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Data as of Nov 5, 2026

72.163.0.0/18

No anonymizer space · no proxy exits in 30 days

Cisco Systems, Inc.

Announcement

this exact prefix

RPKI valid

Announced by

Type

Business

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
72.163.0.0/16 since Mar 2007	AS109	Business	4	Cisco Systems, Inc.

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
72.163.4.0/24 since Oct 2014	AS109	Business	Cisco Systems, Inc.
72.163.7.0/24 since Mar 2012	AS109	Business	Cisco Systems, Inc.

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Origin network

AS109

US

Name: Cisco Systems, Inc.
Type: Business
Registered: May 6, 1987
Domain: cisco.com
Website: www.cisco.com
Industry: Computer and Information Technology
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
72.163.0.0/16	AS109	/24	ARIN	RPKI valid
72.163.0.0/16	AS198949	/24	ARIN	Another network

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS109	RADB	CISCO SYSTEMS, INC	MAINT-AS109	Nov 13, 2023
AS109	ARIN	170 West Tasman Drive	MNT-CS-2831	Oct 25, 2023
AS198949 not the origin	RADB	CiscoIT	MAINT-AS198949	Nov 13, 2023

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
72.163.19.0/24	AS109	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
72.163.19.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
72.163.19.0/24	AS109	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Oct 19, 2017