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 |
|---|---|---|---|---|---|---|
| — | 701-249 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | ESMOND | ND |
| — | 701-262 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | TOLNA | ND |
| — | 701-292 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | STARKWETHR | ND |
| — | 701-294 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | WARWICK | ND |
| — | 701-296 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | PEKIN | ND |
| — | 701-322 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | MCVILLE | ND |
| — | 701-324 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | HARVEY | ND |
| — | 701-393 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | PENN | ND |
| — | 701-395 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | WEBSTER | ND |
| — | 701-398 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | CRARY | ND |
| — | 701-438 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | MADDOCK | ND |
| — | 701-465 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | DRAKE | ND |
| — | 701-466 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | LEEDS | ND |
| — | 701-473 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | MINNEWAKAN | ND |
| — | 701-542 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | BALTA | ND |
| — | 701-547 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | FESSENDEN | ND |
| — | 701-583 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | KNOX | ND |
| — | 701-592 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | LEEDS | ND |
| — | 701-662 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | DEVILSLAKE | ND |
| — | 701-665 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | DEVILSLAKE | ND |
| — | 701-766 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | FORTTOTTEN | ND |
| — | 701-776 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | RUGBY | ND |
| — | 701-798 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | OBERON | ND |
| — | 701-868 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | HAMPDEN | ND |
| — | 701-947 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | NEW ROCKFD | ND |
| — | 701-968 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | CANDO | ND |
| — | 701-996 | not yet reported which blocks → | NORTH DAKOTA TELEPHONE CO. | 1447 | SHEYENNE | ND |
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.