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 |
|---|---|---|---|---|---|---|
| 2019-05-01 | 740-752 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | GLENFORD | OH |
| 2015-05-29 | 740-952 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | UHRICHSVL | OH |
| 2012-06-20 | 740-715 | 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | JUNCTIONCY | OH |
| 2012-06-20 | 740-805 | 0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | GLOUSTER | OH |
| 2012-06-20 | 740-901 | 0–9 XXXall 10 · 8 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | LANCASTER | OH |
| 2012-05-23 | 740-760 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | MARIETTA | OH |
| 2011-09-28 | 740-520 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | ADAMSVILLE | OH |
| 2011-09-26 | 740-300 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | NELSONVL | OH |
| 2011-09-07 | 740-292 | 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | STOCKPORT | OH |
| 2002-04-23 | 740-212 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | GLENFORD | OH |
| 2002-02-19 | 740-239 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | WSNGTNCTHS | OH |
| — | 740-302 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | IRONTON | OH |
| — | 740-738 | 0–9 XXXall 10 · 8 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | MARTISFRRY | OH |
| — | 740-908 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | LONDON | OH |
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.