NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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 906
RANGE TELECOMMUNICATIONS 30
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
— 906-206 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 BARAGA MI
— 906-222 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MARQUETTE MI
— 906-223 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MARQUETTE MI
— 906-278 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 BRIMLEY MI
— 906-279 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 BRUCECRSNG MI
— 906-303 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 CALUMET MI
— 906-304 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 CARNEY MI
— 906-305 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 CEDARVILLE MI
— 906-381 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 CHATHAM MI
— 906-406 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 DEER PARK MI
— 906-467 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 FELCH MI
— 906-469 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 HOUGHTON MI
— 906-514 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 ISHPEMING MI
— 906-597 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MANISTIQUE MI
— 906-598 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MARENISCO MI
— 906-622 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MENOMINEE MI
— 906-624 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MUNISING MI
— 906-673 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 ONTONAGON MI
— 906-713 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 REXTON MI
— 906-714 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 RUDYARD MI
— 906-731 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 SALTSTMARI MI
— 906-733 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 SENEY MI
— 906-777 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MARQUETTE MI
— 906-831 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 SMOKYLAKES MI
— 906-832 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 ST IGNACE MI
— 906-833 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 STEPHENSON MI
— 906-919 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 WATTON MI
— 906-971 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 GLADSTONE MI
— 906-972 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 FENCERIVER MI
— 906-973 not yet reported which blocks → RANGE TELECOMMUNICATIONS 6695 MARQUETTE MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.