AS13506
United States Department of the Treasury
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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 164.95.0.0/16 | 65.5K |
0.0%
|
United States Department of the Treasury | US | Virginia | Ashburn |
| 166.123.0.0/16 | 65.5K |
0.0%
|
United States Department of the Treasury | US | California | San Jose |
| 199.169.197.0/24 | 256 |
0.4%
|
United States Department of the Treasury | US | — | — |
| 199.169.199.0/24 | 256 |
0.0%
|
United States Department of the Treasury | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS13506 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 |
|---|---|---|
| 164.95.0.0/16 | 17,679 | 2026-07-18 12:01:30 |
| 166.123.0.0/16 | 13,241 | 2026-07-18 12:01:29 |
| 164.95.204.0/24 | 11,080 | 2026-07-18 12:01:29 |
| 166.123.204.0/24 | 7,419 | 2026-07-18 12:01:29 |
| 166.123.208.0/24 | 7,225 | 2026-07-18 12:01:29 |
| 164.95.95.0/24 | 5,113 | 2026-07-18 12:01:27 |
| 199.169.197.0/24 | 1,182 | 2026-07-08 23:01:49 |
| 199.169.199.0/24 | 1,165 | 2026-07-08 23:01:49 |
Frequently Asked Questions
What is AS13506?
AS13506 is an Autonomous System Number assigned to United States Department of the Treasury. 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 AS13506 announce?
AS13506 announces 131.6K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in United States.
Who operates AS13506?
AS13506 is operated by United States Department of the Treasury. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS13506 registered in?
AS13506 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
