NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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 483
INTRADO COMMUNICATIONS LLC 1
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2026-09-15 483-500 5XXX which blocks → INTRADO COMMUNICATIONS LLC 807C PHENIXCITY AL
2026-08-24 483-222 1XXX2XXX which blocks → WIDE VOICE, LLC - AL 764H WETUMPKA AL
2026-08-17 483-587 8XXX which blocks → AHOI LLC 883K SELMA AL
2026-08-17 483-900 9XXX which blocks → INTRADO COMMUNICATIONS LLC 807C MONTGOMERY AL
2026-08-13 483-997 4XXX9XXX which blocks → ONVOY, LLC - AL 604E MONTGOMERY AL
2026-08-13 483-998 4XXX9XXX which blocks → ONVOY, LLC - AL 604E MONTGOMERY AL
2026-08-13 483-999 1XXX9XXX which blocks → WIDE VOICE, LLC - AL 764H MONTGOMERY AL
2026-08-12 483-444 4XXX which blocks → OPENTACT INC. 824J AUBURN AL
2026-08-07 483-333 2XXX3XXX4XXX which blocks → AHOI LLC 883K MONTGOMERY AL
2026-08-07 483-777 7XXX which blocks → AHOI LLC 883K AUBURN AL
2026-08-07 483-888 8XXX which blocks → OPENTACT INC. 824J MONTGOMERY AL
— 483-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST AL
— 483-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-700 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-950 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-958 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-959 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 483-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.