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 256
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 180
NEW CINGULAR WIRELESS PCS, LLC - GA 114
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 84
PAETEC ITEL, LLC 58
POWERTEL BIRMINGHAM LICENSES, INC. 49
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
— 256-683 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-684 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-685 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 TOWN CREEK AL
— 256-691 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J ATTALLA AL
— 256-694 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 HUNTSVILLE AL
— 256-697 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FORT PAYNE AL
— 256-700 not yet reported which blocks → AL
— 256-703 1XXX3XXX7XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F BRIDGEPORT AL
— 256-704 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 HUNTSVILLE AL
— 256-705 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 HUNTSVILLE AL
— 256-707 not yet reported which blocks → SPOK, INC. 6630 HUNTSVILLE AL
— 256-708 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
— 256-709 6XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
— 256-710 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FLORENCE AL
— 256-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AL
— 256-714 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
— 256-716 0XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-717 0XXX1XXX2XXX · 3 holders which blocks → FARMERS TELECOMMUNICATIONS COOPERATIVE, INC. 0290 RAINSVILLE AL
— 256-718 7XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FLORENCE AL
— 256-720 not yet reported which blocks → SPOK, INC. 6630 HUNTSVILLE AL
— 256-721 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-722 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-723 not yet reported which blocks → NEW HOPE TEL. COOP. 0308 NEW HOPE AL
— 256-724 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J MADISON AL
— 256-725 not yet reported which blocks → NEW HOPE TEL. COOP. 0308 OWNSCRSRDS AL
— 256-726 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-728 not yet reported which blocks → NEW HOPE TEL. COOP. 0308 GRANT AL
— 256-729 5XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ATHENS AL
— 256-730 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - AL 7451 HUNTSVILLE AL
— 256-732 not yet reported which blocks → ARDMORE TEL. CO., INC. 0280 ELKMONT AL
— 256-734 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CULLMAN AL
— 256-736 0XXX7XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CULLMAN AL
— 256-737 4XXX6XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CULLMAN AL
— 256-738 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GUNTERSVL AL
— 256-739 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CULLMAN AL
— 256-740 3XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FLORENCE AL
— 256-741 0XXX2XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ANNISTON AL
— 256-745 3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MUNFORD AL
— 256-746 3XXX6XXX7XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
— 256-747 5XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CULLMAN AL
— 256-748 0XXX1XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 9789 LECTA AL
— 256-749 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 ALEXANDRCY AL
— 256-751 6XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HARTSELLE AL
— 256-753 not yet reported which blocks → BRINDLEE MOUNTAIN TELEPHONE LLC 0283 UNIONGROVE AL
— 256-754 3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J HARTSELLE AL
— 256-756 4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GURLEY AL
— 256-757 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 KILLEN AL
— 256-758 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HARTSELLE AL
— 256-759 6XXX8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 HUNTSVILLE AL
— 256-760 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FLORENCE AL

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.