AS5724

Name: AS5724 — University of Massachusetts Medical School
Creator: ipdex

University of Massachusetts Medical School Unknown registered in United States

4IPv4 prefixes

0IPv6 prefixes

#14,146AS Rank

327/327RIS visibility

#6,069Rank in United States

1995-09-06Allocated

University of Massachusetts Medical School (AS5724) — Unknown, registered in United States. announces 4 IPv4 prefixes + 0 IPv6 prefixes. Rank in United States: #6069. Allocated: 1995-09-06.

IPv4 4IPv6 0

Announced prefixes · 4

v4 146.189.0.0/16 unknown
v4 146.189.128.0/21 unknown
v4 146.189.25.0/24 unknown
v4 146.189.26.0/24 unknown

Routing: 4 IPv4 · 0 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	4
2026-06-13	4

AS topology · Customer cone 1

Providers · 3

AS174 Cogent Communications, LLC
AS10578 Harvard University
AS398427 Markley Network Services, LLC

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