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 |
|---|---|---|---|---|---|---|
| 2023-03-31 | 223-310 | 0XXX which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | MYERSTOWN | PA |
| 2022-03-28 | 223-281 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | COLUMBIA | PA |
| 2022-03-10 | 223-275 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | WRIGHTSVL | PA |
| 2022-01-21 | 223-297 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | PALMYRA | PA |
| 2021-02-10 | 223-254 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | GLEN ROCK | PA |
| 2020-02-13 | 223-233 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | SPRING GRV | PA |
| 2019-04-15 | 223-227 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | ELIZABTHTN | PA |
| 2018-08-24 | 223-209 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | MTHOLLYSPG | PA |
| 2018-06-29 | 223-204 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | ICKESBURG | PA |
| 2018-06-20 | 223-203 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - PA | 002F | AIRVILLE | PA |
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.