| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:06:31 | MA-L | 16.8 million | US | 4 Jun 2001 |
| 04:BC:9F | MA-L | 16.8 million | US | 7 Jan 2022 |
| 10:03:CD | MA-L | 16.8 million | US | 16 Dec 2025 |
| 10:74:C5 | MA-L | 16.8 million | US | 17 Jul 2024 |
| 10:7E:59 | MA-L | 16.8 million | US | 16 Sep 2026 |
| 14:21:03 | MA-L | 16.8 million | US | 14 Jun 2022 |
| 1C:8B:76 | MA-L | 16.8 million | US | 14 Jun 2022 |
| 34:C2:29 | MA-L | 16.8 million | US | 16 Sep 2026 |
| 40:E7:62 | MA-L | 16.8 million | US | 16 Dec 2025 |
| 44:65:7F | MA-L | 16.8 million | US | 24 Apr 2018 |
| 48:77:46 | MA-L | 16.8 million | US | 23 Feb 2019 |
| 4C:43:41 | MA-L | 16.8 million | US | 6 Jun 2023 |
| 5C:DB:36 | MA-L | 16.8 million | US | 17 Jul 2024 |
| 60:DB:98 | MA-L | 16.8 million | US | 11 Sep 2020 |
| 84:D3:43 | MA-L | 16.8 million | US | 24 Nov 2020 |
| 88:DA:36 | MA-L | 16.8 million | US | 3 Jun 2025 |
| B8:94:70 | MA-L | 16.8 million | US | 11 Jul 2021 |
| CC:BE:59 | MA-L | 16.8 million | US | 9 Nov 2016 |
| D0:76:8F | MA-L | 16.8 million | US | 22 Mar 2020 |
| DA:9D:49 | CID | 16.8 million | US | 18 Feb 2022 |
| E0:49:34 | MA-L | 16.8 million | US | 3 Jun 2025 |
| E4:6C:D1 | MA-L | 16.8 million | US | 6 Jun 2023 |
| EC:4F:82 | MA-L | 16.8 million | US | 29 Jan 2015 |
| F8:85:F9 | MA-L | 16.8 million | US | 23 Dec 2020 |
Every block registered to Calix Inc. in the IEEE registries, complete. Free-text search also matches former owners.