AS4889
United States Postal Service Office of Inspector General
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 →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 192.154.124.0/23 | 512 |
0.0%
|
United States Postal Service Office of Inspector General | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS4889 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 |
|---|---|---|
| 192.154.124.0/24 | 6,965 | 2026-07-21 22:11:31 |
| 192.154.125.0/24 | 6,208 | 2026-07-21 22:38:55 |
| 192.154.124.0/23 | 4,327 | 2026-08-02 20:01:16 |
Frequently Asked Questions
What is AS4889?
AS4889 is an Autonomous System Number assigned to United States Postal Service Office of Inspector General. 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 AS4889 announce?
AS4889 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS4889?
AS4889 is operated by United States Postal Service Office of Inspector General. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS4889 registered in?
AS4889 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
