Data as of Nov 10, 2026
173.39.238.0/24
No anonymizer space · no proxy exits in 30 daysCisco Webex LLC · space held by Cisco Systems, Inc.
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 this block, widest first, each 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@ |
| └ 173.39.224.0/19 | 8,192 | CISCO-WEBEX-LLC | Cisco Webex LLC (WEX) · US | Reassigned | Oct 2, 2017 | csirt-notify@ |
Network & registry
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
Routing timeline
Covering aggregate above, the prefix's own history below
173.39.224.0/19
Routing history
- Pattern
- Stable
- First seen
- Oct 2017
- Current origin since
- Oct 2017 · 9.1 yr
- Origin networks
- 1
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 |
Whois
Registration for this announcement
- Range
- 173.
39. 224. 0/ 19 - Netname
- CISCO-WEBEX-LLC
- Registrant
- Cisco Webex LLC
- Organization
- Cisco Webex LLC (WEX)
- Org address
- 170 W. Tasman Drive, San Jose, CA, 95134
- Org country
- US
- Type
- Reassigned
- Handle
- NET-173-39-224-0-1
- Parent
- NET-173-36-0-0-1
- Created
- Oct 2, 2017
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 15, 2008
- Status
- assigned
Report abuse
Abuse contact
- csirt-notify@
cisco. com - Name
- Cisco CSIRT
- Phone
- +1-408-527-3227
- Handle
- CISCO6-ARIN