Data as of Nov 4, 2026
173.36.0.0/15
No anonymizer spaceCisco Systems, Inc.
Announcements
Nesting
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More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 173.36.0.0/17 since Jun 2011 | AS109 | Business | Cisco Systems, Inc. | |
| 173.37.0.0/20 since Mar 2017 | AS109 | Business | Cisco Systems, Inc. | |
| 173.37.16.0/20 since Apr 2017 | AS109 | Business | Cisco Systems, Inc. | |
| 173.37.64.0/18 since May 2009 | AS109 | Business | Cisco Systems, Inc. | |
| 173.37.128.0/19 since Jun 2011 | AS109 | Business | Cisco Systems, Inc. | |
| 173.37.145.0/24 since Oct 2014 | AS109 | Business | Cisco Systems, Inc. | |
| 173.37.160.0/19 since Jun 2010 | AS109 | Business | Cisco Systems, Inc. | |
| 173.37.192.0/18 since May 2012 | AS109 | Business | Cisco Systems, Inc. |
Network & registry
Announced by
Covering announcement 173.36.0.0/14
- Prefix
- 173.36.0.0/14
- Announced by
- AS109 Cisco Systems, Inc.
- Type
- Business
- Proxy exits
- 7
- RPKI
- RPKI valid
- Netname
- CISCO-GEN-8
- Registrant
- Cisco Systems, Inc.
- RIR
- ARIN
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
Who has announced 173.36.0.0/14
173.36.0.0/14
Routing history
- Pattern
- Stable
- First seen
- Oct 2008
- Current origin since
- Oct 2008 · 18 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 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