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 |
|---|---|---|---|---|---|---|
| 2014-08-11 | 208-614 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | CALDWELL | ID |
| 2011-04-21 | 208-719 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | HAYDENLAKE | ID |
| 2007-10-17 | 208-473 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | BOISE | ID |
| 2006-06-19 | 208-770 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | COERDALENE | ID |
| 2002-04-04 | 208-649 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | CALDWELL | ID |
| — | 208-350 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | BOISE | ID |
| — | 208-472 | not yet reported which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | BOISE | ID |
| — | 208-489 | not yet reported which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | BOISE | ID |
| — | 208-493 | not yet reported which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | BOISE | ID |
| — | 208-498 | not yet reported which blocks → | LEVEL 3 TELECOM OF IDAHO, LLC - ID | 7511 | NAMPA | ID |
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.