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
2016-03-07	865-830	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - TN	525E	SOLWAY	TN
2016-03-07	873-738	not yet reported which blocks →	Iristel Inc.	154E	Buckingham	—
2016-03-07	909-403	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	RUNNINGSPG	CA
2016-03-07	949-408	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	IRVINE	CA
2016-03-07	989-267	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLCV - MI	543C	ST HELEN	MI
2016-03-04	269-237	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	ONVOY, LLCV - MI	543C	THREE OAKS	MI
2016-03-04	405-407	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OK	409F	NOBLE	OK
2016-03-04	458-219	0–9 XXXall 10 · 7 holders which blocks →	UNITED STATES CELLULAR - OR	6349	HERMISTON	OR
2016-03-04	470-287	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - GA	067D	CLERMONT	GA
2016-03-04	470-786	0–9 XXXall 10 · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ATLANTA	GA
2016-03-04	562-269	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	LONG BEACH	CA
2016-03-04	573-713	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - MO	093F	FARMINGTON	MO
2016-03-04	587-854	not yet reported which blocks →	Iristel Inc.	154E	Stettler	—
2016-03-04	616-737	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	SARANAC	MI
2016-03-04	628-237	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SAUSALITO	CA
2016-03-04	657-321	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2016-03-04	754-399	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - FL	937C	DEERFLDBCH	FL
2016-03-04	816-491	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	KANSASCITY	MO
2016-03-04	865-205	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TN	525E	LOUDON	TN
2016-03-04	951-405	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	RIVERSIDE	CA
2016-03-03	240-758	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LAUREL236	MD
2016-03-03	269-371	0–9 XXXwhole prefix which blocks →	ONVOY, LLCV - MI	543C	BELLEVUE	MI
2016-03-03	339-210	0–9 XXXall 10 · 8 holders which blocks →	ONVOY, LLC - MA	892D	SAUGUS	MA
2016-03-03	339-215	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MA	892D	LEXINGTON	MA
2016-03-03	346-233	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TX	903C	BAYTOWN	TX
2016-03-03	346-368	0–9 XXXall 10 · 5 holders which blocks →	ETS TELEPHONE COMPANY, INC.	2091	SUGAR LAND	TX
2016-03-03	405-877	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OK	409F	GUTHRIE	OK
2016-03-03	505-587	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NM	206F	LAS VEGAS	NM
2016-03-03	530-317	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	PLVL WEST	CA
2016-03-03	616-580	0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	DORR	MI
2016-03-03	616-779	0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLCV - MI	543C	GRATTAN	MI
2016-03-03	707-210	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	SONOMA	CA
2016-03-03	717-276	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	ANNVILLE	PA
2016-03-03	717-297	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLC - PA	547E	MT GRETNA	PA
2016-03-03	719-917	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CO	026D	LEADVILLE	CO
2016-03-03	747-273	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GLENDALE	CA
2016-03-03	782-339	not yet reported which blocks →	TELUS Integrated Communications	2782	Liverpool	—
2016-03-03	782-340	not yet reported which blocks →	TELUS Integrated Communications	2782	Stewiacke	—
2016-03-03	782-341	not yet reported which blocks →	TELUS Integrated Communications	2782	Brooklyn	—
2016-03-03	782-342	not yet reported which blocks →	TELUS Integrated Communications	2782	Debert	—
2016-03-03	782-343	not yet reported which blocks →	TELUS Integrated Communications	2782	Parrsboro	—
2016-03-03	782-344	not yet reported which blocks →	TELUS Integrated Communications	2782	Upper Musquodoboit	—
2016-03-03	864-383	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - SC	548E	PACOLET	SC
2016-03-03	978-966	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	DANVERS	MA
2016-03-02	208-912	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	BOISE	ID
2016-03-02	336-579	0–9 XXXall 10 · 4 holders which blocks →	SOUTH CAROLINA NET, INC. - NC	511C	GREENSBORO	NC
2016-03-02	470-445	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2016-03-02	479-336	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LONDON	AR
2016-03-02	506-717	not yet reported which blocks →	Iristel Inc.	154E	Saint John	—
2016-03-02	587-815	not yet reported which blocks →	Iristel Inc.	154E	Red Deer	—

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.