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
2016-02-24	240-570	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MD	876D	ASHTON238	MD
2016-02-24	302-775	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - DE	969E	SELBYVILLE	DE
2016-02-24	314-356	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	ST LOUIS	MO
2016-02-24	346-387	0–9 XXXall 10 · 4 holders which blocks →	ETS TELEPHONE COMPANY, INC.	2091	KATY	TX
2016-02-24	401-618	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - RI	977E	CENTREDALE	RI
2016-02-24	405-832	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA OK - LLC	530C	BRITTON	OK
2016-02-24	424-306	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	TORRANCE	CA
2016-02-24	442-201	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - CA	649C	LEE VINING	CA
2016-02-24	470-284	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - GA	067D	VILLA RICA	GA
2016-02-24	470-892	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - GA	6116	GAINESVL	GA
2016-02-24	502-907	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	LOUISVILLE	KY
2016-02-24	616-201	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	GRANDHAVEN	MI
2016-02-24	707-917	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	VALLEJO	CA
2016-02-24	747-205	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	NO HOLLYWD	CA
2016-02-24	904-760	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	JACKSONVL	FL
2016-02-24	913-246	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF KANSAS, LLC - KS	018H	ATCHISON	KS
2016-02-24	929-218	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN10	NY
2016-02-24	931-414	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MCMINNVL	TN
2016-02-24	949-312	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CAPITRNVLY	CA
2016-02-23	213-318	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LSAN DA 10	CA
2016-02-23	217-200	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CHAMPAURBN	IL
2016-02-23	217-716	0XXX1XXX2XXX6XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	CARLINVL	IL
2016-02-23	386-270	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - FL	937C	FLAGLERBCH	FL
2016-02-23	469-290	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	FORNEY	TX
2016-02-23	562-474	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	NORWALK	CA
2016-02-23	567-314	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 8 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	FREMONT	OH
2016-02-23	609-663	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	ALLENTOWN	NJ
2016-02-23	803-877	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	NEWBERRY	SC
2016-02-23	901-586	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TN	525E	ARLINGTON	TN
2016-02-23	901-641	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TN	525E	SOMERVILLE	TN
2016-02-22	267-810	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	DOYLESTOWN	PA
2016-02-22	337-609	0–9 XXXwhole prefix which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	LAFAYETTE	LA
2016-02-22	475-275	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CT	639C	BYRAM	CT
2016-02-22	575-205	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM	7464	TUCUMCARI	NM
2016-02-22	734-577	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	WILLIS	MI
2016-02-22	781-427	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MA	892D	NORWELL	MA
2016-02-22	805-507	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	VNTRA CNTL	CA
2016-02-22	816-281	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MO	093F	BELTON	MO
2016-02-22	830-215	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - TX	903C	KENEDY	TX
2016-02-22	864-586	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	SPARTANBG	SC
2016-02-22	949-799	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	RNCHOVIEJO	CA
2016-02-22	984-265	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NC	8389	SILER CITY	NC
2016-02-19	226-842	not yet reported which blocks →	Iristel Inc.	154E	Sarnia	—
2016-02-19	249-493	not yet reported which blocks →	Iristel Inc.	154E	Sault Ste. Marie	—
2016-02-19	249-494	not yet reported which blocks →	Iristel Inc.	154E	Peterborough	—
2016-02-19	346-404	0–9 XXXall 10 · 2 holders which blocks →	IP GLOBAL NETWORKS - TX	763H	HOUSTON	TX
2016-02-19	437-371	not yet reported which blocks →	Iristel Inc.	154E	Toronto	—
2016-02-19	458-225	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - OR	750E	MEDFORD	OR
2016-02-19	579-793	not yet reported which blocks →	Iristel Inc.	154E	Sorel	—
2016-02-19	581-812	not yet reported which blocks →	Iristel Inc.	154E	Quebec	—

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.