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
2016-06-30	985-299	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	NAPOLEONVL	LA
2016-06-30	989-338	0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	CARSONCITY	MI
2016-06-29	207-292	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BIDDEFORD	ME
2016-06-29	209-707	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	MANTECA	CA
2016-06-29	253-409	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WA	006F	AUBURN	WA
2016-06-29	319-252	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WATERLOO	IA
2016-06-29	323-917	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LSAN DA 13	CA
2016-06-29	337-612	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 5 holders which blocks →	LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC.	4930	IOTA	LA
2016-06-29	337-614	0XXX1XXX2XXX4XXX5XXX6XXX · 4 holders which blocks →	LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC.	4930	CANKTON	LA
2016-06-29	424-319	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CMTN GRDN	CA
2016-06-29	425-616	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WA	006F	HALLS LAKE	WA
2016-06-29	430-312	not yet reported which blocks →	ETEX COMMUNCATIONS, LLC DBA ETEX TELECOM - TX	3196	JEFFERSON	TX
2016-06-29	438-920	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Montreal	—
2016-06-29	505-356	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GRANTS	NM
2016-06-29	619-513	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHULAVISTA	CA
2016-06-29	657-341	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	BREA	CA
2016-06-29	681-241	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	GLENVILLE	WV
2016-06-29	709-343	not yet reported which blocks →	Bragg Communications Inc.	4878	St. Anthony	—
2016-06-29	774-772	0–9 XXXall 10 · 7 holders which blocks →	METROPCS, INC.	5562	AUBURN	MA
2016-06-29	804-558	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - VA	4644	RICHMOND	VA
2016-06-29	904-763	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	JACKSONVL	FL
2016-06-29	909-417	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	POMONA	CA
2016-06-29	925-375	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CONCORD	CA
2016-06-29	951-484	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	HEMT HEMT	CA
2016-06-29	959-209	0–9 XXXall 10 · 7 holders which blocks →	CSC VOICE, LLC	612K	WATERTOWN	CT
2016-06-28	218-501	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MN	184D	ALBORN	MN
2016-06-28	218-516	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MN	184D	BIWABIK	MN
2016-06-28	248-907	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	FARMINGTON	MI
2016-06-28	267-920	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MORRISVL	PA
2016-06-28	317-764	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NOBLESVL	IN
2016-06-28	317-778	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	INDIANAPLS	IN
2016-06-28	385-441	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	SALT LAKE	UT
2016-06-28	409-231	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JASPER	TX
2016-06-28	424-366	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CMTN CMTN	CA
2016-06-28	469-847	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PLANO	TX
2016-06-28	469-858	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	GRANDPRARI	TX
2016-06-28	469-969	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	PLANO	TX
2016-06-28	469-981	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	ROYSE CITY	TX
2016-06-28	507-260	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MN	184D	BALATON	MN
2016-06-28	518-830	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	BERNE	NY
2016-06-28	580-905	0XXX9XXX · 2 holders which blocks →	WINDSTREAM OKLAHOMA, INC.	1965	MILL CREEK	OK
2016-06-28	580-960	0XXX9XXX · 2 holders which blocks →	WINDSTREAM OKLAHOMA, INC.	1965	CORN	OK
2016-06-28	737-216	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	TAYLOR	TX
2016-06-28	845-307	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	CLINTONCOR	NY
2016-06-28	909-550	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	FONTANA	CA
2016-06-28	937-988	0–9 XXXall 10 · 2 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BEAVERCREK	OH
2016-06-28	949-469	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	IRVINE	CA
2016-06-27	202-855	0–9 XXXall 10 · 3 holders which blocks →	BARR TELL USA, INC. - DC	879H	WSHNGTNZN1	DC
2016-06-27	206-487	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	SEATTLE	WA
2016-06-27	226-899	not yet reported which blocks →	Fido Solutions Inc.	5643	Kitchener-Waterloo	—

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.