Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 21

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
2015-06-16	616-888	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLCV - MI	543C	GRAND RPDS	MI
2015-06-16	619-762	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	CORONADO	CA
2015-06-16	636-428	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MO	7218	HIGH RIDGE	MO
2015-06-16	762-667	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - GA	067D	ROYSTON	GA
2015-06-16	803-901	8XXX9XXX · 2 holders which blocks →	WINDSTREAM SOUTH CAROLINA, INC.	0517	STMATTHEWS	SC
2015-06-16	808-829	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - HI	9414	HONOLULU	HI
2015-06-16	864-702	0–9 XXXall 10 · 5 holders which blocks →	WINDSTREAM SOUTH CAROLINA, INC.	0517	LANDRUM	SC
2015-06-16	864-806	0–9 XXXall 10 · 3 holders which blocks →	WINDSTREAM SOUTH CAROLINA, INC.	0517	INMAN	SC
2015-06-16	910-698	0XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	WINDSTREAM NORTH CAROLINA, INC.	0476	WAGRAM	NC
2015-06-16	910-968	0–9 XXXall 10 · 5 holders which blocks →	SOUTH CAROLINA NET, INC. - NC	511C	JACKSONVL	NC
2015-06-16	925-393	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	WALNUT CRK	CA
2015-06-16	947-777	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLCV - MI	543C	MILFDWH LK	MI
2015-06-15	225-960	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	BATONROUGE	LA
2015-06-15	226-265	not yet reported which blocks →	TELUS Integrated Communications	2782	Lambeth	—
2015-06-15	252-545	0–9 XXXall 10 · 5 holders which blocks →	SOUTH CAROLINA NET, INC. - NC	511C	ROCKYMOUNT	NC
2015-06-15	253-457	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	AUBURN	WA
2015-06-15	289-677	not yet reported which blocks →	Iristel Inc.	154E	Cobourg	—
2015-06-15	470-868	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	CARROLLTON	GA
2015-06-15	480-771	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2015-06-15	504-930	0–9 XXXall 10 · 6 holders which blocks →	VOICESTREAM GSM I, LLC	150C	NEWORLEANS	LA
2015-06-15	575-429	0XXX2XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CLAYTON	NM
2015-06-15	579-632	not yet reported which blocks →	Videotron Ltd.	8306	Lachute	—
2015-06-15	579-795	not yet reported which blocks →	Iristel Inc.	154E	L'Epiphanie-l'Assomption	—
2015-06-15	579-995	not yet reported which blocks →	Iristel Inc.	154E	St-Sauveur	—
2015-06-15	623-499	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PHOENIX	AZ
2015-06-15	705-702	not yet reported which blocks →	Iristel Inc.	154E	Lindsay	—
2015-06-15	774-812	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	SIASCONSET	MA
2015-06-15	907-446	7XXX which blocks →	GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION	6872	FORT YUKON	AK
2015-06-15	985-602	0–9 XXXall 10 · 4 holders which blocks →	HUNT TELECOMMUNICATIONS, LLC - LA	181D	HAMMOND	LA
2015-06-12	209-637	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TRACY	CA
2015-06-12	219-806	0–9 XXXall 10 · 8 holders which blocks →	T-MOBILE USA, INC.	6529	GARY	IN
2015-06-12	240-562	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	GAITHERSBG	MD
2015-06-12	317-743	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	GREENWOOD	IN
2015-06-12	323-946	0–9 XXXall 10 · 3 holders which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	LSAN DA 14	CA
2015-06-12	440-817	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	BRECKSVL	OH
2015-06-12	469-778	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	DALLAS	TX
2015-06-12	579-254	not yet reported which blocks →	TELUS Quebec	2243	Mirabel-Aeroport	—
2015-06-12	609-854	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	WILDWOOD	NJ
2015-06-12	614-369	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	COLUMBUS	OH
2015-06-12	615-980	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TN	114F	NASHVILLE	TN
2015-06-12	620-523	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	UNITED WIRELESS COMMUNICATIONS, INC. - KS	642H	DODGE CITY	KS
2015-06-12	702-984	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NV	9145	LAS VEGAS	NV
2015-06-12	707-842	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	WHITETHORN	CA
2015-06-12	707-880	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VACAVILLE	CA
2015-06-12	708-578	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OAK FOR SO	IL
2015-06-12	740-900	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	SOMERSET	OH
2015-06-12	862-281	0–9 XXXall 10 · 5 holders which blocks →	CSC VOICE, LLC	612K	PASSAIC	NJ
2015-06-12	872-810	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	CHICGOZN02	IL
2015-06-12	904-903	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	JACKSONVL	FL
2015-06-11	262-933	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	WAUKESHA	WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.