143.74.31.0/24
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-10-27 | 2026-10-29 | AS1540 | Headquarters, USAISC |
| 2026-10-21 | 2026-10-24 | AS1540 | Headquarters, USAISC |
| 2026-10-16 | 2026-10-17 | AS1540 | Headquarters, USAISC |
| 2026-10-07 | 2026-10-08 | AS1540 | Headquarters, USAISC |
| 2026-10-03 | 2026-10-04 | AS1540 | Headquarters, USAISC |
| 2026-09-29 | 2026-10-01 | AS1540 | Headquarters, USAISC |
| 2026-09-25 | 2026-09-26 | AS1540 | Headquarters, USAISC |
| 2026-09-17 | 2026-09-18 | AS1540 | Headquarters, USAISC |
| 2026-09-03 | 2026-09-04 | AS1540 | Headquarters, USAISC |
| 2026-08-26 | 2026-08-27 | AS1540 | Headquarters, USAISC |
| 2026-08-20 | 2026-08-21 | AS1540 | Headquarters, USAISC |
| 2026-08-14 | 2026-08-16 | AS1540 | Headquarters, USAISC |