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 940

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
—	940-452	6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MINERLWLLS	TX
—	940-453	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	DENTON	TX
—	940-454	not yet reported which blocks →	VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW	1163	BENJAMIN	TX
—	940-455	0XXX1XXX3XXX4XXX6XXX8XXX9XXX · 2 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	BARTONVL	TX
—	940-458	8XXX which blocks →	BRIGHTSPEED OF TEXAS, INC.	2114	SANGER	TX
—	940-459	not yet reported which blocks →	SANTA ROSA TELEPHONE COOPERATIVE, INC.	4046	BENJAMIN	TX
—	940-461	not yet reported which blocks →	ONVOY, LLC - TX	903C	CHILDRESS	TX
—	940-464	1XXX5XXX6XXX9XXX · 2 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	ARGYLE	TX
—	940-465	3XXX5XXX8XXX9XXX · 3 holders which blocks →	METROPCS, INC.	5562	DENTON	TX
—	940-466	2XXX4XXX6XXX8XXX · 2 holders which blocks →	BRIGHTSPEED OF TEXAS, INC.	2114	SLIDELL	TX
—	940-474	none assigned yet which blocks →	SANTA ROSA TEL COOP INC	2141	TRUSCOTT	TX
—	940-476	not yet reported which blocks →	COMMUNITY TEL. CO.	2061	JOY	TX
—	940-479	1XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	BRIGHTSPEED OF TEXAS, INC.	2114	PONDER	TX
—	940-482	not yet reported which blocks →	BRIGHTSPEED OF TEXAS, INC.	2114	KRUM	TX
—	940-483	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	DENTON	TX
—	940-484	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	DENTON	TX
—	940-487	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	GRANDE COMMUNICATIONS NETWORKS, INC. - TX	7670	BARTONVL	TX
—	940-488	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	GRANDE COMMUNICATIONS NETWORKS, INC. - TX	7670	AUBREY	TX
—	940-489	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	GRANDE COMMUNICATIONS NETWORKS, INC. - TX	7670	ARGYLE	TX
—	940-490	0XXX1XXX5XXX · 2 holders which blocks →	ONVOY, LLC - TX	903C	MILLSAP	TX
—	940-492	6XXX which blocks →	TON80 COMMUNICATIONS, LLC	516J	PALO PINTO	TX
—	940-495	not yet reported which blocks →	ELECTRA TEL. CO, INC.	2069	ELECTRA	TX
—	940-497	not yet reported which blocks →	BRIGHTSPEED OF NORTHERN TEXAS, INC.	2101	LAKEDALLAS	TX
—	940-498	2XXX7XXX which blocks →	BRIGHTSPEED OF NORTHERN TEXAS, INC.	2101	LAKEDALLAS	TX
—	940-507	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	JACKSBORO	TX
—	940-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	TX
—	940-521	3XXX6XXX7XXX8XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	GRAHAM	TX
—	940-524	not yet reported which blocks →	NORTH TEXAS TEL. CO.	2043	PETROLIA	TX
—	940-525	not yet reported which blocks →	COMMUNITY TEL. CO.	2061	LKKICKAPOO	TX
—	940-528	not yet reported which blocks →	COMMUNITY TEL. CO.	2061	LKARROWHED	TX
—	940-529	not yet reported which blocks →	NORTH TEXAS TEL. CO.	2043	PETROLIA	TX
—	940-535	4XXX5XXX7XXX8XXX · 3 holders which blocks →	GRANDE COMMUNICATIONS NETWORKS, INC. - TX	7670	DENTON	TX
—	940-536	0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	GRANDE COMMUNICATIONS NETWORKS, INC. - TX	7670	DENTON	TX
—	940-537	none assigned yet which blocks →	SANTA ROSA TEL COOP INC	2141	KIRKLAND	TX
—	940-538	2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	HENRIETTA	TX
—	940-541	not yet reported which blocks →	COMMUNITY TEL. CO.	2061	SCOTLAND	TX
—	940-544	not yet reported which blocks →	SANTA ROSA TEL COOP INC	2141	CHARLIE	TX
—	940-548	not yet reported which blocks →	ONVOY, LLC - TX	903C	QUANAH	TX
—	940-549	not yet reported which blocks →	SOUTHWESTERN BELL	9533	GRAHAM	TX
—	940-550	0XXX2XXX3XXX6XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	GRAHAM	TX
—	940-552	3XXX8XXX which blocks →	SOUTHWESTERN BELL	9533	VERNON	TX
—	940-553	0XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	VERNON	TX
—	940-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	TX
—	940-557	5XXX7XXX8XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	WICHITAFLS	TX
—	940-563	not yet reported which blocks →	VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW	1163	MEGARGEL	TX
—	940-564	none assigned yet which blocks →	BRAZOS TEL. COOP., INC.	2041	OLNEY	TX
—	940-565	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	DENTON	TX
—	940-566	not yet reported which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	DENTON	TX
—	940-567	0XXX4XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	JACKSBORO	TX
—	940-569	6XXX7XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	BURKBURNTT	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.