NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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 820
FRACTEL, LLC 32
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2022-05-31 820-386 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SIMIVALLEY CA
2022-02-23 820-799 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H CAMARILLO CA
2021-09-22 820-822 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H OXNARD CA
2021-08-23 820-587 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SANBARBARA CA
2021-08-05 820-432 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NEWBURYPRK CA
2021-08-05 820-667 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H OXNARD CA
2021-08-05 820-786 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ATASCADERO CA
2021-03-12 820-336 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H GUADALUPE CA
2021-01-27 820-288 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VNTRA EAST CA
2021-01-27 820-299 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CAMARILLO CA
2021-01-13 820-356 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H POINT MUGU CA
2021-01-13 820-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SANTAMARIA CA
2021-01-11 820-348 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H OXNARD CA
2020-11-16 820-346 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ARROYOGRND CA
2020-11-04 820-842 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H OAKVIEW CA
2020-09-17 820-234 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OXNARD CA
2020-07-10 820-465 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H OXNARD CA
2020-07-10 820-732 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H VNTRA CNTL CA
2020-07-10 820-758 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SANBARBARA CA
2020-07-10 820-946 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H SANTAMARIA CA
2020-07-02 820-345 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H EL RIO CA
2019-12-17 820-529 0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PIRU CA
2019-12-05 820-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H GAVIOTA CA
2019-12-05 820-600 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H PISMOBEACH CA
2019-12-05 820-800 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CAYUCOS CA
2019-12-05 820-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BRADLEY CA
2019-01-25 820-444 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NEWBURYPRK CA
2019-01-24 820-666 0XXX2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H SNLUSOBSPO CA
2019-01-23 820-222 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CAMARILLO CA
2019-01-23 820-333 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H THOUSAOAKS CA
2019-01-22 820-777 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SANTAPAULA CA
2019-01-22 820-999 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H OXNARD 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.