Data as of Nov 14, 2026
173.37.0.0/20
No anonymizer space · no proxy exits in 30 daysCisco Systems, Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 173.36.0.0/14 since Oct 2008 | AS109 | Business | 9 | Cisco Systems, Inc. |
Network & registry
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
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2017
- Current origin since
- Mar 2017 · 9.6 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 173.36.0.0/15 | AS198949 | /24 | ARIN | Another network |
| 173.36.0.0/14 | AS109 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 173.
36. 0. 0/ 14 - Netname
- CISCO-GEN-8
- Registrant
- Cisco Systems, Inc.
- Organization
- Cisco Systems, Inc. (CS-2831)
- Org address
- 251 LITTLE FALLS DRIVE, WILMINGTON, DE, 19808
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-173-36-0-0-1
- Parent
- NET-173-0-0-0-0
- Created
- Aug 15, 2008
- 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