NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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 |
|---|---|---|---|---|---|---|
| 2026-02-18 | 207-258 | 0XXX2XXX7XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | BATH | ME |
| 2018-11-07 | 207-301 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | ROCKLAND | ME |
| 2018-10-31 | 207-516 | 0XXX1XXX2XXX3XXX5XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | WILTON | ME |
| 2014-10-03 | 207-536 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
| 2008-10-28 | 207-370 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
| 2002-01-10 | 207-618 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
| — | 207-281 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | BIDDEFORD | ME |
| — | 207-295 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | BRUNSWICK | ME |
| — | 207-331 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
| — | 207-376 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | LEWISTON | ME |
| — | 207-424 | 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | MADISON | ME |
| — | 207-466 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | ROCKLAND | ME |
| — | 207-517 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
| — | 207-558 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
| — | 207-614 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | SKOWHEGAN | ME |
| — | 207-808 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
| — | 207-835 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ME | 382D | PORTLAND | ME |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.