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Data as of Nov 10, 2026

173.39.244.0/24

No anonymizer space · no proxy exits in 30 days

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

Announcement
173.39.224.0/19
RPKI valid
Announced by
AS13445
Type
Hosting
Risk
50 / 100 · Medium

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
173.36.0.0/14
since Oct 2008
AS109Business8Cisco Systems, Inc.

Registrations in this block

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

RangeAddressesNetnameHolderTypeCreatedAbuse contact
173.36.0.0/14262,144CISCO-GEN-8Cisco Systems, Inc. (CS-2831) · USDirect AllocationAug 15, 2008csirt-notify@cisco.com
└ 173.39.224.0/198,192CISCO-WEBEX-LLCCisco Webex LLC (WEX) · USReassignedOct 2, 2017csirt-notify@cisco.com

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 173.39.224.0/19

Prefix
173.39.224.0/19
Announced by
AS13445 Cisco Webex LLC
Type
Business
RPKI
RPKI valid
Netname
CISCO-WEBEX-LLC
Registrant
Cisco Webex LLC
RIR
ARIN
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

US
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