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Data as of Nov 5, 2026

160.72.231.0/24

No anonymizer space · no proxy exits in 30 days

Mass General Brigham Incorporated · space held by Zayo Bandwidth

Announcement
this exact prefix
No RPKI
Announced by
AS40831
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
160.72.224.0/20
since Mar 2020
AS46887Internet provider1Zayo Bandwidth
160.72.0.0/16
since Nov 2021
AS46887Internet provider88
8 always on
Zayo Bandwidth

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
160.72.0.0/1665,536ZAYO-CCF-160-72-0-0Zayo Bandwidth (ZAYOB) · USDirect AllocationApr 29, 2016abuse@zayo.com
└ 160.72.231.0/24256NET-160-72-231-0-24Partners Healthcare (C07778540) · USReassignedFeb 24, 2021abuse@zayo.com
via ZAYO-CCF-160-72-0-0

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Registry

Holder

Organization
Zayo Bandwidth
Handle
ZAYOB
Range
160.72.0.0/16
Registration type
Direct Allocation
Record created
Apr 29, 2016
Origin network

AS40831

US
Name
Mass General Brigham Incorporated
Type
Business
Registered
Jul 25, 2017
Domain
massgeneralbrigham.org
Industry
Hospitals and Medical Centers
Spamhaus ASN-DROP
not listed