AS31
California Institute of Technology — caltech.edu
Summary
| Country |
 United States
|
| Organization | California Institute of Technology |
| Domain | caltech.edu |
| Number of IPv4 | 134,144 |
| Number of IPv6 | 7.9228× 1028 |
| AS Type | Education |
| Registry | ARIN |
| Allocated | September 21, 1984 (about 41 years ago) |
| Updated | August 29, 2023 (about 1 year ago) |
IP Ranges
AS31 announces 12 IPv4 ranges and 1 IPv6 range.
That's a total of 134,144 IPv4 addresses and 7.9228× 1028 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 131.215.0.0/16 |
California Institute of Technology
|
65,536 | ARIN | ALLOCATION |
| 131.215.229.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| 131.215.230.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| 131.215.234.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| 131.215.239.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| 131.215.240.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| 131.215.242.0/23 |
California Institute of Technology
|
512 | ARIN | ALLOCATION |
| 131.215.244.0/23 |
California Institute of Technology
|
512 | ARIN | ALLOCATION |
| 134.4.0.0/16 |
California Institute of Technology
|
65,536 | ARIN | ALLOCATION |
| 192.12.19.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| 192.31.43.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| 192.41.208.0/24 |
California Institute of Technology
|
256 | ARIN | ALLOCATION |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2607:f520::/32 |
California Institute of Technology
|
7.9228× 1028 | ARIN | ALLOCATION |
Peers
AS31 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.
Upstreams
AS31 connects to the global Internet via at least 4 upstream providers. In this setup, AS31 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS31 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.