143.74.0.0/22
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-11-04 | 2026-11-06 | AS1540 | Headquarters, USAISC |
| 2026-10-31 | 2026-11-01 | AS1540 | Headquarters, USAISC |
| 2026-10-21 | 2026-10-24 | AS1540 | Headquarters, USAISC |
| 2026-10-16 | 2026-10-17 | AS1540 | Headquarters, USAISC |
| 2026-10-14 | 2026-10-15 | AS1540 | Headquarters, USAISC |
| 2026-10-06 | 2026-10-09 | AS1540 | Headquarters, USAISC |
| 2026-10-02 | 2026-10-03 | AS1540 | Headquarters, USAISC |
| 2026-09-30 | 2026-10-01 | AS1540 | Headquarters, USAISC |
| 2026-09-18 | 2026-09-19 | AS1540 | Headquarters, USAISC |
| 2026-09-16 | 2026-09-17 | AS1540 | Headquarters, USAISC |
| 2026-09-01 | 2026-09-04 | AS1540 | Headquarters, USAISC |
| 2026-08-25 | 2026-08-26 | AS1540 | Headquarters, USAISC |
| 2026-08-18 | 2026-08-22 | AS1540 | Headquarters, USAISC |
| 2026-08-11 | 2026-08-16 | AS1540 | Headquarters, USAISC |