AS13513 — ALFRED-UNIVERSITY

AS13513 announces 2 IPv4 prefixes covering 65,792 addresses and 0 IPv6 prefixes.

About this network

A small university holding a whole /16, announced as one route with nothing underneath it.

What it's used for

• A university's network. 65,792 addresses across two IPv4 prefixes, 149.84.0.0/16 and 192.31.254.0/24, four observed BGP neighbours, and no IPv6 announced.

Notable

• Both blocks are netname ALFRED, registered to the university.
• The /16 is announced whole rather than split into pieces.
• Six addresses were queried for reverse DNS and none returned a name.

Interesting

• Sixty-five thousand addresses for an institution of a few thousand people is the arithmetic of early allocation. Universities asked, and the answer was a /16, because the pool looked infinite and the paperwork for anything smaller was the same paperwork.
• Announcing it as a single route is the opposite of what most large holders in this range do. It keeps one entry in every router on the internet instead of a dozen, and it works because a campus with four upstreams has nothing to steer between them.
• The extra /24 is from a range handed out in the same era for organisations that needed a second small block. Holding both, decades later, with the same netname on each, is a network nobody has had a reason to reorganise.

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

Announced prefixes

• 149.84.0.0/16
• 192.31.254.0/24

Upstream networks

• AS13536 FirstLight Fiber, Inc.
• AS174 Cogent Communications, LLC
• AS3754 NYSERNet

Adjacent networks

• AS13536 FirstLight Fiber, Inc.
• AS174 Cogent Communications, LLC
• AS3754 NYSERNet

Routing security

• RPKI: 0 valid, 0 invalid and 2 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-HURRICANE, AS-NATL, AS-TRANSROUTE-SPEC, AS-TVC, AS-XO-B, AS13536:AS-CONE, AS35985:AS-CUSTOMERS, AS3630:AS-CONNECTORS, AS3754:AS-CONNECTORS, AS3770:AS-ALL.