143.74.28.0/23
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-11-07 | 2026-11-08 | AS1540 | Headquarters, USAISC |
| 2026-10-11 | 2026-10-31 | AS1540 | Headquarters, USAISC |
| 2026-10-07 | 2026-10-09 | AS1540 | Headquarters, USAISC |
| 2026-09-29 | 2026-10-02 | AS1540 | Headquarters, USAISC |
| 2026-09-25 | 2026-09-26 | AS1540 | Headquarters, USAISC |
| 2026-09-17 | 2026-09-19 | AS1540 | Headquarters, USAISC |
| 2026-09-01 | 2026-09-11 | AS1540 | Headquarters, USAISC |
| 2026-08-28 | 2026-08-29 | AS1540 | Headquarters, USAISC |
| 2026-08-26 | 2026-08-27 | AS1540 | Headquarters, USAISC |
| 2026-08-12 | 2026-08-21 | AS1540 | Headquarters, USAISC |
| 2026-08-07 | 2026-08-09 | AS1540 | Headquarters, USAISC |
| 2026-07-28 | 2026-08-01 | AS1540 | Headquarters, USAISC |
| 2026-07-23 | 2026-07-25 | AS1540 | Headquarters, USAISC |