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 |
|---|---|---|---|---|---|---|
| — | 248-533 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | NORTHVILLE | MI |
| — | 248-535 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-561 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | TROY | MI |
| — | 248-563 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-568 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-660 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | HOLLY | MI |
| — | 248-664 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | MILFDWH LK | MI |
| — | 248-672 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-709 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | TROY | MI |
| — | 248-762 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-763 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | SOUTHFIELD | MI |
| — | 248-765 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | TROY | MI |
| — | 248-770 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-798 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | SOUTHFIELD | MI |
| — | 248-804 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-820 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | HOLLY | MI |
| — | 248-891 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | PONTIAC | MI |
| — | 248-912 | 2XXX4XXX5XXX7XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | NORTHVILLE | MI |
| — | 248-914 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | SOUTHFIELD | MI |
| — | 248-915 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | SOUTHFIELD | MI |
| — | 248-921 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | NORTHVILLE | MI |
| — | 248-996 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | SOUTHFIELD | 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.