66.4.19.0/24
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-08-22 | Current | AS19957 | AT&T Enterprises, LLC |
| 2026-06-13 | 2026-08-21 | AS19957 | AT&T Enterprises, LLC |
66.4.19.0/24Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-08-22 | Current | AS19957 | AT&T Enterprises, LLC |
| 2026-06-13 | 2026-08-21 | AS19957 | AT&T Enterprises, LLC |