Autonomous system
AS5774 USPS-001
Unclassified ARIN
Summary
United States Postal Service
government enterprise legacy
USPS-001 is the United States Postal Service, the federal agency that delivers the mail. This is the Postal Service's own network, not a commercial ISP.
What it's used for
- Corporate and operational networking for USPS: retail post offices, mail processing and distribution centers, and the agency's public-facing systems such as usps.com tracking and shipping tools.
Notable
- An IP here belongs to a US federal government agency, so traffic from this AS is Postal Service infrastructure or staff, not consumer broadband.
- The entire announced footprint sits inside the legacy
56.0.0.0/8range, including large aggregates like56.105.0.0/16and56.235.0.0/16. Roughly 196,000 addresses are routed here, a substantial block for a single agency.
Interesting
- USPS is one of the few civilian federal agencies that operates its own autonomous system rather than sitting behind a carrier or a shared government network.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
7 upstream, 0 downstream and 9 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 38 prefixes · 197K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 40 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5774- Registry name
- USPS-001
- Registrant
- United States Postal Service
- Abuse contact
- domainadmin@imail.usps.gov
- Registered
- 1995-10-18
- Last changed
- 2024-12-26
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 32 with no ROA
- ROAs
- 0 authorising AS5774
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 32 announcements
- Route objects
- 0 naming AS5774
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,779 prefixes, as published 2026-10-22. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere