asn.dev

Autonomous system

AS1249 FIVE-COLLEGES-AS - University of Massachusetts - AMHERST

Unclassified ARIN

IPv4 addresses 82.43K 4 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 1 downstream
Flagged prefixes 0 none

Summary

Five Colleges, Inc.

United States · AI-generated

education research legacy

The shared network (FIVE-COLLEGES-AS) of Five Colleges, Inc., the consortium of Amherst College, Hampshire College, Mount Holyoke College, Smith College, and the University of Massachusetts Amherst, in the Pioneer Valley of Massachusetts.

What it's used for

  • Shared campus and inter-campus networking for the member institutions.

Notable

  • An academic consortium network, not a commercial ISP. A low AS number reflects an early connection to the research internet.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 1 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS1968UMASSNET248

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-02, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 4 prefixes · 82.43K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS1249
Registry name
FIVE-COLLEGES-AS
Registrant
University of Massachusetts - AMHERST
Abuse contact
abuse@umass.edu
Registered
1991-04-18
Last changed
2024-11-06
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS1249
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
9 naming AS1249

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: 449 networks and 1,846 prefixes, as published 2026-11-03. 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

Cross-check