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Data as of Nov 6, 2026

172.87.56.128/28

No anonymizer space · no proxy exits in 30 days

Sentinel Technologies, Inc.

Announcement
172.87.56.0/24
No RPKI
Announced by
AS15294
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeHolderRPKI
172.87.56.0/23
since Jul 2015
AS15294BusinessSentinel Technologies, Inc.

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
172.87.48.0/204,096STI-CS-NETSentinel Technologies, Inc. (SENTI-9) · USDirect AllocationMay 22, 2015ptodd@sentinel.com
└ 172.87.56.128/2816172-87-56-128-28unknown———

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 172.87.56.0/24

Prefix
172.87.56.0/24
Announced by
AS15294 Sentinel Technologies, Inc.
Type
Business
RPKI
No RPKI
Netname
STI-CS-NET
Registrant
Sentinel Technologies, Inc.
RIR
ARIN
Origin network

AS15294

US
Name
Sentinel Technologies, Inc.
Type
Business
Registered
May 19, 2005
Domain
sentinel.com
Industry
Hosting and Cloud Provider
Spamhaus ASN-DROP
not listed