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Data as of Nov 5, 2026

203.17.221.0/24

No anonymizer space · no proxy exits in 30 days

Microsoft Corporation · space held by Austrade

Announcement
203.17.220.0/23
RPKI valid
Announced by
AS8075
Type
Hosting
Risk
50 / 100 · Medium

Registrations in this block

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

RangeAddressesNetnameHolderTypeCreatedAbuse contact
203.17.216.0/212,048AUSTRADE-AUAustrade (ORG-AA20-AP) · AUALLOCATED PORTABLE—ITS-Communications@austrade.gov.au
└ 203.17.220.0/23512AUSTRADE-AUunknownALLOCATED NON-PORTABLE—ITS-Communications@austrade.gov.au

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 203.17.220.0/23

Prefix
203.17.220.0/23
Announced by
AS8075 Microsoft Corporation
Type
Hosting
RPKI
RPKI valid
Netname
AUSTRADE-AU
RIR
APNIC
Registry

Holder

Organization
Austrade
Handle
ORG-AA20-AP
Range
203.17.216.0/21
Registration type
ALLOCATED PORTABLE
Reallocated to
Not named in the registry
Reallocated range
203.17.220.0/23
Reallocation type
ALLOCATED NON-PORTABLE
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