LAYER3 INTEL
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Data as of Nov 5, 2026

204.137.21.0/24

No anonymizer space · no proxy exits in 30 days

Microsoft Corporation · space held by Davidson Kempner Capital Management LP

Announcement
this exact prefix
RPKI valid
Announced by
AS8075
Type
Hosting
Risk
50 / 100 · Medium
Recent change
New origin Sep 2026
its first announcement on record

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
204.137.16.0/212,048DKCML-2Davidson Kempner Capital Management LP (DKCML-2) · USDirect AllocationFeb 17, 2026networks@dkpartners.com
└ 204.137.21.0/24256204-137-21-0-24-ZE1-BYOIPunknownReassignedMar 21, 2026networks@dkpartners.com
via DKCML-2

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
Davidson Kempner Capital Management LP
Handle
DKCML-2
Range
204.137.16.0/21
Registration type
Direct Allocation
Record created
Feb 17, 2026
Origin network

AS8075

US
Name
Microsoft Corporation
Type
Hosting
Registered
Mar 31, 1997
Domain
microsoft.com
Website
www.microsoft.com
Industry
Software Development
Spamhaus ASN-DROP
not listed