ONVOY, LLC
20 prefixes in 312 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 312-312 | CHICGOZN01 | 224C | 2018-01-19 | Yes |
| 312-313 | CHICGOZN01 | 224C | 2014-11-10 | Yes |
| 312-348 | CHICGOZN01 | 224C | 2003-11-14 | Yes |
| 312-376 | CHICGOZN01 | 224C | — | Yes |
| 312-392 | CHICGOZN01 | 224C | 2017-10-23 | Yes |
| 312-426 | CHICGOZN01 | 224C | 2026-01-27 | Yes |
| 312-473 | CHICGOZN01 | 224C | 2006-11-15 | Yes |
| 312-500 | CHICGOZN01 | 224C | 2018-05-22 | Yes |
| 312-586 | CHICGOZN01 | 224C | 2016-05-04 | Yes |
| 312-598 | CHICGOZN01 | 224C | 2019-01-24 | Yes |
| 312-600 | CHICGOZN01 | 224C | 2012-05-01 | Yes |
| 312-626 | CHICGOZN01 | 224C | 2008-02-04 | Yes |
| 312-680 | CHICGOZN01 | 224C | 2022-04-29 | Yes |
| 312-748 | CHICGOZN01 | 224C | 2023-05-22 | Yes |
| 312-778 | CHICGOZN01 | 224C | 2015-05-08 | Yes |
| 312-779 | CHICGOZN01 | 224C | 2019-05-13 | Yes |
| 312-820 | CHICGOZN01 | 224C | 2020-01-08 | Yes |
| 312-847 | CHICGOZN01 | 224C | 2019-06-28 | Yes |
| 312-910 | CHICGOZN01 | 224C | 2022-09-19 | Yes |
| 312-964 | CHICGOZN01 | 224C | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.