Recent prefix assignments

2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 424

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
2006-05-01	424-634	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	REDONDO	CA
2006-04-26	424-644	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	MALIBU	CA
2006-03-31	424-750	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	INGLEWOOD	CA
2006-03-30	424-901	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	W ANGELES	CA
2006-03-28	424-789	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	INGLEWOOD	CA
2006-03-23	424-264	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SAN PEDRO	CA
2006-03-20	424-675	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HAWTHORNE	CA
2006-03-16	424-558	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TORRANCE	CA
—	424-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CA
—	424-220	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	EL SEGUNDO	CA
—	424-239	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	BEVERLYHLS	CA
—	424-246	0–9 XXXall 10 · 4 holders which blocks →	METROPCS NETWORKS, LLC	899D	CMTN GRDN	CA
—	424-247	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	REDONDO	CA
—	424-250	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	LOMITA	CA
—	424-252	0–9 XXXall 10 · 6 holders which blocks →	PAETEC ITEL, LLC	829J	SNMN SNMN	CA
—	424-263	0–9 XXXall 10 · 8 holders which blocks →	AT&T ENTERPRISES, LLC	516C	LOMITA	CA
—	424-279	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	BEVERLYHLS	CA
—	424-282	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	REDONDO	CA
—	424-298	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CULVERCITY	CA
—	424-300	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - CA	649C	CMTN GRDN	CA
—	424-307	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	HAWTHORNE	CA
—	424-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CA
—	424-326	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	CULVERCITY	CA
—	424-327	0–9 XXXall 10 · 6 holders which blocks →	COMCAST PHONE OF CALIFORNIA, LLC	394L	REDONDO	CA
—	424-333	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BEVERLYHLS	CA
—	424-336	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	HAWTHORNE	CA
—	424-340	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	CMTN GRDN	CA
—	424-342	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SAN PEDRO	CA
—	424-354	5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	BEVERLYHLS	CA
—	424-360	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	TORRANCE	CA
—	424-368	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	SAN PEDRO	CA
—	424-375	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	CMTN GRDN	CA
—	424-378	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	LOMITA	CA
—	424-382	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	BEVERLYHLS	CA
—	424-400	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	REDONDO	CA
—	424-408	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	REDONDO	CA
—	424-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CA
—	424-433	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SNMN SNMN	CA
—	424-444	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CMTN CMTN	CA
—	424-456	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	HAWTHORNE	CA
—	424-465	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	W ANGELES	CA
—	424-476	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	REDONDO	CA
—	424-488	0–9 XXXall 10 · 8 holders which blocks →	ONVOY, LLC - CA	649C	TORRANCE	CA
—	424-500	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	SNMN MRVS	CA
—	424-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	CA
—	424-529	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	CMTN CMTN	CA
—	424-542	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	BEVERLYHLS	CA
—	424-543	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	CULVERCITY	CA
—	424-551	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	CMTN GRDN	CA
—	424-552	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	SAN PEDRO	CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.