AS5774 — USPS-001
AS5774 announces 3 IPv4 prefixes covering 196,608 addresses and 1 IPv6 prefixes.
About this network
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 56.0.0.0/8 range, including large aggregates like 56.105.0.0/16 and 56.235.0.0/16. 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.
Announced prefixes
- 56.0.0.0/16
- 56.105.0.0/16
- 56.235.0.0/16
- 2610:68::/32
Upstream networks
- AS6224 CenturyLink Communications, LLC
- AS701 Verizon Business
- AS4296 CenturyLink Communications, LLC
- AS13367 Comcast Cable Communications, LLC
- AS7018 AT&T Enterprises, LLC
- AS33651 Comcast Cable Communications, LLC
- AS33667 Comcast Cable Communications, LLC
Adjacent networks
BGP / ASN / CIDR
awaiting query
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IPv4
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IPv6
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED