Columbia University
US. Active in the transfer logs from 20 Nov 2025 to 20 Nov 2025 in this period.
11.8Kaddresses bought in 6 transfers
0addresses sold in 0 transfers
+11.8Knet change in address space
6 transfers
Every range this organisation was on either side of, newest first, including mergers and acquisitions. Addresses are the size of the range; a block is shown when the range is one CIDR prefix.
| Date | Range | Block | Addresses | Side | Counterparty | Registries | Kind |
|---|---|---|---|---|---|---|---|
| 20 Nov 2025 | 209.2.48.0 – 209.2.51.255 | /22 | 1K | Bought | Windstream Communications LLC (US) | ARIN | Market transfer |
| 20 Nov 2025 | 209.2.224.0 – 209.2.239.255 | /20 | 4.1K | Bought | Windstream Communications LLC (US) | ARIN | Market transfer |
| 20 Nov 2025 | 209.2.185.0 – 209.2.185.255 | /24 | 256 | Bought | Windstream Communications LLC (US) | ARIN | Market transfer |
| 20 Nov 2025 | 209.2.208.0 – 209.2.223.255 | /20 | 4.1K | Bought | Windstream Communications LLC (US) | ARIN | Market transfer |
| 20 Nov 2025 | 209.2.47.0 – 209.2.47.255 | /24 | 256 | Bought | Windstream Communications LLC (US) | ARIN | Market transfer |
| 20 Nov 2025 | 207.10.136.0 – 207.10.143.255 | /21 | 2K | Bought | Windstream Communications LLC (US) | ARIN | Market transfer |