The IEEE registry carries 3 blocks registered to TELLABS OPERATIONS, INC., together 33.6 million addresses, first observed 22 Apr 1998, most recently 10 Oct 2010.
Registered in US.
| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:A0:FF | MA-L | 16.8 million | US | 22 Apr 1998 |
| 00:B0:C7 | MA-L | 16.8 million | US | 8 Sep 2000 |
| 00:50:C2:D3:D | IAB | 4.1 thousand | US | 10 Oct 2010 |
Every block registered to TELLABS OPERATIONS, INC. in the IEEE registries, complete. Free-text search also matches former owners.
Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.