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 |
|---|---|---|---|---|---|---|
| 2023-10-27 | 272-350 | 0XXX1XXX2XXX4XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CNYNGHDRMS | PA |
| 2023-10-27 | 272-352 | 0XXX3XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HALLSTEAD | PA |
| 2023-10-27 | 272-354 | 0XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | HUNTIGTNML | PA |
| 2023-10-27 | 272-355 | 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | POCONOLAKE | PA |
| 2023-10-27 | 272-357 | 0XXX1XXX2XXX7XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SAYLORSBG | PA |
| 2023-10-27 | 272-358 | 0XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | SUSQUHANNA | PA |
| 2023-07-28 | 272-272 | 0XXX1XXX2XXX3XXX4XXX7XXX · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | TROUT RUN | PA |
| 2023-07-28 | 272-702 | 0XXX2XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | MONTGOMERY | PA |
| 2023-07-28 | 272-720 | 0XXX1XXX2XXX3XXX9XXX · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | WEATHERLY | PA |
| 2021-06-18 | 272-288 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CRESCO | PA |
| 2021-06-18 | 272-290 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | DANVILLE | PA |
| 2021-06-18 | 272-302 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | ELYSBURG | PA |
| 2021-06-18 | 272-373 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | FREELAND | PA |
| 2021-06-18 | 272-377 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | FRIEDENSBG | PA |
| 2021-05-24 | 272-299 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | LITTLE MDW | PA |
| 2021-04-21 | 272-263 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | AUBURN | PA |
| 2021-04-21 | 272-292 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BEAVER SPG | PA |
| 2021-04-21 | 272-372 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BROOKSIDE | PA |
| 2021-03-30 | 272-344 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SHOHOLA | PA |
| 2021-01-22 | 272-722 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CLARKSSMMT | PA |
| 2018-06-20 | 272-270 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BLOOMSBURG | 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.