NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 334
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
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
2021-03-25 334-895 0–9 XXXall 10 · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MONTGOMERY AL
2021-01-13 334-848 0XXX1XXX2XXX4XXX8XXX · 4 holders which blocks → ONVOY, LLC - AL 604E ORRVILLE AL
2021-01-13 334-928 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - AL 604E THOMASVL AL
2021-01-12 334-772 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F NOTASULGA AL
2021-01-11 334-776 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - AL 604E GEORGIANA AL
2021-01-11 334-815 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - AL 604E SLOCOMB AL
2021-01-11 334-825 0XXX3XXX4XXX · 2 holders which blocks → ONVOY, LLC - AL 604E LOUISVILLE AL
2020-12-23 334-771 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLC - AL 604E FORESTHOME AL
2020-12-22 334-993 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H MONTGOMERY AL
2020-12-21 334-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E MONTGOMERY AL
2020-12-15 334-851 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E MONTGOMERY AL
2020-12-14 334-769 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DOTHAN AL
2020-09-25 334-778 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E DOTHAN AL
2020-09-25 334-934 0XXX3XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - AL 604E GOSHEN AL
2020-08-28 334-752 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 AUBURN AL
2020-07-30 334-751 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FT DEPOSIT AL
2020-07-29 334-686 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DOTHAN AL
2020-07-13 334-822 1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H BRANTLEY AL
2020-07-13 334-829 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OAKLAND AL
2020-07-13 334-867 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GENEVA AL
2020-07-13 334-966 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H HARTFORD AL
2020-07-09 334-746 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J MONTGOMERY AL
2020-06-30 334-729 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F PINE HILL AL
2020-06-02 334-955 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HOLTVILLE AL
2020-05-28 334-713 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DOTHAN AL
2020-02-25 334-579 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DOTHAN AL
2020-01-10 334-766 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H DALEVILLE AL
2020-01-10 334-788 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PRATTVILLE AL
2020-01-10 334-842 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → FRACTEL, LLC 965H BRUNDIDGE AL
2020-01-10 334-922 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MONTGOMERY AL
2020-01-10 334-946 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CLAYTON AL
2019-11-19 334-679 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELNYX LLC 073H MONTGOMERY AL
2019-10-15 334-810 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - AL 604E ALBERTA AL
2019-08-08 334-780 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E AUBURN AL
2019-06-17 334-675 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 GREENSBORO AL
2019-05-09 334-659 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MONTGOMERY AL
2019-04-09 334-653 1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 COTTONWOOD AL
2019-01-10 334-643 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LINDEN AL
2018-11-06 334-592 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PHENIXCITY AL
2018-09-11 334-789 0XXX1XXX2XXX3XXX5XXX · 5 holders which blocks → TROY CABLEVISION, INC. - AL 208D ASHFORD AL
2018-08-29 334-326 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AL 604E UNIONTOWN AL
2018-08-29 334-666 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - AL 604E WETUMPKA AL
2018-03-13 334-604 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D MONTGOMERY AL
2017-12-01 334-373 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 VREDENBG AL
2017-12-01 334-594 0XXX2XXX3XXX4XXX7XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 CATHERINE AL
2017-08-16 334-359 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → MCC TELEPHONY LLC 593K WING AL
2017-08-10 334-888 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AL 604E CLAYTON AL
2017-07-20 334-800 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AL 604E GREENSBORO AL
2017-07-20 334-999 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AL 604E HOLTVILLE AL
2017-07-17 334-900 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AL 604E LINDEN AL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.