Autonomous system
AS14550 MIDDLEBURY-COLLEGE
Unclassified ARIN
Summary
Middlebury College
education research infrastructure
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 toMiddlebury 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
/17for 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. 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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 32.77K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS14550- Registry name
- MIDDLEBURY-COLLEGE
- Registrant
- Middlebury College
- Abuse contact
- pdicovitsky@middlebury.edu
- Registered
- 2000-01-05
- Last changed
- 2012-03-20
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS14550
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 1 announcements
- Route objects
- 0 naming AS14550
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 2026-10-24. 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