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 442
FRACTEL, LLC 51
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
2022-02-22 442-533 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H VICTORVL CA
2022-02-22 442-544 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H ESCONDIDO CA
2022-02-22 442-822 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H INDIO CA
2022-02-22 442-855 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VTVL APVY CA
2022-01-26 442-522 0XXX2XXX5XXX · 3 holders which blocks → FRACTEL, LLC 965H PARKER DAM CA
2021-10-25 442-944 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VISTA CA
2021-09-21 442-566 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H VALLEY CTR CA
2021-09-21 442-567 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H ESCONDIDO CA
2021-09-21 442-867 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BARSTOW CA
2021-07-13 442-866 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H BRAWLEY CA
2021-07-13 442-977 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OCSD CRLS CA
2021-04-23 442-466 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H OCSD PDTN CA
2021-04-23 442-933 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIO CA
2021-04-22 442-433 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BRAWLEY CA
2021-04-22 442-755 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VICTORVL CA
2021-03-10 442-377 0XXX1XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H BAKER CA
2021-03-10 442-789 0XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H WELDON CA
2021-03-05 442-386 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H VICTORVL CA
2021-03-01 442-799 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TWNTYNPLMS CA
2020-12-30 442-667 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → FRACTEL, LLC 965H INYOKERN CA
2020-12-21 442-899 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H WARNER SPG CA
2020-11-09 442-699 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H TRONA CA
2020-11-09 442-833 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H JOSHUATREE CA
2020-11-09 442-955 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VICTORVL CA
2020-11-06 442-744 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H BRIDGEPORT CA
2020-11-06 442-966 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H RIDGECREST CA
2020-09-17 442-346 0XXX2XXX4XXX5XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H BENTON CA
2020-09-17 442-388 0XXX1XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H DESERT CTR CA
2020-09-17 442-399 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H EL MIRAGE CA
2020-09-17 442-432 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CALEXICO CA
2020-09-17 442-488 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ESCONDIDO CA
2020-09-17 442-499 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FORT IRWIN CA
2020-09-17 442-588 0XXX1XXX5XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H HOMESTDVLY CA
2020-09-17 442-599 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIO CA
2020-09-17 442-786 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BLYTHE CA
2020-07-10 442-688 0XXX4XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H PALO VERDE CA
2020-06-05 442-732 0XXX1XXX2XXX5XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H SANDY VLLY CA
2020-05-29 442-356 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H VTVL HSPR CA
2020-05-29 442-422 1XXX2XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H SHOSHONE CA
2020-05-29 442-477 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H RIDGECREST CA
2020-05-29 442-577 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H PAUMA VLY CA
2020-05-29 442-677 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H PALMDESERT CA
2020-05-29 442-758 0XXX3XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H OLANCHA CA
2020-05-29 442-766 0XXX2XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → FRACTEL, LLC 965H INYOKERN CA
2020-05-29 442-788 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DSERTHTSPG CA
2020-05-29 442-842 1XXX4XXX5XXX · 3 holders which blocks → FRACTEL, LLC 965H INDEPNDNCE CA
2020-05-29 442-877 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ESCONDIDO CA
2020-05-29 442-946 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H EARP LSLK CA
2020-04-23 442-529 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H INDIO CA
2019-03-20 442-336 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H VTVL APVY 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.