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 |
|---|---|---|---|---|---|---|
| 2021-09-20 | 352-936 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS NETWORKS, LLC | 899D | CLERMONT | FL |
| 2012-12-17 | 352-708 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | CLERMONT | FL |
| 2009-05-20 | 352-301 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS NETWORKS, LLC | 899D | GAINESVL | FL |
| 2006-12-29 | 352-321 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | LEESBURG | FL |
| 2006-05-24 | 352-872 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | GAINESVL | FL |
| 2005-04-11 | 352-792 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS NETWORKS, LLC | 899D | GAINESVL | FL |
| 2003-10-24 | 352-558 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS NETWORKS, LLC | 899D | WILLISTON | FL |
| — | 352-348 | 0XXX2XXX which blocks → | METROPCS NETWORKS, LLC | 899D | LEESBURG | FL |
| — | 352-396 | 0XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → | METROPCS NETWORKS, LLC | 899D | LEESBURG | FL |
| — | 352-682 | 0XXX2XXX · 2 holders which blocks → | METROPCS NETWORKS, LLC | 899D | GAINESVL | FL |
| — | 352-745 | 3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | GAINESVL | FL |
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.