Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 21

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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	334-499	6XXX7XXX8XXX9XXX · 3 holders which blocks →	KNOLOGY OF THE VALLEY, INC.	0371	FREDONIA	AL
—	334-501	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	AUBURN	AL
—	334-502	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	AUBURN	AL
—	334-503	not yet reported which blocks →	BRIGHTSPEED OF ALABAMA, LLC - SOUTHERN	9788	DALEVILLE	AL
—	334-505	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	METROPCS, INC.	5562	SELMA	AL
—	334-506	not yet reported which blocks →	SPOK, INC.	6630	MONTGOMERY	AL
—	334-507	3XXX5XXX6XXX7XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	GREENSBORO	AL
—	334-510	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - AL	604E	ORRVILLE	AL
—	334-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	AL
—	334-512	not yet reported which blocks →	PAETEC ITEL, LLC	829J	WETUMPKA	AL
—	334-514	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	WETUMPKA	AL
—	334-515	5XXX which blocks →	PAETEC ITEL, LLC	829J	DALEVILLE	AL
—	334-516	not yet reported which blocks →	SPOK, INC.	6630	MONTGOMERY	AL
—	334-517	0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	MONTGOMERY	AL
—	334-519	not yet reported which blocks →	SPOK, INC.	6630	MONTGOMERY	AL
—	334-520	0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	SOUTHERN COMMUNICATIONS SERVICES, INC.	6744	PHENIXCITY	AL
—	334-521	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	AUBURN	AL
—	334-522	not yet reported which blocks →	KNOLOGY TOTAL COMMUNICATIONS, INC.	0295	GORDON	AL
—	334-524	not yet reported which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	OPELIKA	AL
—	334-526	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	SELMA	AL
—	334-527	not yet reported which blocks →	BRIGHTSPEED OF ALABAMA, LLC - SOUTHERN	9788	BRANTLEY	AL
—	334-528	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	OPELIKA	AL
—	334-529	not yet reported which blocks →	UNION SPRINGS TEL. CO., INC.	0322	MIDWAY	AL
—	334-531	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	MONTGOMERY	AL
—	334-532	not yet reported which blocks →	PAETEC ITEL, LLC	829J	MONTGOMERY	AL
—	334-534	not yet reported which blocks →	SOUTHERN COMMUNICATIONS SERVICES, INC.	6744	PHENIXCITY	AL
—	334-537	not yet reported which blocks →	MON-CRE TEL. COOP., INC.	0305	LAPINE	AL
—	334-538	none assigned yet which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	MONTGOMERY	AL
—	334-539	0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	AUBURN	AL
—	334-541	not yet reported which blocks →	WINDSTREAM ALABAMA, INC.	0302	ECLECTIC	AL
—	334-542	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	RED LEVEL	AL
—	334-545	1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	OZARK	AL
—	334-546	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MONTGOMERY	AL
—	334-548	not yet reported which blocks →	HAYNEVILLE TEL. CO., INC.	0299	HAYNEVILLE	AL
—	334-549	7XXX8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MONTGOMERY	AL
—	334-551	not yet reported which blocks →	PAETEC ITEL, LLC	829J	MONTGOMERY	AL
—	334-552	3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	TUSKEGEE	AL
—	334-553	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	SELMA	AL
—	334-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	AL
—	334-556	not yet reported which blocks →	PAETEC ITEL, LLC	829J	MIDLAND CY	AL
—	334-558	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	PAETEC ITEL, LLC	829J	MONTGOMERY	AL
—	334-560	1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	SOUTHERN COMMUNICATIONS SERVICES, INC.	6744	PHENIXCITY	AL
—	334-561	4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	METROPCS, INC.	5562	MONTGOMERY	AL
—	334-562	not yet reported which blocks →	MON-CRE TEL. COOP., INC.	0305	RAMER	AL
—	334-563	not yet reported which blocks →	HAYNEVILLE TEL. CO., INC.	0299	GORDONSVL	AL
—	334-565	0XXX1XXX2XXX · 3 holders which blocks →	BRIGHTSPEED OF ALABAMA, LLC - SOUTHERN	9788	KINSTON	AL
—	334-566	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	TROY	AL
—	334-567	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	WETUMPKA	AL
—	334-568	0–9 XXXall 10 · 7 holders which blocks →	AT&T ENTERPRISES, LLC	516C	PRATTVILLE	AL
—	334-569	4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	HOLTVILLE	AL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.