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Autonomous System

AS3807

University of Montana

Announced IPs
85,760
CIDR prefixes
22
ASN
AS3807

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.

71/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Educational/Research
Geographic scope North America
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS3807:RS-UMTNET

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS3807 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
150.131.0.0/16 3,785 2026-07-23 20:04:56
204.62.203.0/24 3,767 2026-07-23 20:04:56
207.196.153.0/24 3,766 2026-07-23 20:04:56
207.196.240.0/21 3,765 2026-07-23 20:04:56
207.196.172.0/23 3,764 2026-07-23 20:04:56
207.196.175.0/24 3,762 2026-07-23 20:04:56
207.196.168.0/22 3,758 2026-07-23 20:04:56
192.231.192.0/24 3,757 2026-07-23 20:04:56
207.196.192.0/21 3,755 2026-07-23 20:04:56
207.196.178.0/24 3,753 2026-07-23 20:04:56
192.73.48.0/24 3,752 2026-07-23 20:04:56
207.196.136.0/22 3,751 2026-07-23 20:04:56
207.196.184.0/21 3,751 2026-07-23 20:04:56
207.196.144.0/22 3,750 2026-07-23 20:04:56
207.196.167.0/24 3,750 2026-07-23 20:04:56
207.196.154.0/23 3,749 2026-07-23 20:04:56
207.196.174.0/24 3,748 2026-07-23 20:04:56
192.207.124.0/24 3,747 2026-07-23 20:04:56
192.160.47.0/24 3,746 2026-07-23 20:04:56
207.196.200.0/22 3,746 2026-07-23 20:04:56
207.196.158.0/23 3,745 2026-07-23 20:04:56
207.196.132.0/22 3,744 2026-07-23 20:04:56
207.196.148.0/23 3,743 2026-07-23 20:04:56
207.196.180.0/22 3,743 2026-07-23 20:04:56
207.196.176.0/23 3,743 2026-07-23 20:04:56
207.196.129.0/24 3,742 2026-07-23 20:04:56
207.196.156.0/23 3,741 2026-07-23 20:04:56
207.196.140.0/22 3,739 2026-07-23 20:04:56
207.196.204.0/22 3,739 2026-07-23 20:04:56

Frequently Asked Questions

What is AS3807?

AS3807 is an Autonomous System Number assigned to University of Montana. 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 AS3807 announce?

AS3807 announces 85.8K IPv4 addresses distributed across 22 routed CIDR prefixes. The network is registered in United States.

Who operates AS3807?

AS3807 is operated by University of Montana. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS3807 registered in?

AS3807 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 20:10:36 UTC
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