Recent prefix assignments

2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 747

ONVOY, LLC - CA 2

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
2018-09-27	747-281	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SNFN PACM	CA
2018-07-31	747-280	not yet reported which blocks →	SHELCOMM	0051	NO HOLLYWD	CA
2018-05-08	747-278	not yet reported which blocks →	SHELCOMM	0051	NORTHRIDGE	CA
2018-03-15	747-277	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	NO HOLLYWD	CA
2018-03-15	747-389	0–9 XXXall 10 · 5 holders which blocks →	METROPCS NETWORKS, LLC	899D	NO HOLLYWD	CA
2018-02-09	747-494	0–9 XXXall 10 · 6 holders which blocks →	PAETEC ITEL, LLC	829J	CANOGAPARK	CA
2018-01-29	747-270	0–9 XXXall 10 · 8 holders which blocks →	BLUIP, INC.	819H	GLENDALE	CA
2017-11-21	747-344	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	BRBN BRBN	CA
2017-11-08	747-609	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GLENDALE	CA
2017-10-19	747-269	0–9 XXXall 10 · 6 holders which blocks →	METROPCS NETWORKS, LLC	899D	SNFN SPLV	CA
2017-09-14	747-262	0–9 XXXall 10 · 5 holders which blocks →	METROPCS NETWORKS, LLC	899D	VAN NUYS	CA
2017-09-13	747-259	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CANOGAPARK	CA
2017-08-22	747-755	0–9 XXXall 10 · 5 holders which blocks →	INTEGRATED PATH COMMUNICATIONS, LLC - CA	707H	NORTHRIDGE	CA
2017-08-16	747-244	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NORTHRIDGE	CA
2017-06-08	747-240	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	GLENDALE	CA
2017-04-14	747-219	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	AGOURA	CA
2016-12-27	747-291	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	BRBN BRBN	CA
2016-11-14	747-260	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	SNFN SNFN	CA
2016-11-04	747-276	0–9 XXXall 10 · 8 holders which blocks →	T-MOBILE USA, INC.	6529	VAN NUYS	CA
2016-10-11	747-275	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	AGOURA	CA
2016-08-26	747-267	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	RESEDA	CA
2016-08-26	747-274	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	SNFN PACM	CA
2016-08-18	747-268	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	PSDN LACN	CA
2016-08-12	747-257	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	GLENDALE	CA
2016-08-08	747-218	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	LACRSCENTA	CA
2016-07-29	747-217	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	VAN NUYS	CA
2016-07-22	747-216	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	NORTHRIDGE	CA
2016-07-19	747-214	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NO HOLLYWD	CA
2016-05-11	747-212	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	AGOURA	CA
2016-04-14	747-207	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SUNLD TJNG	CA
2016-03-03	747-273	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GLENDALE	CA
2016-02-26	747-206	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NORTHRIDGE	CA
2016-02-24	747-205	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	NO HOLLYWD	CA
2016-02-10	747-204	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	CANOGAPARK	CA
2015-12-07	747-215	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	GLENDALE	CA
2015-10-20	747-247	0–9 XXXall 10 · 5 holders which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	VAN NUYS	CA
2015-10-08	747-282	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	AGOURA	CA
2015-10-02	747-266	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNFN SPLV	CA
2015-10-02	747-271	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	BRBN SNVY	CA
2015-09-22	747-203	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	NO HOLLYWD	CA
2015-09-16	747-261	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7139	BRBN BRBN	CA
2015-09-16	747-265	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	RESEDA	CA
2015-08-03	747-283	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	BRBN BRBN	CA
2015-07-29	747-208	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	VAN NUYS	CA
2015-07-24	747-263	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CANOGAPARK	CA
2015-07-20	747-272	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	GLENDALE	CA
2015-07-13	747-255	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	LACRSCENTA	CA
2015-07-10	747-251	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SNFN PACM	CA
2015-06-04	747-250	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	VAN NUYS	CA
2015-06-03	747-264	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	VAN NUYS	CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.