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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 128.255.0.0/16 | 65.5K |
39.5%
|
University of Iowa | US | Iowa | Iowa City |
| 129.255.0.0/16 | 65.5K |
7.4%
|
University of Iowa | US | Iowa | Iowa City |
| 198.49.182.0/24 | 256 |
12.9%
|
University of Iowa | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS3676 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 |
|---|---|---|
| 198.49.182.0/24 | 8,401 | 2026-07-23 14:37:08 |
| 128.255.0.0/16 | 8,273 | 2026-07-23 14:37:57 |
| 129.255.0.0/16 | 8,232 | 2026-07-23 14:37:57 |
Frequently Asked Questions
What is AS3676?
AS3676 is an Autonomous System Number assigned to University of Iowa. 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 AS3676 announce?
AS3676 announces 131.3K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in United States.
Who operates AS3676?
AS3676 is operated by University of Iowa. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS3676 registered in?
AS3676 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
