Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19

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
2016-01-13	669-770	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	SNJS NORTH	CA
2016-01-13	786-857	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	MIAMI	FL
2016-01-13	819-900	not yet reported which blocks →	Iristel Inc.	154E	Kuujjuaq	—
2016-01-13	870-970	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	FORREST CY	AR
2016-01-13	912-438	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	SAVANNAH	GA
2016-01-13	915-352	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2016-01-12	240-817	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ASHTON236	MD
2016-01-12	346-310	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	HOUSTON	TX
2016-01-12	365-300	not yet reported which blocks →	Iristel Inc.	154E	Ajax-Pickering	—
2016-01-12	365-400	not yet reported which blocks →	Iristel Inc.	154E	Cobourg	—
2016-01-12	401-425	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	CUMBLND HL	RI
2016-01-12	469-805	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GRANDPRARI	TX
2016-01-12	571-373	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN19	VA
2016-01-12	571-778	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	MANASSAS	VA
2016-01-12	647-571	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2016-01-12	707-203	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - CA	649C	ELK	CA
2016-01-12	707-606	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	BENICIA	CA
2016-01-12	937-963	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DAYTON	OH
2016-01-12	980-259	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	CHARLOTTE	NC
2016-01-12	980-425	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	MONROE	NC
2016-01-11	312-539	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2016-01-11	312-838	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2016-01-11	339-216	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	RANDOLPH	MA
2016-01-11	571-775	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	WSNGTNZN08	VA
2016-01-11	618-706	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BATCHTOWN	IL
2016-01-11	720-597	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LONGMONT	CO
2016-01-11	737-208	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	AUSTIN	TX
2016-01-11	737-213	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SAN MARCOS	TX
2016-01-11	737-215	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GEORGETOWN	TX
2016-01-11	757-300	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	NRFOLKZON1	VA
2016-01-11	757-807	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	NRFOLKZON2	VA
2016-01-11	804-429	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WAVERLY	VA
2016-01-08	385-388	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - UT	7530	MURRAY	UT
2016-01-08	469-281	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TX	903C	DLFTWTARPT	TX
2016-01-08	716-475	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	TONAWANDA	NY
2016-01-08	716-476	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	TONAWANDA	NY
2016-01-08	717-797	0–9 XXXall 10 · 4 holders which blocks →	D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE	6846	HANOVER	PA
2016-01-08	815-755	0XXX1XXX4XXX5XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC	224C	SENECA	IL
2016-01-08	878-205	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - PA	547E	CONNELLSVL	PA
2016-01-07	306-800	not yet reported which blocks →	Iristel Inc.	154E	Biggar	—
2016-01-07	365-200	not yet reported which blocks →	Distributel	082E	Caledon East	—
2016-01-07	365-201	not yet reported which blocks →	Distributel	082E	Castlemore	—
2016-01-07	365-202	not yet reported which blocks →	Distributel	082E	Port Credit	—
2016-01-07	365-203	not yet reported which blocks →	Distributel	082E	Snelgrove	—
2016-01-07	365-204	not yet reported which blocks →	Distributel	082E	Victoria	—
2016-01-07	484-507	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	FLEETWOOD	PA
2016-01-07	575-215	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF NEW MEXICO, LLC - NM	377H	ANTHONY	NM
2016-01-07	579-365	not yet reported which blocks →	Videotron Ltd.	8306	Granby	—
2016-01-07	587-602	not yet reported which blocks →	Iristel Inc.	154E	Airdrie	—
2016-01-07	636-215	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	MAXVILLE	MO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.