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 |
|---|---|---|---|---|---|---|
| 2017-08-25 | 850-285 | 0–9 XXXall 10 · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | PENSACOLA | FL |
| 2011-08-09 | 850-369 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | GREENWOOD | FL |
| 2008-05-01 | 850-640 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | PANAMACITY | FL |
| 2008-05-01 | 850-765 | 0–9 XXXwhole prefix which blocks → | COMCAST IP PHONE, LLC | 318J | TALLAHASSE | FL |
| 2007-02-26 | 850-481 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | PANAMACITY | FL |
| 2006-10-18 | 850-713 | 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | ST MARKS | FL |
| 2006-10-18 | 850-817 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | ST MARKS | FL |
| 2006-10-05 | 850-727 | 0–9 XXXall 10 · 2 holders which blocks → | COMCAST IP PHONE, LLC | 318J | TALLAHASSE | FL |
| — | 850-495 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | PENSACOLA | FL |
| — | 850-607 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | PENSACOLA | FL |
| — | 850-608 | 0–9 XXXall 10 · 4 holders which blocks → | COMCAST IP PHONE, LLC | 318J | SANROSABCH | FL |
| — | 850-613 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | SHALIMAR | FL |
| — | 850-780 | 0–9 XXXall 10 · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | CANTONMENT | FL |
| — | 850-791 | 0–9 XXXall 10 · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | PENSACOLA | FL |
| — | 850-842 | 0–9 XXXall 10 · 3 holders which blocks → | COMCAST IP PHONE, LLC | 318J | DESTIN | FL |
| — | 850-880 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → | COMCAST IP PHONE, LLC | 318J | FREEPORT | FL |
| — | 850-908 | 0–9 XXXwhole prefix which blocks → | COMCAST IP PHONE, LLC | 318J | PENSACOLA | 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.