All assignees
800 prefixes in 773 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 773-700 | — | — | ||
| 773-701 | CHICGOZN10 | 6529 | 2005-09-30 | Yes |
| 773-702 | CHICGOZN07 | 9329 | — | — |
| 773-703 | CHICGOZN10 | 6534 | 2008-09-02 | Yes |
| 773-704 | CHICGOZN03 | 6529 | 2002-01-23 | — |
| 773-705 | CHICGOZN04 | 6333 | 2024-08-28 | Yes |
| 773-706 | CHICGOZN03 | 6333 | 2005-07-18 | Yes |
| 773-707 | CHICGOZN10 | 6534 | 2008-11-05 | Yes |
| 773-708 | CHICGOZN10 | 6534 | 2008-11-05 | Yes |
| 773-709 | CHICGOZN03 | 6534 | 2008-11-05 | Yes |
| 773-710 | CHICGOZN03 | 6534 | 2001-04-16 | — |
| 773-711 | XXXXXXXXXX | MULT | — | — |
| 773-712 | CHICGOZN03 | 6534 | 2008-11-05 | Yes |
| 773-713 | CHICGOZN02 | 9748 | — | — |
| 773-714 | CHICGOZN03 | 9329 | — | — |
| 773-715 | CHICGOZN06 | 6529 | 2002-10-16 | Yes |
| 773-716 | CHICGOZN01 | 6529 | — | Yes |
| 773-717 | CHICGOZN07 | 6333 | 2008-09-16 | Yes |
| 773-718 | CHICGOZN01 | 6333 | — | Yes |
| 773-719 | CHICGOZN01 | 6529 | — | — |
| 773-720 | CHICGOZN01 | 6333 | — | — |
| 773-721 | CHICGOZN09 | 9329 | — | — |
| 773-722 | CHICGOZN06 | 9329 | — | — |
| 773-723 | CHICGOZN07 | 9329 | — | — |
| 773-724 | CHICGOZN03 | 6333 | 2005-10-17 | Yes |
| 773-725 | CHICGOZN03 | 9329 | — | — |
| 773-726 | CHICGOZN07 | 829J | 2001-04-12 | Yes |
| 773-727 | CHICGOZN10 | 6529 | 2002-10-16 | Yes |
| 773-728 | CHICGOZN02 | 9329 | — | — |
| 773-729 | CHICGOZN07 | 829J | 2001-04-12 | Yes |
| 773-730 | CHICGOZN02 | 9329 | — | — |
| 773-731 | CHICGOZN09 | 9329 | — | — |
| 773-732 | CHICGOZN03 | 6529 | — | — |
| 773-733 | CHICGOZN06 | 829J | 2001-04-12 | Yes |
| 773-734 | CHICGOZN09 | 9329 | — | — |
| 773-735 | CHICGOZN08 | 9329 | — | — |
| 773-736 | CHICGOZN03 | 9329 | — | — |
| 773-737 | CHICGOZN08 | 9329 | — | — |
| 773-738 | CHICGOZN03 | 6529 | 2007-08-29 | Yes |
| 773-739 | CHICGOZN02 | 6529 | — | Yes |
| 773-740 | CHICGOZN02 | 224C | 2025-08-12 | Yes |
| 773-741 | CHICGOZN11 | 9329 | — | Yes |
| 773-742 | CHICGOZN03 | 6529 | 2001-11-05 | — |
| 773-743 | CHICGOZN02 | 9329 | — | — |
| 773-744 | CHICGOZN06 | 6529 | 2001-08-30 | — |
| 773-745 | CHICGOZN05 | 9329 | — | — |
| 773-746 | CHICGOZN03 | 6529 | — | Yes |
| 773-747 | CHICGOZN04 | 6529 | 2008-01-07 | Yes |
| 773-748 | CHICGOZN10 | 6795 | — | — |
| 773-749 | CHICGOZN03 | 6529 | 2007-06-19 | Yes |
| 773-750 | CHICGOZN03 | 6534 | 2001-09-13 | — |
| 773-751 | CHICGOZN02 | 7229 | — | Yes |
| 773-752 | CHICGOZN07 | 9329 | — | — |
| 773-753 | CHICGOZN07 | 9329 | — | — |
| 773-754 | CHICGOZN02 | 318J | 2006-10-24 | Yes |
| 773-755 | CHICGOZN04 | 9329 | — | — |
| 773-756 | CHICGOZN03 | 7229 | — | Yes |
| 773-757 | CHICGOZN08 | 7136 | 2001-06-28 | Yes |
| 773-758 | CHICGOZN01 | 6333 | — | — |
| 773-759 | CHICGOZN03 | 6529 | 2002-05-21 | Yes |
| 773-760 | CHICGOZN01 | 6333 | — | Yes |
| 773-761 | CHICGOZN02 | 9329 | — | — |
| 773-762 | CHICGOZN06 | 9329 | — | Yes |
| 773-763 | CHICGOZN03 | 9329 | — | — |
| 773-764 | CHICGOZN02 | 9329 | — | — |
| 773-765 | CHICGOZN02 | 7136 | — | Yes |
| 773-766 | CHICGOZN03 | 6333 | 2008-09-15 | Yes |
| 773-767 | CHICGOZN08 | 9329 | — | — |
| 773-768 | CHICGOZN09 | 9329 | — | — |
| 773-769 | CHICGOZN02 | 9329 | — | Yes |
| 773-770 | CHICGOZN04 | 829J | — | Yes |
| 773-771 | CHICGOZN01 | 6333 | — | — |
| 773-772 | CHICGOZN04 | 9329 | — | — |
| 773-773 | CHICGOZN09 | 624H | 2023-05-18 | Yes |
| 773-774 | CHICGOZN03 | 9329 | — | — |
| 773-775 | CHICGOZN03 | 9329 | — | — |
| 773-776 | CHICGOZN08 | 9329 | — | — |
| 773-777 | CHICGOZN03 | 9329 | — | — |
| 773-778 | CHICGOZN08 | 9329 | — | — |
| 773-779 | CHICGOZN10 | 9329 | — | — |
| 773-780 | CHICGOZN08 | 6529 | — | Yes |
| 773-781 | CHICGOZN01 | 9748 | 2001-04-23 | — |
| 773-782 | CHICGOZN04 | 9329 | — | Yes |
| 773-783 | CHICGOZN07 | 9329 | — | — |
| 773-784 | CHICGOZN02 | 9329 | — | — |
| 773-785 | CHICGOZN10 | 9329 | — | — |
| 773-786 | CHICGOZN05 | 829J | — | Yes |
| 773-787 | CHICGOZN10 | 7229 | — | Yes |
| 773-788 | CHICGOZN08 | 9329 | — | Yes |
| 773-789 | CHICGOZN08 | 8702 | 2007-07-12 | Yes |
| 773-790 | CHICGOZN03 | 6115 | — | Yes |
| 773-791 | CHICGOZN03 | 6534 | 2001-05-25 | — |
| 773-792 | CHICGOZN03 | 9329 | — | — |
| 773-793 | CHICGOZN03 | 6529 | — | Yes |
| 773-794 | CHICGOZN03 | 9329 | — | Yes |
| 773-795 | CHICGOZN07 | 9329 | — | — |
| 773-796 | CHICGOZN02 | 6115 | 2010-11-01 | Yes |
| 773-797 | CHICGOZN05 | 6115 | — | Yes |
| 773-798 | CHICGOZN07 | 6333 | 2008-08-21 | Yes |
| 773-799 | CHICGOZN04 | 7229 | — | 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.