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Data as of Nov 9, 2026

144.121.102.0/24

1 residential-proxy exit · 30 days

Montefiore Medical Center · space held by Zayo Bandwidth

Announcement
this exact prefix
No RPKI
Announced by
AS21821
Type
Business
Risk
0 / 100 · Low

Residential-proxy exits

Proxy exits
1
0.39% of its addresses · 30 days
Providers
9
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

139 observations

Proxy providers listing exits

  • CliProxy
  • EnigmaProxy
  • FastProxy
  • LudaxProxy
  • NovaProxy
  • ProxyEmpire
  • SPYDERPROXY_PREMIUM
  • VantageProxies
  • ZENPROXY_LITE

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.100.0/22
since May 2025
AS46887Internet provider10Zayo Bandwidth
144.121.64.0/18
since May 2016
AS46887Internet provider35
8 always on
Zayo Bandwidth
144.121.0.0/16
since Nov 2021
AS46887Internet provider129
25 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
144.121.0.0/1665,536ZAYO-CCF-144-121-0-0Zayo Bandwidth (ZAYOB) · USDirect AllocationApr 29, 2016abuse@zayo.com
└ 144.121.102.0/24256NET-144-121-102-0-24Montefiore Medicine Academic Health System, Inc. (C06335789) · USReassignedFeb 15, 2017abuse@zayo.com
via ZAYO-CCF-144-121-0-0

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
144.121.0.0/16
Registration type
Direct Allocation
Record created
Apr 29, 2016
Origin network

AS21821

US
Name
Montefiore Medical Center
Type
Business
Registered
Apr 3, 2017
Domain
montefiore.org
Industry
Chemical and Pharmaceutical Manufacturing
Spamhaus ASN-DROP
not listed