143.74.38.0/24
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-11-10 | Current | AS1540 | Headquarters, USAISC |
| 2026-11-07 | 2026-11-08 | AS1540 | Headquarters, USAISC |
| 2026-10-20 | 2026-10-29 | AS1540 | Headquarters, USAISC |
| 2026-10-16 | 2026-10-18 | AS1540 | Headquarters, USAISC |
| 2026-10-14 | 2026-10-15 | AS1540 | Headquarters, USAISC |
| 2026-10-07 | 2026-10-08 | AS1540 | Headquarters, USAISC |
| 2026-10-02 | 2026-10-03 | AS1540 | Headquarters, USAISC |
| 2026-09-29 | 2026-09-30 | AS1540 | Headquarters, USAISC |
| 2026-09-26 | 2026-09-27 | AS1540 | Headquarters, USAISC |
| 2026-09-12 | 2026-09-17 | AS1540 | Headquarters, USAISC |
| 2026-09-10 | 2026-09-11 | AS1540 | Headquarters, USAISC |
| 2026-09-03 | 2026-09-04 | AS1540 | Headquarters, USAISC |
| 2026-09-01 | 2026-09-02 | AS1540 | Headquarters, USAISC |
| 2026-08-27 | 2026-08-28 | AS1540 | Headquarters, USAISC |
| 2026-08-25 | 2026-08-26 | AS1540 | Headquarters, USAISC |
| 2026-08-19 | 2026-08-21 | AS1540 | Headquarters, USAISC |
| 2026-08-14 | 2026-08-16 | AS1540 | Headquarters, USAISC |
| 2026-08-11 | 2026-08-12 | AS1540 | Headquarters, USAISC |