:46:10
66.62.168.0/21 4,808 2026-07-23 15:45:45
66.62.160.0/21 4,803 2026-07-23 15:45:45
66.62.227.0/24 4,794 2026-07-23 15:45:45
66.62.88.0/21 4,702 2026-07-23 15:45:45
66.62.176.0/21 4,684 2026-07-23 15:45:45
66.62.0.0/16 4,561 2026-07-23 15:45:45
66.62.128.0/24 4,508 2026-07-23 15:45:45
216.166.128.0/18 4,320 2026-07-23 15:45:45

Frequently Asked Questions

What is AS19092?

AS19092 is an Autonomous System Number assigned to Zayo Bandwidth. 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 AS19092 announce?

AS19092 announces 69.4K IPv4 addresses distributed across 64 routed CIDR prefixes. The network is registered in United States.

Who operates AS19092?

AS19092 is operated by Zayo Bandwidth. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS19092 registered in?

AS19092 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: 2026-07-23 15:55:31 UTC
Share