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 |
|---|---|---|---|---|---|---|
| 2018-10-15 | 805-940 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS NETWORKS, LLC | 899D | OXNARD | CA |
| 2018-04-13 | 805-609 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS NETWORKS, LLC | 899D | OXNARD | CA |
| 2016-12-30 | 805-873 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | SANTAPAULA | CA |
| 2015-03-09 | 805-843 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | OXNARD | CA |
| 2014-05-28 | 805-422 | 0–9 XXXall 10 · 7 holders which blocks → | METROPCS NETWORKS, LLC | 899D | SIMIVALLEY | CA |
| 2007-03-20 | 805-336 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS NETWORKS, LLC | 899D | OXNARD | CA |
| 2001-03-01 | 805-797 | none assigned yet which blocks → | METROPCS NETWORKS, LLC | 899D | VNTRA CNTL | CA |
| — | 805-207 | none assigned yet which blocks → | METROPCS NETWORKS, LLC | 899D | VNTRA CNTL | CA |
| — | 805-258 | 0XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | METROPCS NETWORKS, LLC | 899D | VNTRA CNTL | CA |
| — | 805-432 | none assigned yet which blocks → | METROPCS NETWORKS, LLC | 899D | THOUSAOAKS | CA |
| — | 805-587 | 0XXX which blocks → | METROPCS NETWORKS, LLC | 899D | SIMIVALLEY | CA |
| — | 805-907 | 3XXX4XXX7XXX · 2 holders which blocks → | METROPCS NETWORKS, LLC | 899D | THOUSAOAKS | CA |
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.