AS14550 — MIDDLEBURY-COLLEGE

AS14550 announces 1 IPv4 prefixes covering 32,768 addresses and 0 IPv6 prefixes.

About this network

One prefix, one netname, one registrant, and nothing else. This is as small as a routed network gets while still being its own AS.

What it's used for

• A liberal arts college's campus network. 32,768 addresses in a single IPv4 prefix, 140.233.0.0/17, with three observed BGP neighbours and no IPv6 announced.

Notable

• The one block carries the netname MIDDLEBURY, registered to Middlebury College.
• Only three addresses were available to query for reverse DNS, and none returned a name.
• The AS was first seen in the routing tables in 2003, later than most of its neighbours in this range.

Interesting

• A single announcement is the whole point of holding an AS number here. The college does not need to split its space or steer traffic; it needs to be reachable through more than one provider without renumbering when it changes them, and that is exactly what one AS and one prefix buys.
• Three neighbours against one prefix is a better ratio than most of the networks around it. The redundancy is in the upstreams, not in the address plan.
• A /17 for a campus of a few thousand people dates the allocation. Space was handed out by institutional category rather than headcount, and nobody was asked to give it back.
• Announcing no IPv6 in a sector that adopted it early is the more surprising fact on this record.
• The absence of any reverse naming means the campus either resolves internally or has simply never published a zone for its outward-facing addresses.

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

Announced prefixes

• 140.233.0.0/17

Upstream networks

• AS13536 FirstLight Fiber, Inc.
• AS3356 Level 3 Parent, LLC
• AS1351 University of Vermont

Adjacent networks

• AS13536 FirstLight Fiber, Inc.
• AS3356 Level 3 Parent, LLC
• AS1351 University of Vermont