Data as of Nov 10, 2026

173.39.224.0/19

No anonymizer space · no proxy exits in 30 days

Cisco Webex LLC · space held by Cisco Systems, Inc.

Announcement

this exact prefix

RPKI valid

Announced by

AS13445

Type

Hosting

Risk

50 / 100 · Medium

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
173.36.0.0/14 since Oct 2008	AS109	Business	8	Cisco Systems, Inc.

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.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
173.36.0.0/14	262,144	CISCO-GEN-8	Cisco Systems, Inc. (CS-2831) · US	Direct Allocation	Aug 15, 2008	csirt-notify@cisco.com
└ 173.39.224.0/19	8,192	CISCO-WEBEX-LLC	Cisco Webex LLC (WEX) · US	Reassigned	Oct 2, 2017	csirt-notify@cisco.com

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Registry

Holder

Organization: Cisco Systems, Inc.
Handle: CS-2831
Range: 173.36.0.0/14
Registration type: Direct Allocation
Record created: Aug 15, 2008

Origin network

AS13445

Name: Cisco Webex LLC
Type: Business
Registered: Jun 9, 1999
Domain: webex.com
Website: www.webex.com/
Industry: Online Music and Video Streaming Services
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
173.39.224.0/19	AS13445	/24	ARIN	RPKI valid
173.38.0.0/15	AS198949	/24	ARIN	Another network
173.36.0.0/14	AS109	/24	ARIN	Another network

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS13445	RADB	Webex	MAINT-AS13445	Nov 13, 2023
AS198949 not the origin	RADB	cisco	MAINT-AS198949	Nov 13, 2023

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
173.39.224.0/22	AS109	RADB	CISCO SYSTEMS, INC	MAINT-AS109	Nov 13, 2023
173.39.224.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.224.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.224.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.225.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.225.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.225.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.226.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.226.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.226.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.227.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.227.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.227.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.228.0/22	AS109	RADB	CISCO SYSTEMS, INC	MAINT-AS109	Nov 13, 2023
173.39.228.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.228.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.228.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.229.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.229.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.229.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.230.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.230.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.230.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.231.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.231.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.231.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.232.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.232.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.232.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.233.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.233.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.233.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.234.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.234.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.234.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.235.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.235.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.235.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.236.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.236.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.236.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.237.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.237.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.237.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.238.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.238.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.238.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.239.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.239.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.239.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.240.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.240.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.240.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.241.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.241.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.241.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.242.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.242.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.242.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.243.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.243.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.243.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.244.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.244.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.244.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.245.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.245.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.245.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.246.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.246.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.246.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.247.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.248.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.249.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.249.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.249.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.250.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.250.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.250.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.251.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.251.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.251.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.252.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.252.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.252.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.253.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.253.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.253.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.254.0/24	AS13445	RADB	CMI (Customer Route)	MAINT-AS58453	Nov 13, 2023
173.39.254.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023
173.39.254.0/24	AS13445	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Jan 30, 2018
173.39.255.0/24	AS198949	RADB	Cisco-Webex	MAINT-AS198949	Nov 13, 2023

173.39.224.0/19

Announcements

Covering announcements

Registrations in this block

Network & registry

Holder

AS13445

Covering aggregate above, the prefix's own history below

Routing history

Route origin authorizations

Route objects on the exact prefix

Route objects inside

Registration for this announcement

Abuse contact