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.
Most active assignees, all time — NPA 208
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2020-10-21 | 208-563 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOISE | ID |
| 2018-09-18 | 208-603 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | SANDPOINT | ID |
| 2018-05-25 | 208-804 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAPWAI | ID |
| 2016-08-03 | 208-813 | 0–9 XXXall 10 · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | BOISE | ID |
| 2015-01-21 | 208-488 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | BOISE | ID |
| 2013-12-12 | 208-494 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GRANGEVL | ID |
| 2013-02-28 | 208-497 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | IDAHOFALLS | ID |
| 2012-11-15 | 208-216 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BAYVIEW | ID |
| 2011-06-03 | 208-901 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | BOISE | ID |
| 2007-03-28 | 208-546 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | NAMPA | ID |
| 2004-03-26 | 208-272 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | BOISE | ID |
| 2003-11-13 | 208-277 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | COERDALENE | ID |
| 2002-11-06 | 208-561 | 0–9 XXXall 10 · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | BAYVIEW | ID |
| 2002-08-15 | 208-621 | none assigned yet which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAPWAI | ID |
| 2001-08-23 | 208-712 | 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | RATHDRUM | ID |
| 2001-08-13 | 208-262 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | POST FALLS | ID |
| — | 208-209 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | HAYDENLAKE | ID |
| — | 208-292 | 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | COERDALENE | ID |
| — | 208-298 | 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEWISTON | ID |
| — | 208-415 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | COERDALENE | ID |
| — | 208-416 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | COERDALENE | ID |
| — | 208-446 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COERDALENE | ID |
| — | 208-618 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | POST FALLS | ID |
| — | 208-619 | 1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | POST FALLS | ID |
| — | 208-717 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEWISTON | ID |
| — | 208-748 | 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEWISTON | ID |
| — | 208-763 | 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ID | 678B | COERDALENE | ID |
| — | 208-848 | 3XXX4XXX5XXX6XXX · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEWISTON | 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.