Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28

ONVOY, LLC - CA 26

NEW CINGULAR WIRELESS PCS, LLC - IL 26

Rogers Communications Canada Inc. (Wireless) 23

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
—	830-583	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
—	830-645	1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks →	MATRIX TELECOM, LLC. S/I/I TNCI - TX	7715	CHRISTINE	TX
—	830-649	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KERRVILLE	TX
—	830-660	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NEWBRANFLS	TX
—	830-663	0XXX7XXX8XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	DEVINE	TX
—	830-665	0XXX1XXX3XXX6XXX7XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	DEVINE	TX
—	830-669	not yet reported which blocks →	HILL COUNTRY TEL. COOP., INC.	2086	DOSS	TX
—	830-672	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	GONZALES	TX
—	830-676	not yet reported which blocks →	VALLEY TEL. COOP., INC.	2159	ARTESIWLLS	TX
—	830-683	not yet reported which blocks →	SOUTHWEST TEXAS TEL. CO.	2135	ROCKSPRIGS	TX
—	830-685	0XXX2XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	WILLOWCITY	TX
—	830-693	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	MARBLE FLS	TX
—	830-700	not yet reported which blocks →				TX
—	830-701	0XXX2XXX8XXX · 2 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	SOMERSET	TX
—	830-703	none assigned yet which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	DEL RIO	TX
—	830-708	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NEWBRANFLS	TX
—	830-709	1XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	LYTLE	TX
—	830-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	TX
—	830-714	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BULVERDE	TX
—	830-716	1XXX2XXX4XXX8XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SOMERSET	TX
—	830-719	4XXX7XXX8XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DEL RIO	TX
—	830-730	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	NEWBRANFLS	TX
—	830-734	none assigned yet which blocks →	STPCS JOINT VENTURE, LLC	4290	DEL RIO	TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.