143.74.21.0/24
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-09-01 | 2026-09-05 | AS1540 | Headquarters, USAISC |
| 2026-08-20 | 2026-08-29 | AS1540 | Headquarters, USAISC |
| 2026-08-08 | 2026-08-09 | AS1540 | Headquarters, USAISC |
| 2026-07-23 | 2026-07-25 | AS1540 | Headquarters, USAISC |