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Data as of Nov 3, 2026

40.80.0.0/12

No anonymizer space

Microsoft Corporation

Announcement

this exact prefix

RPKI valid

Announced by

Type

Hosting

Announcements

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
40.80.71.0/24 since Dec 2024	AS8069	Hosting	Microsoft Corporation
40.87.39.0/24 since Jun 2025	AS8069	Hosting	Microsoft Corporation

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

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

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
40.80.0.0/12	AS8075	/12	ARIN	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS8075	RADB	Microsoft	MAINT-AS8075	Nov 13, 2023

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
40.90.4.0/24	AS8068	RADB	Microsoft Edge	MAINT-AS8075	Nov 13, 2023
40.90.68.0/24	AS8068	RADB	Microsoft	MAINT-AS8075	Nov 13, 2023
40.95.86.0/23	AS8075	RADB	Microsoft	MAINT-AS8075	Nov 13, 2023
40.95.238.0/23	AS8075	RADB	Microsoft Middle East	MAINT-AS8075	Nov 13, 2023