NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

2 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, last 30 days — NPA 747
ONVOY, LLC - CA 2
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
2021-07-07 747-899 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H SNFN PACM CA
2021-06-11 747-309 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CANOGAPARK CA
2021-06-04 747-399 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H LACRSCENTA CA
2021-05-25 747-315 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J SNFN SNFN CA
2021-02-09 747-588 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BRBN BRBN CA
2021-02-02 747-528 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GLENDALE CA
2021-01-27 747-305 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-01-27 747-599 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H AGOURA CA
2021-01-27 747-688 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H GLENDALE CA
2021-01-27 747-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H VAN NUYS CA
2021-01-04 747-789 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NO HOLLYWD CA
2020-12-16 747-304 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VAN NUYS CA
2020-12-07 747-476 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C NO HOLLYWD CA
2020-12-04 747-388 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CANOGAPARK CA
2020-11-27 747-303 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2020-11-05 747-302 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SUNLD TJNG CA
2020-11-04 747-786 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NORTHRIDGE CA
2020-11-04 747-944 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H RESEDA CA
2020-11-04 747-955 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SNFN PACM CA
2020-11-02 747-298 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BRBN SNVY CA
2020-10-05 747-297 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E GLENDALE CA
2020-09-21 747-842 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H VAN NUYS CA
2020-09-21 747-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNFN SPLV CA
2020-08-25 747-724 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNFN GRHL CA
2020-07-10 747-377 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H VAN NUYS CA
2020-07-02 747-356 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H NORTHRIDGE CA
2020-07-02 747-977 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NO HOLLYWD CA
2020-06-30 747-295 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NO HOLLYWD CA
2020-06-16 747-307 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C GLENDALE CA
2020-06-12 747-299 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D AGOURA CA
2020-05-19 747-293 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D CANOGAPARK CA
2020-03-25 747-345 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNFN PACM CA
2020-01-13 747-336 0–9 XXXall 10 · 8 holders which blocks → FRACTEL, LLC 965H RESEDA CA
2020-01-13 747-758 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H GLENDALE CA
2019-09-25 747-289 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-08-27 747-279 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2019-08-26 747-288 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CANOGAPARK CA
2019-05-13 747-474 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BRBN BRBN CA
2019-05-13 747-732 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNFN SNFN CA
2019-05-13 747-744 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNFN GRHL CA
2019-05-13 747-877 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H VAN NUYS CA
2019-05-06 747-313 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BRBN BRBN CA
2019-05-01 747-292 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BRBN SNVY CA
2019-01-31 747-287 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 RESEDA CA
2019-01-31 747-290 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-31 747-312 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2019-01-22 747-286 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D GLENDALE CA
2018-11-20 747-285 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SUNLD TJNG CA
2018-10-04 747-284 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA CA
2018-10-04 747-301 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AGOURA 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.