AS3401
City of Seattle, Dept. of Admin. Services
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 Seattle
Seattle is the most populous city in the U.S. state of Washington and the Pacific Northwest region of North America.
Network profile
Source: PeeringDB →Present at 1 internet exchange: SIX Seattle: MTU 1500
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 156.74.248.0/21 | 2.0K |
5.5%
|
City of Seattle, Dept. of Admin. Services | US | Washington | Seattle |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS3401 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 |
|---|---|---|
| 156.74.248.0/22 | 10,304 | 2026-08-02 22:34:30 |
| 156.74.248.0/21 | 10,302 | 2026-08-02 22:34:30 |
| 156.74.252.0/22 | 6,223 | 2026-08-02 23:01:36 |
Frequently Asked Questions
What is AS3401?
AS3401 is an Autonomous System Number assigned to City of Seattle, Dept. of Admin. Services. 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 AS3401 announce?
AS3401 announces 2.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS3401?
AS3401 is operated by City of Seattle, Dept. of Admin. Services. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS3401 registered in?
AS3401 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
