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 830

ONVOY, LLC - TX 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
—	830-529	1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks →	MATRIX TELECOM, LLC. S/I/I TNCI - TX	7715	PIPE CREEK	TX
—	830-532	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	MATRIX TELECOM, LLC. S/I/I TNCI - TX	7715	CAMPBELLTN	TX
—	830-534	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	GILLETT	TX
—	830-535	2XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	PIPE CREEK	TX
—	830-537	not yet reported which blocks →	GUADALUPE VALLEY TEL. COOP., INC.	2083	SABINA	TX
—	830-538	0XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	CASTROVL	TX
—	830-540	1XXX5XXX which blocks →	GUADALUPE VALLEY TEL. COOP., INC.	2083	SATURN	TX
—	830-541	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	DEVINE	TX
—	830-542	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	FLORESVL	TX
—	830-547	not yet reported which blocks →	MATRIX TELECOM, LLC. S/I/I TNCI - TX	7715	SEGUIN	TX
—	830-549	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	SEGUIN	TX
—	830-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	TX
—	830-557	0XXX2XXX3XXX7XXX8XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	SEGUIN	TX
—	830-560	0XXX2XXX3XXX6XXX8XXX9XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	SEGUIN	TX
—	830-562	not yet reported which blocks →	HILL COUNTRY TEL. COOP., INC.	2086	TARPLEY	TX
—	830-563	0XXX4XXX8XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	BRACKETTVL	TX
—	830-569	none assigned yet which blocks →	SOUTHWESTERN BELL	9533	PLEASANTON	TX
—	830-570	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PLEASANTON	TX
—	830-579	3XXX6XXX7XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	CAMPBELLTN	TX
—	830-580	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	JOURDANTON	TX
—	830-581	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	LAVERNIA	TX
—	830-582	0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	NIXON	TX
—	830-583	7XXX8XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	KENEDY	TX
—	830-587	0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	SMILEY	TX
—	830-589	not yet reported which blocks →	HILL COUNTRY TEL. COOP., INC.	2086	MEDINA	TX
—	830-591	not yet reported which blocks →	SOUTHWESTERN BELL	9533	UVALDE	TX
—	830-596	4XXX which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	GRANITSHLS	TX
—	830-597	not yet reported which blocks →	SOUTHWEST TEXAS TEL. CO.	2135	CAMP WOOD	TX
—	830-598	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	GRANITSHLS	TX
—	830-606	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-608	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-609	4XXX7XXX8XXX9XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	TX
—	830-612	0XXX5XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	MEDINALAKE	TX
—	830-620	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-623	2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KARNESCITY	TX
—	830-624	1XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-625	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-626	9XXX which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-627	3XXX4XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-629	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-630	3XXX4XXX6XXX8XXX9XXX · 2 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	PIPE CREEK	TX
—	830-631	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PLEASANTON	TX
—	830-632	2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	GRANDE COMMUNICATIONS NETWORKS, INC. - TX	7670	NEWBRANFLS	TX
—	830-634	not yet reported which blocks →	HILL COUNTRY TEL. COOP., INC.	2086	CENTER PT	TX
—	830-635	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MATRIX TELECOM, LLC. S/I/I TNCI - TX	7715	POTEET	TX
—	830-639	none assigned yet which blocks →	GUADALUPE VALLEY TEL. COOP., INC.	2083	KINGSBURY	TX
—	830-640	not yet reported which blocks →	HILL COUNTRY TEL. COOP., INC.	2086	GARVENSTOR	TX
—	830-643	4XXX9XXX which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-644	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	STONEWALL	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.