AS5774
United States Postal Service
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 |
|---|---|---|---|---|---|---|
| 56.0.0.0/16 | 65.5K |
0.8%
|
United States Postal Service | US | Massachusetts | Springfield |
| 56.105.0.0/16 | 65.5K |
0.1%
|
United States Postal Service | US | — | — |
| 56.235.0.0/16 | 65.5K |
0.0%
|
United States Postal Service | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS5774 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 |
|---|---|---|
| 56.0.64.0/19 | 7,914 | 2026-07-24 23:11:22 |
| 56.105.64.0/18 | 7,912 | 2026-07-24 23:11:22 |
| 56.235.128.0/17 | 7,901 | 2026-07-24 23:11:22 |
| 56.0.208.0/20 | 7,898 | 2026-07-24 23:11:22 |
| 56.105.128.0/24 | 6,333 | 2026-07-24 23:50:22 |
| 56.0.152.0/24 | 6,331 | 2026-07-24 23:50:22 |
| 56.105.156.0/22 | 6,330 | 2026-07-24 23:50:22 |
| 56.0.155.0/24 | 6,327 | 2026-07-24 23:50:22 |
| 56.0.151.0/24 | 6,326 | 2026-07-24 23:50:22 |
| 56.0.146.0/24 | 6,326 | 2026-07-24 23:50:22 |
| 56.105.129.0/24 | 6,324 | 2026-07-24 23:50:22 |
| 56.0.128.0/19 | 6,124 | 2026-07-24 23:11:22 |
| 56.105.84.0/23 | 6,119 | 2026-07-24 23:11:22 |
| 56.105.80.0/22 | 6,091 | 2026-07-24 23:11:22 |
| 56.105.120.0/22 | 6,088 | 2026-07-24 23:11:22 |
| 56.105.128.0/18 | 6,079 | 2026-07-24 23:11:22 |
| 56.105.164.0/22 | 6,078 | 2026-07-24 23:11:22 |
| 56.0.192.0/20 | 6,074 | 2026-07-24 23:11:22 |
| 56.0.32.0/20 | 6,071 | 2026-07-24 23:11:22 |
| 56.235.0.0/17 | 6,070 | 2026-07-24 23:11:22 |
| 56.105.72.0/21 | 6,062 | 2026-07-24 23:11:22 |
| 56.0.0.0/16 | 5,982 | 2026-07-24 23:11:22 |
| 56.105.0.0/16 | 5,973 | 2026-07-24 23:11:22 |
| 56.235.0.0/16 | 5,972 | 2026-07-24 23:11:22 |
| 56.0.91.0/24 | 4,305 | 2026-07-24 23:50:22 |
| 56.105.67.0/24 | 4,289 | 2026-07-24 23:50:22 |
| 56.105.108.0/22 | 4,288 | 2026-07-24 23:50:22 |
| 56.0.95.0/24 | 4,279 | 2026-07-24 23:50:22 |
| 56.105.65.0/24 | 4,274 | 2026-07-24 23:50:22 |
| 56.0.103.0/24 | 3,990 | 2026-07-24 23:50:22 |
Frequently Asked Questions
What is AS5774?
AS5774 is an Autonomous System Number assigned to United States Postal Service. 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 AS5774 announce?
AS5774 announces 196.6K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in United States.
Who operates AS5774?
AS5774 is operated by United States Postal Service. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS5774 registered in?
AS5774 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
