Data as of Nov 7, 2026
139.138.41.0/24
No anonymizer space · no proxy exits in 30 daysCisco Systems Ironport Division
Network & registry
Origin network
AS16417
US
- Name
- Cisco Systems Ironport Division
- Type
- Business
- Registered
- Jun 22, 2005
- Domain
- cisco.com
- Website
- www.cisco.com
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2018
- Current origin since
- Nov 2018 · 8.0 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 139.
138. 24. 0 - 139. 138. 47. 255 - Netname
- CISL-7
- Registrant
- Cisco Systems Ironport Division
- Organization
- Cisco Systems Ironport Division (CISL-7)
- Org address
- 170 West Tasman Drive, San Jose, CA, 95134
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-139-138-24-0-1
- Parent
- NET-139-0-0-0-0
- Created
- Jul 6, 2017
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 6, 2017
- Status
- assigned
Report abuse
Abuse contact
- network-abuse@
ironport. com - Name
- Ironport Network Abuse
- Phone
- +1-408-424-1164
- Handle
- INA15-ARIN