Recent prefix assignments

341 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 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
2021-03-26	314-897	0–9 XXXall 10 · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	ST LOUIS	MO
2021-03-26	401-358	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - RI	003F	PASCOAG	RI
2021-03-26	438-373	not yet reported which blocks →	Videotron Ltd.	328F	Montreal	—
2021-03-26	440-880	0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	AUSTINBURG	OH
2021-03-26	469-943	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	GRANDPRARI	TX
2021-03-26	475-280	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - CT	6624	ANSONIDRBY	CT
2021-03-26	559-613	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MADERA	CA
2021-03-26	572-200	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	FORT COBB	OK
2021-03-26	572-222	0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks →	FRACTEL, LLC	965H	PERKINS	OK
2021-03-26	572-300	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	WEWOKA	OK
2021-03-26	572-333	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	PAULS VLY	OK
2021-03-26	572-356	0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	MAYSVILLE	OK
2021-03-26	572-400	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	WANETTE	OK
2021-03-26	572-444	0XXX4XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	NICOMAPARK	OK
2021-03-26	572-465	0XXX1XXX4XXX5XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	WASHINGTON	OK
2021-03-26	572-500	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	POCASSET	OK
2021-03-26	572-529	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	ALEX	OK
2021-03-26	572-600	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 6 holders which blocks →	TERRA NOVA TELECOM INC.	145J	MAUD	OK
2021-03-26	572-666	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	EL RENO	OK
2021-03-26	572-777	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	WIRETAP TELECOM, LLC.	733J	HARRAH	OK
2021-03-26	572-800	0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	WELLSTON	OK
2021-03-26	572-888	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	PIEDMONT	OK
2021-03-26	572-900	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	MERIDIAN	OK
2021-03-26	572-999	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	GUTHRIE	OK
2021-03-26	581-896	not yet reported which blocks →	Fibernetics Corporation	464D	Stoneham	—
2021-03-26	657-494	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ANAHEIM	CA
2021-03-26	726-202	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	SANANTONIO	TX
2021-03-26	726-895	0–9 XXXall 10 · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	SANANTONIO	TX
2021-03-26	857-370	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BROOKLINE	MA
2021-03-26	903-998	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	CORSICANA	TX
2021-03-26	912-567	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	BRUNSWICK	GA
2021-03-26	915-895	0–9 XXXall 10 · 4 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	EL PASO	TX
2021-03-26	930-903	0XXX1XXX2XXX3XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	TERREHAUTE	IN
2021-03-25	209-891	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ATWATER	CA
2021-03-25	219-273	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	HIGHLAND	IN
2021-03-25	223-262	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7315	MOUNTVILLE	PA
2021-03-25	224-376	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FOX LAKE	IL
2021-03-25	240-759	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MD	876D	WSNG238Z15	MD
2021-03-25	240-820	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - MD	876D	ASHTON238	MD
2021-03-25	256-893	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	HUNTSVILLE	AL
2021-03-25	326-201	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOUNT ORAB	OH
2021-03-25	334-895	0–9 XXXall 10 · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	MONTGOMERY	AL
2021-03-25	413-481	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	BRIMFIELD	MA
2021-03-25	413-483	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MA	892D	ADAMS	MA
2021-03-25	413-491	0XXX1XXX2XXX3XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	CHESTERFLD	MA
2021-03-25	413-514	0XXX1XXX2XXX3XXX4XXX6XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	HAMPDEN	MA
2021-03-25	413-633	1XXX2XXX3XXX6XXX7XXX · 2 holders which blocks →	ONVOY, LLC - MA	892D	SHELBUNFLS	MA
2021-03-25	413-713	0XXX1XXX3XXX7XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	TURNERSFLS	MA
2021-03-25	413-724	0XXX2XXX4XXX5XXX6XXX · 4 holders which blocks →	ONVOY, LLC - MA	892D	WILLIAMSBG	MA
2021-03-25	413-741	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	WILLIAMSTN	MA

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.