Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 25

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12

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
2021-10-04	782-779	not yet reported which blocks →	TELUS Mobility	8303	Truro	—
2021-10-04	782-780	not yet reported which blocks →	TELUS Mobility	8303	Truro	—
2021-10-04	782-781	not yet reported which blocks →	TELUS Mobility	8303	Truro	—
2021-10-04	862-383	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PASSAIC	NJ
2021-10-04	984-840	0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	VIRGILINA	NC
2021-10-01	279-213	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LINCOLN	CA
2021-10-01	279-214	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	FAIR OAKS	CA
2021-10-01	307-387	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WY	081F	GILLETTE	WY
2021-10-01	364-597	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	CANEYVILLE	KY
2021-10-01	367-993	not yet reported which blocks →	TELUS Mobility	8303	Alma	—
2021-10-01	442-844	4XXX8XXX · 2 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	SANDY VLLY	CA
2021-10-01	445-217	0–9 XXXall 10 · 2 holders which blocks →	VONAGE AMERICA LLC	197D	PHPHSBZN38	PA
2021-10-01	509-603	0–9 XXXwhole prefix which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SPOKANE	WA
2021-10-01	530-850	0XXX8XXX · 2 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	VERDI	CA
2021-10-01	531-274	0–9 XXXall 10 · 3 holders which blocks →	UNITED STATES CELLULAR - NE	6263	WAYNE	NE
2021-10-01	534-253	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MARSHFIELD	WI
2021-10-01	579-540	not yet reported which blocks →	Cooptel	818D	Ste-Victoire	—
2021-10-01	579-541	not yet reported which blocks →	Cooptel	818D	St-Ours	—
2021-10-01	579-543	not yet reported which blocks →	Cooptel	818D	St-Pie	—
2021-10-01	579-544	not yet reported which blocks →	Cooptel	818D	St-Damase	—
2021-10-01	579-545	not yet reported which blocks →	Cooptel	818D	Ste-Madeleine	—
2021-10-01	579-546	not yet reported which blocks →	Cooptel	818D	St-Thomas-d'Aquin	—
2021-10-01	579-547	not yet reported which blocks →	Cooptel	818D	St-Zephirin	—
2021-10-01	616-353	0XXX1XXX5XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	SAND LAKE	MI
2021-10-01	719-715	0–9 XXXall 10 · 6 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	COLORDOSPG	CO
2021-10-01	814-298	1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	ERIE	PA
2021-10-01	878-259	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	COMMIO, LLC	939H	EXPORT	PA
2021-10-01	928-450	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	BULLHEADCY	AZ
2021-10-01	939-340	0–9 XXXwhole prefix which blocks →	PUERTO RICO TELCO DBA CLARO PUERTO RICO	4823	BAYAMONNOR	PR
2021-10-01	949-806	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	CAPITRNVLY	CA
2021-10-01	970-990	0XXX which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	SO BIG SPG	CO
2021-10-01	986-220	0XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FILER MUTUAL TEL CO	2220	FILER	ID
2021-09-30	218-608	0XXX2XXX8XXX · 2 holders which blocks →	NUSO, LLC	478J	DULUTH	MN
2021-09-30	256-940	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	JACKSONVL	AL
2021-09-30	334-754	0XXX4XXX5XXX which blocks →	ONVOY SPECTRUM, LLC	624H	UNIONTOWN	AL
2021-09-30	334-930	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MARION	AL
2021-09-30	334-940	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	AUBURN	AL
2021-09-30	506-565	not yet reported which blocks →	TELUS Mobility	8303	Miramichi	—
2021-09-30	579-467	not yet reported which blocks →	Fibernetics Corporation	464D	Mascouche	—
2021-09-30	579-468	not yet reported which blocks →	Fibernetics Corporation	464D	Terrebonne	—
2021-09-30	672-975	not yet reported which blocks →	TELUS Mobility	8301	Chilliwack	—
2021-09-30	727-426	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	CLEARWATER	FL
2021-09-30	774-828	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WORCESTER	MA
2021-09-30	782-774	not yet reported which blocks →	TELUS Mobility	8303	Halifax	—
2021-09-30	873-689	not yet reported which blocks →	IVIC Telecom s.e.n.c	817D	Norbertville	—
2021-09-30	873-690	not yet reported which blocks →	IVIC Telecom s.e.n.c	817D	Lyster	—
2021-09-30	873-691	not yet reported which blocks →	IVIC Telecom s.e.n.c	817D	Laurierville	—
2021-09-30	873-989	not yet reported which blocks →	TELUS Mobility	8303	Sherbrooke	—
2021-09-30	938-310	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MADISON	AL
2021-09-30	938-410	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	RED BAY	AL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.