Autonomous system
AS5724 UMASSMED - University of Massachusetts Medical School
Education ARIN
Summary
UMass Chan Medical School
education university research legacy
The campus network of the University of Massachusetts medical school in Worcester, renamed UMass Chan Medical School in 2021, still registered under the handle UMASSMED.
What it's used for
- Connectivity for the state's public medical school: its schools of medicine, nursing and biomedical sciences, and their research computing.
- Announces the legacy
146.189.0.0/16plus a few more-specific prefixes from within it.
Notable
- Institutional address space, serving faculty, students, labs and clinical research systems rather than subscribers.
- The registry handle still carries the old
UMASSMEDname, a common lag between an institution's rebrand and its network records.
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 2026-11-09, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5724- Registry name
- UMASSMED
- Registrant
- University of Massachusetts Medical School
- Abuse contact
- HostedServices@umassmed.edu
- Registered
- 1995-09-06
- Last changed
- 2023-07-01
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS5724
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 1 naming AS5724
Reputation
Classification and threat
Education University, school or national research and education network.
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: 454 networks and 1,854 prefixes, as published 2026-11-09. 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