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
2021-03-01 256-869 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2021-01-22 256-908 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FRUITHURST AL
2021-01-13 256-967 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E TOWN CREEK AL
2021-01-12 256-897 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - AL 604E COURTLAND AL
2021-01-12 256-957 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E DECATUR AL
2021-01-11 256-884 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - AL 604E MENTONE AL
2021-01-08 256-863 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E HUNTSVILLE AL
2020-12-31 256-873 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - AL 604E ATTALLA AL
2020-12-28 256-862 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E ANNISTON AL
2020-12-28 256-865 0XXX1XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → ONVOY, LLC - AL 604E ASHLAND AL
2020-12-28 256-871 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E ATHENS AL
2020-12-21 256-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E HUNTSVILLE AL
2020-11-23 256-838 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2020-11-18 256-821 not yet reported which blocks → SHELCOMM 0051 DECATUR AL
2020-11-16 256-823 not yet reported which blocks → SHELCOMM 0051 HUNTSVILLE AL
2020-09-11 256-816 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2020-09-04 256-819 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 478J HUNTSVILLE AL
2020-08-21 256-807 0XXX1XXX2XXX3XXX5XXX6XXX7XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HEFLIN AL
2020-08-21 256-809 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HUNTSVILLE AL
2020-07-22 256-806 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J HUNTSVILLE AL
2020-05-28 256-798 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2020-03-06 256-795 0–9 XXXall 10 · 6 holders which blocks → AT&T - LOCAL 7421 ATHENS AL
2020-02-19 256-793 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CULLMAN AL
2020-02-10 256-696 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J HUNTSVILLE AL
2020-02-10 256-791 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DECATUR AL
2019-12-02 256-699 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H LEESBURG AL
2019-12-02 256-788 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H HUNTSVILLE AL
2019-12-02 256-877 0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H SAND ROCK AL
2019-12-02 256-944 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H JACKSONVL AL
2019-12-02 256-946 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H WOODLAND AL
2019-12-02 256-977 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H GUNTERSVL AL
2019-08-08 256-780 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - AL 604E MRNSCRSRDS AL
2019-08-08 256-870 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E MADISON AL
2019-06-18 256-210 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F HUNTSVILLE AL
2019-03-27 256-833 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CORETEL ALABAMA, INC. - AL 476F BRYANT AL
2019-02-21 256-900 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM INC. 145J GADSDEN AL
2019-02-19 256-817 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HUNTSVILLE AL
2018-09-25 256-692 0–9 XXXall 10 · 6 holders which blocks → TELNYX LLC 073H HUNTSVILLE AL
2018-08-29 256-719 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E MOULTON AL
2018-06-06 256-742 0XXX1XXX2XXX6XXX8XXX9XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K ELKMONT AL
2018-04-10 256-688 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → WINDSTREAM ALABAMA, INC. 0302 CAMP HILL AL
2018-03-15 256-629 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FLORENCE AL
2018-03-09 256-678 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL 7469 HUNTSVILLE AL
2018-01-31 256-681 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MORGANCITY AL
2018-01-31 256-752 0XXX1XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K UNIONGROVE AL
2017-12-20 256-421 0XXX1XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GRANT AL
2017-07-11 256-376 0–9 XXXall 10 · 3 holders which blocks → IDT AMERICA CORP. - AL 058J RED BAY AL
2017-07-11 256-387 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HARTSELLE AL
2017-06-20 256-285 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - AL 476H HUNTSVILLE AL
2017-04-10 256-583 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 HUNTSVILLE 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.