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 |
|---|---|---|---|---|---|---|
| — | 605-243 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | NEWHOLLAND | SD |
| — | 605-245 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | FTTHOMPSON | SD |
| — | 605-249 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | WHITE LAKE | SD |
| — | 605-293 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | GANNVALLEY | SD |
| — | 605-337 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | PLATTE | SD |
| — | 605-726 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | ACADEMY | SD |
| — | 605-732 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | STICKNEY | SD |
| — | 605-778 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | KIMBALL | SD |
| — | 605-779 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | DELMONT | SD |
| — | 605-894 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | PUKWANA | SD |
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.