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 956

8X8, INC. 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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2013-04-16	956-410	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	LOSFRESNOS	TX
2013-03-12	956-406	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	HARLINGEN	TX
2012-11-26	956-360	0–9 XXXwhole prefix which blocks →	STPCS JOINT VENTURE, LLC	4290	MISSION	TX
2012-10-29	956-269	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	LAREDO	TX
2012-09-27	956-404	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	BROWNSVL	TX
2012-09-27	956-407	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2012-09-26	956-252	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EDINBURG	TX
2012-07-20	956-215	0–9 XXXall 10 · 3 holders which blocks →	TRANSTELCO, INC. - TX	679E	MCALLEN	TX
2011-09-23	956-396	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	FALCON HTS	TX
2011-08-24	956-633	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	VTX COMMUNICATIONS, LLC	776A	SANTA ROSA	TX
2011-08-18	956-349	not yet reported which blocks →	VTX COMMUNICATIONS, LLC	776A	LYFORD	TX
2011-07-28	956-250	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EDINBURG	TX
2011-07-20	956-786	0–9 XXXall 10 · 2 holders which blocks →	SOUTHWESTERN BELL	9533	LAREDO	TX
2011-05-27	956-257	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	RIGRANDECY	TX
2011-04-25	956-998	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WESLACO	TX
2011-03-25	956-340	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MCALLEN	TX
2011-03-25	956-616	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MCALLEN	TX
2011-03-14	956-529	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MISSION	TX
2011-03-08	956-685	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PHARR	TX
2011-02-23	956-267	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LAREDO	TX
2011-02-22	956-261	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WESLACO	TX
2011-02-22	956-295	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2011-01-31	956-336	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2011-01-03	956-290	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LAREDO	TX
2010-12-29	956-270	0–9 XXXall 10 · 3 holders which blocks →	STPCS JOINT VENTURE, LLC	4290	EDINBURG	TX
2010-12-29	956-329	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	EDINBURG	TX
2010-12-29	956-355	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	WESLACO	TX
2010-12-29	956-402	0–9 XXXall 10 · 4 holders which blocks →	STPCS JOINT VENTURE, LLC	4290	PHARR	TX
2010-12-23	956-590	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2010-12-02	956-599	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MISSION	TX
2010-11-24	956-273	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	LAREDO	TX
2010-11-24	956-800	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	MCALLEN	TX
2010-11-10	956-600	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MISSION	TX
2010-10-13	956-699	not yet reported which blocks →	VTX COMMUNICATIONS, LLC	776A	RAYMONDVL	TX
2010-09-17	956-274	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	DONNA	TX
2010-06-22	956-322	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MCALLEN	TX
2010-04-29	956-307	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LAREDO	TX
2010-04-05	956-665	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	EDINBURG	TX
2010-03-17	956-332	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WESLACO	TX
2010-01-12	956-999	0–9 XXXall 10 · 4 holders which blocks →	FOREMOST TELECOMMUNICATIONS CORPORATION - TX	319D	LAREDO	TX
2010-01-11	956-294	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	MERCEDES	TX
2009-11-30	956-280	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2009-11-16	956-317	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	RIGRANDECY	TX
2009-11-04	956-462	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	LAREDO	TX
2009-05-13	956-363	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WESLACO	TX
2009-04-16	956-293	0–9 XXXwhole prefix which blocks →	STPCS JOINT VENTURE, LLC	4290	BROWNSVL	TX
2008-11-05	956-362	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	MCALLEN	TX
2008-10-09	956-320	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	HARLINGEN	TX
2008-10-06	956-313	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MCALLEN	TX
2008-10-06	956-414	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MCALLEN	TX

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.