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 386
WINDSTREAM FLORIDA, INC. 34
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
2011-11-30 386-662 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 FLORAHOME FL
2011-11-15 386-217 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 LAKEBUTLER FL
2011-11-15 386-224 0–9 XXXall 10 · 3 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 INTERLACHN FL
2011-11-15 386-300 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 FORT WHITE FL
2011-11-10 386-201 9XXX which blocks → WINDSTREAM FLORIDA, INC. 0336 HIGH SPG FL
2011-11-10 386-203 9XXX which blocks → WINDSTREAM FLORIDA, INC. 0336 CRESCENTCY FL
2011-06-30 386-339 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL
2001-04-25 386-638 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 JASPER FL
— 386-208 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL
— 386-294 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 MAYO FL
— 386-303 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 WHITE SPG FL
— 386-330 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL
— 386-362 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL
— 386-364 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL
— 386-397 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 WHITE SPG FL
— 386-418 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 ALACHUA FL
— 386-431 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 RAIFORD FL
— 386-454 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 HIGH SPG FL
— 386-462 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 ALACHUA FL
— 386-496 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LAKEBUTLER FL
— 386-497 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 FORT WHITE FL
— 386-647 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LIVE OAK FL
— 386-658 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 DOWLING PK FL
— 386-659 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 FLORAHOME FL
— 386-661 3XXX8XXX · 2 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 FLORAHOME FL
— 386-684 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 INTERLACHN FL
— 386-698 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 CRESCENTCY FL
— 386-776 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 LURAVILLE FL
— 386-792 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 JASPER FL
— 386-842 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 FLSHSBYRNH FL
— 386-884 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 WHITE SPG FL
— 386-935 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 BRANFORD FL
— 386-938 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 JENNINGS FL
— 386-963 not yet reported which blocks → WINDSTREAM FLORIDA, INC. 0336 WELLBORN FL

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.