AS397142
City of Fort Collins
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.
- Baseline (neutral) 65
- Government allocation +8
- Trust score 73 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Fort Collins
Fort Collins is a home rule city in Larimer County, Colorado, United States, and serves as the county seat and most populous municipality of the county. It is the fourth-most populous city in Colorado with a population of 169,810 in the 2020 census, while the Fort Collins, CO Metropolitan Statistical Area has an estimated 375,000 residents.
Network profile
Source: PeeringDB →Present at 1 internet exchange: IX-Denver: IX-Denver Fabric
AS397142 — global IP footprint
Cities where AS397142 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 38.15.32.0/19 | 8.2K |
76.9%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 38.175.160.0/19 | 8.2K |
0.0%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 38.246.0.0/19 | 8.2K |
0.0%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 167.94.176.0/20 | 4.1K |
45.6%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 38.75.232.0/21 | 2.0K |
82.3%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 38.147.232.0/21 | 2.0K |
80.2%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 38.80.148.0/22 | 1.0K |
81.0%
|
City of Fort Collins | US | California | Sacramento |
| 198.99.80.0/22 | 1.0K |
47.1%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 23.163.32.0/24 | 256 |
0.0%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 192.251.149.0/24 | 256 |
44.1%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 204.107.184.0/24 | 256 |
94.5%
|
City of Fort Collins | US | Colorado | Fort Collins |
| 204.133.79.0/24 | 256 |
0.0%
|
City of Fort Collins | US | — | — |
| 204.133.83.0/24 | 256 |
0.0%
|
City of Fort Collins | US | Colorado | Fort Collins |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS397142 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 |
|---|---|---|
| 167.94.176.0/20 | 16,525 | 2026-09-15 16:18:21 |
| 204.107.184.0/24 | 16,491 | 2026-09-15 16:18:21 |
| 23.163.32.0/24 | 16,485 | 2026-09-15 16:18:21 |
| 38.246.0.0/19 | 16,340 | 2026-09-15 16:18:21 |
| 38.175.160.0/19 | 16,335 | 2026-09-15 16:18:21 |
| 192.251.149.0/24 | 16,334 | 2026-09-15 16:18:21 |
| 38.15.32.0/19 | 16,312 | 2026-09-15 16:18:21 |
| 198.99.80.0/22 | 16,301 | 2026-09-15 16:18:21 |
| 38.147.232.0/21 | 16,266 | 2026-09-15 16:18:21 |
| 38.75.232.0/21 | 16,245 | 2026-09-15 16:18:21 |
| 38.80.148.0/22 | 16,217 | 2026-09-15 16:18:21 |
| 204.133.83.0/24 | 16,064 | 2026-09-15 16:18:21 |
| 204.133.79.0/24 | 16,051 | 2026-09-15 16:18:21 |
Frequently Asked Questions
What is AS397142?
AS397142 is an Autonomous System Number assigned to City of Fort Collins. 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 AS397142 announce?
AS397142 announces 36.1K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in United States.
Who operates AS397142?
AS397142 is operated by City of Fort Collins. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS397142 registered in?
AS397142 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
