NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 734-679 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI |
| — | 734-694 | 1XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WHITMORELK | MI |
| — | 734-718 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI |
| — | 734-723 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LOSTPNNSUL | MI |
| — | 734-735 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MONROE | MI |
| — | 734-740 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | BELLEVILLE | MI |
| — | 734-748 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI |
| — | 734-751 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI |
| — | 734-755 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MONROE | MI |
| — | 734-756 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WAYNE | MI |
| — | 734-790 | 2XXX3XXX4XXX7XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MONROE | MI |
| — | 734-807 | 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | TEMPERANCE | MI |
| — | 734-812 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LIVONIA | MI |
| — | 734-829 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | YPSILANTI | MI |
| — | 734-866 | 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | IDA | MI |
| — | 734-875 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | LOSTPNNSUL | MI |
| — | 734-876 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MAYBEE | MI |
| — | 734-890 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | WAYNE | MI |
| — | 734-893 | 2XXX4XXX5XXX7XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ROMULUS | MI |
| — | 734-904 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | ANN ARBOR | MI |
| — | 734-979 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PLYMOUTH | MI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.