AS3431 — ESNET-AS

AS3431 announces 4 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

An Energy Sciences Network (ESNET-AS) autonomous system. ESnet is the US Department of Energy's science network, linking DOE national laboratories and research facilities to each other and to the wider internet.

What it's used for

• Research and laboratory networking for the DOE complex, with a small announced footprint on this particular AS number.
• No commercial customer base. ESnet exists to serve the department's science mission.

Notable

• Government research address space, not a consumer or hosting network.
• ESnet's sibling registrations: AS3425, AS3428, and AS3443.
• Holding several adjacent low AS numbers is itself a fingerprint of an early, large, multi-site network that grew up alongside the internet.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 192.5.166.0/24
• 192.73.7.0/24
• 192.73.62.0/24
• 192.150.242.0/24

Upstream networks

• AS293 ESnet

Adjacent networks

• AS293 ESnet

Routing security

• RPKI: 0 valid, 0 invalid and 4 not-found announcements; 0 ROAs.
• ASPA: 1 authorised providers.
• IRR: 100% of announcements registered; 5 route objects.
• Listed in as-sets: AS-HURRICANE, AS-TRANSROUTE-SPEC, AS20965:AS-FROM-TEIN-TO-GEANT, AS293:AS-ESNET.