Blocks sold in pieces · IPv4 · 65,536 addresses
161.13.0.0/16
Sold in pieces
- Seller
- Southwestern University
- Pieces
- 3 since 2008-12-01, the latest on 2026-02-20
- Share sold
- 25% (16,384 of 65,536 addresses)
- Buyers
- Avative Fiber, Mid Century Communications, Surf Air Wireless, LLC
Now
- ARIN statistics
- Allocated (dated 1992-04-27), allocated (dated 2025-04-21), allocated (dated 2026-02-20), allocated (dated 2026-03-03), allocated (dated 2026-04-27), allocated (dated 2026-07-16) (US), in the latest file
The block as ARIN's statistics listed it on 2008-11-27 or the day before a piece was transferred, whichever is larger. Registries often list what's left in smaller records after a sale.
The pieces
| Date | Piece | What happened | From | To |
|---|---|---|---|---|
| 2025-04-21 | 161.13.32.0/19 | Intra-ARIN transfer | Southwestern University ARIN | Surf Air Wireless, LLC ARIN |
| 2026-02-20 | 161.13.160.0/20 | Intra-ARIN transfer | Southwestern University ARIN | Avative Fiber ARIN |
| 2026-02-20 | 161.13.176.0/20 | Intra-ARIN transfer | Southwestern University ARIN | Mid Century Communications ARIN |
Transfer records (6)
| Date (UTC) | Log | Type | Range moved | From | To |
|---|---|---|---|---|---|
| ARIN | Resource transfer | 161.13.64.0/18 | Southwestern University ARIN | Empire Access ARIN | |
| ARIN | Resource transfer | 161.13.192.0/18 | Southwestern University ARIN | Valley Telephone Cooperative, Inc. ARIN | |
| ARIN | Resource transfer | 161.13.128.0/19 | Southwestern University ARIN | Callabyte Technology, LLC ARIN | |
| ARIN | Resource transfer | 161.13.176.0/20 | Southwestern University ARIN | Mid Century Communications ARIN | |
| ARIN | Resource transfer | 161.13.160.0/20 | Southwestern University ARIN | Avative Fiber ARIN | |
| ARIN | Resource transfer | 161.13.32.0/19 | Southwestern University ARIN | Surf Air Wireless, LLC ARIN |
Every record in the registries' transfer logs that moved any part of this block. A transfer between two registries is in both logs.