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 |
|---|---|---|---|---|---|---|
| 2018-05-17 | 805-810 | 0XXX9XXX which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SNLUSOBSPO | CA |
| 2016-09-20 | 805-401 | 0–9 XXXall 10 · 2 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | OXNARD | CA |
| 2015-10-02 | 805-941 | 0–9 XXXall 10 · 4 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | VNTRA EAST | CA |
| 2015-09-25 | 805-513 | 0–9 XXXall 10 · 2 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | OXNARD | CA |
| 2012-04-13 | 805-251 | 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SIMIVALLEY | CA |
| 2012-04-13 | 805-327 | 0–9 XXXall 10 · 3 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SIMIVALLEY | CA |
| 2012-04-13 | 805-537 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SIMIVALLEY | CA |
| 2011-05-03 | 805-364 | 0–9 XXXall 10 · 2 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | SANBARBARA | CA |
| 2009-01-05 | 805-309 | 0–9 XXXall 10 · 2 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | THOUSAOAKS | CA |
| — | 805-430 | 3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | LOMPOC | CA |
| — | 805-912 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | BRADLEY | CA |
| — | 805-917 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | THOUSAOAKS | CA |
| — | 805-936 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | PISMOBEACH | 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.