Blocks sold in pieces · IPv4 · 32,768 addresses
161.13.128.0/17
Sold in pieces
- Seller
- Southwestern University
- Pieces
- 4 since 2026-01-01, the latest on 2026-04-27
- Share sold
- 100% (32,768 of 32,768 addresses)
- Buyers
- Avative Fiber, Callabyte Technology, LLC, Mid Century Communications, Valley Telephone Cooperative, Inc.
Now
- ARIN statistics
- Allocated (dated 2026-02-20), allocated (dated 2026-03-03), allocated (dated 2026-04-27) on 2026-10-09 (US)
The block as ARIN's statistics listed it on 2025-12-31 or the day before a piece was transferred, whichever is larger. ARIN often lists what's left in smaller records after a sale.
The pieces
| Date | Piece | What happened | From | To |
|---|---|---|---|---|
| 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 |
| 2026-03-03 | 161.13.128.0/19 | Intra-ARIN transfer | Southwestern University ARIN | Callabyte Technology, LLC ARIN |
| 2026-04-27 | 161.13.192.0/18 | Intra-ARIN transfer | Southwestern University ARIN | Valley Telephone Cooperative, Inc. ARIN |
Transfer records (4)
| Date (UTC) | Type | Range moved | From | To |
|---|---|---|---|---|
| Resource transfer | 161.13.192.0/18 | Southwestern University ARIN | Valley Telephone Cooperative, Inc. ARIN | |
| Resource transfer | 161.13.128.0/19 | Southwestern University ARIN | Callabyte Technology, LLC ARIN | |
| Resource transfer | 161.13.176.0/20 | Southwestern University ARIN | Mid Century Communications ARIN | |
| Resource transfer | 161.13.160.0/20 | Southwestern University ARIN | Avative Fiber ARIN |
Every record in ARIN's transfer log that moved any part of this block, back to 2009.