Recent prefix assignments

1 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, last 30 days — NPA 361

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
—	361-739	none assigned yet which blocks →	STPCS JOINT VENTURE, LLC	4290	C CHRISTI	TX
—	361-741	0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	YOAKUM	TX
—	361-744	not yet reported which blocks →	SPOK, INC.	6630	C CHRISTI	TX
—	361-745	not yet reported which blocks →	SPOK, INC.	6630	C CHRISTI	TX
—	361-746	7XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PORTLAVACA	TX
—	361-747	0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	SOUTHWESTERN BELL	9533	BRUNI	TX
—	361-748	not yet reported which blocks →	ONVOY, LLC - TX	903C	KINGSVILLE	TX
—	361-749	not yet reported which blocks →	BRIGHTSPEED OF COASTAL TEXAS, INC	2117	PT ARANSAS	TX
—	361-758	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	ARANSSPASS	TX
—	361-760	not yet reported which blocks →	CENTURYLINK COMMUNICATIONS LLC - TX	7586	C CHRISTI	TX
—	361-761	0XXX7XXX8XXX9XXX · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS LLC - TX	7586	C CHRISTI	TX
—	361-765	not yet reported which blocks →	STPCS JOINT VENTURE, LLC	4290	C CHRISTI	TX
—	361-767	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	ROBSTOWN	TX
—	361-770	not yet reported which blocks →	SOUTHWESTERN BELL	9533	XXXXXXXXXX	TX
—	361-771	none assigned yet which blocks →	GANADO TELEPHONE CO., INC. DBA YK COMMUNICATIONS	2076	GANADO	TX
—	361-772	0XXX1XXX8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HALLETTSVL	TX
—	361-774	none assigned yet which blocks →	STPCS JOINT VENTURE, LLC	4290	C CHRISTI	TX
—	361-775	5XXX6XXX8XXX · 2 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	INGLESIDE	TX
—	361-776	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	INGLESIDE	TX
—	361-777	5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	PORTLDGGRY	TX
—	361-779	none assigned yet which blocks →	STPCS JOINT VENTURE, LLC	4290	C CHRISTI	TX
—	361-781	1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	EDNA	TX
—	361-782	0XXX4XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	EDNA	TX
—	361-785	1XXX7XXX8XXX9XXX · 4 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	SEADRIFT	TX
—	361-786	0XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	THREERIVRS	TX
—	361-788	3XXX which blocks →	SOUTHWESTERN BELL	9533	VICTORIA	TX
—	361-790	none assigned yet which blocks →	SOUTHWESTERN BELL	9533	ROCKPORT	TX
—	361-798	8XXX which blocks →	SOUTHWESTERN BELL	9533	HALLETTSVL	TX
—	361-806	1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-808	4XXX5XXX7XXX8XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	TX
—	361-813	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	C CHRISTI	TX
—	361-814	3XXX6XXX7XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-815	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	C CHRISTI	TX
—	361-816	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	C CHRISTI	TX
—	361-825	not yet reported which blocks →	ONVOY, LLC - TX	903C	C CHRISTI	TX
—	361-826	not yet reported which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	C CHRISTI	TX
—	361-834	0XXX2XXX · 2 holders which blocks →	STPCS JOINT VENTURE, LLC	4290	C CHRISTI	TX
—	361-844	not yet reported which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-850	5XXX which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-851	not yet reported which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-852	9XXX which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-853	not yet reported which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-854	not yet reported which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-855	not yet reported which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-857	not yet reported which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-861	2XXX7XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-865	0XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	FLATONIA	TX
—	361-866	5XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	C CHRISTI	TX
—	361-872	not yet reported which blocks →	LA WARD TEL. EXCH., INC.	2103	LA WARD	TX

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.