Data as of Nov 9, 2026
131.215.135.0/24
1 residential-proxy exit · 30 daysCalifornia Institute of Technology
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Always-on exits
1
100% of its exits
Providers
2
selling exits here
Oct 10, 2026 – Nov 8, 2026
Exits seen per day
2.3K observations
Proxy providers listing exits
- ColaProxy
- Thordata
Network & registry
Announced by
Covering announcement 131.215.0.0/16
- Prefix
- 131.215.0.0/16
- Announced by
- AS31 California Institute of Technology
- Type
- Business
- Proxy exits
- 9
- Always-on exits
- 1
- RPKI
- No RPKI
- Netname
- CALTECH-NET
- Registrant
- California Institute of Technology
- RIR
- ARIN
Origin network
AS31
US
- Name
- California Institute of Technology
- Type
- Education
- Registered
- Sep 21, 1984
- Domain
- caltech.edu
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 131.215.0.0/16
131.215.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on 131.215.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS31 | RADB | California Institute of Technology | MAINT-AS2150 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 131.
215. 0. 0/ 16 - Netname
- CALTECH-NET
- Registrant
- California Institute of Technology
- Organization
- California Institute of Technology (CIT-4-Z)
- Org address
- 1200 East California Boulevard, Pasadena, CA, 91125
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-131-215-0-0-1
- Parent
- NET-131-0-0-0-0
- Created
- Jan 19, 1989
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 19, 1989
- Status
- assigned
Report abuse
Abuse contact
- noc@
caltech. edu - Name
- Caltech Network Operations Center
- Phone
- +1-626-395-3500
- Handle
- CI2-ORG-ARIN