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 |
|---|---|---|---|---|---|---|
| 2006-05-15 | 320-722 | 2XXX7XXX8XXX · 3 holders which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | GRANITEFLS | MN |
| — | 320-238 | 1XXX4XXX5XXX7XXX8XXX9XXX which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | PLATO | MN |
| — | 320-275 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | DASSEL | MN |
| — | 320-286 | 1XXX8XXX · 2 holders which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | COKATO | MN |
| — | 320-327 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | SILVERLAKE | MN |
| — | 320-328 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | BROWNTON | MN |
| — | 320-395 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | LESTERPRRI | MN |
| — | 320-543 | 5XXX6XXX · 2 holders which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | HOWARDLAKE | MN |
| — | 320-554 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | VILLARD | MN |
| — | 320-562 | 5XXX7XXX9XXX · 3 holders which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | STEWART | MN |
| — | 320-564 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | GRANITEFLS | MN |
| — | 320-594 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | BROWERVL | MN |
| — | 320-732 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | LONGPRAIRI | MN |
| — | 320-759 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | ALEXANDRIA | MN |
| — | 320-762 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | ALEXANDRIA | MN |
| — | 320-763 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | ALEXANDRIA | MN |
| — | 320-833 | 3XXX6XXX8XXX · 3 holders which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | BUFFALO LK | MN |
| — | 320-842 | 1XXX which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | BENSON | MN |
| — | 320-843 | 7XXX8XXX · 2 holders which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | BENSON | MN |
| — | 320-846 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | ALEXANDRIA | MN |
| — | 320-852 | 2XXX4XXX5XXX · 2 holders which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | CARLOS | MN |
| — | 320-857 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | GROVE CITY | MN |
| — | 320-864 | 9XXX which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | GLENCOE | MN |
| — | 320-886 | not yet reported which blocks → | CENTURYLINK OF MINNESOTA, INC. | 1456 | HOLMESCITY | MN |
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.