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 442

NEW CINGULAR WIRELESS PCS, LLC 1

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1

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
2022-02-22	442-533	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	VICTORVL	CA
2022-02-22	442-544	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	ESCONDIDO	CA
2022-02-22	442-822	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	INDIO	CA
2022-02-22	442-855	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	VTVL APVY	CA
2022-02-21	442-568	0–9 XXXall 10 · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ENCINITAS	CA
2022-02-14	442-449	0–9 XXXall 10 · 3 holders which blocks →	COMMIO, LLC	939H	OCSD OCSD	CA
2022-01-26	442-522	0XXX2XXX5XXX · 3 holders which blocks →	FRACTEL, LLC	965H	PARKER DAM	CA
2022-01-14	442-373	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BRAWLEY	CA
2022-01-14	442-637	0–9 XXXall 10 · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	INDIO	CA
2022-01-14	442-733	0XXX6XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PINYON	CA
2022-01-11	442-446	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	CALIFORNCY	CA
2022-01-10	442-646	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BRAWLEY	CA
2022-01-07	442-375	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	OCSD OCSD	CA
2022-01-07	442-532	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	EL CENTRO	CA
2021-11-22	442-385	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7147	SAN MARCOS	CA
2021-11-22	442-895	0–9 XXXall 10 · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	PALM SPG	CA
2021-11-15	442-379	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	EL CENTRO	CA
2021-10-29	442-370	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	INDIO	CA
2021-10-28	442-364	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	BRAWLEY	CA
2021-10-26	442-368	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	VICTORVL	CA
2021-10-25	442-944	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	VISTA	CA
2021-10-19	442-367	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CALEXICO	CA
2021-10-01	442-844	4XXX8XXX · 2 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	SANDY VLLY	CA
2021-09-24	442-402	0–9 XXXall 10 · 3 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	PALM SPG	CA
2021-09-23	442-369	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ENCINITAS	CA
2021-09-21	442-566	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	VALLEY CTR	CA
2021-09-21	442-567	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	FRACTEL, LLC	965H	ESCONDIDO	CA
2021-09-21	442-867	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	BARSTOW	CA
2021-09-17	442-655	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SAN MARCOS	CA
2021-09-02	442-365	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VTVL APVY	CA
2021-08-05	442-366	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PALM SPG	CA
2021-07-30	442-362	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	VISTA	CA
2021-07-29	442-360	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PALM SPG	CA
2021-07-29	442-361	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PALM SPG	CA
2021-07-13	442-866	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	BRAWLEY	CA
2021-07-13	442-977	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	OCSD CRLS	CA
2021-07-07	442-359	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	OCSD CRLS	CA
2021-07-06	442-330	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ESCONDIDO	CA
2021-06-23	442-451	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	TELNYX LLC	073H	YUCCA VLY	CA
2021-06-07	442-455	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - CA	649C	BARSTOW	CA
2021-05-18	442-358	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	RAMONA	CA
2021-04-23	442-466	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	OCSD PDTN	CA
2021-04-23	442-933	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	INDIO	CA
2021-04-22	442-433	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	BRAWLEY	CA
2021-04-22	442-755	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	VICTORVL	CA
2021-04-02	442-357	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ENCINITAS	CA
2021-03-24	442-355	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	ESCONDIDO	CA
2021-03-11	442-354	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	BRAWLEY	CA
2021-03-10	442-377	0XXX1XXX4XXX6XXX7XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BAKER	CA
2021-03-10	442-789	0XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	WELDON	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.