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
2020-05-01	929-923	0–9 XXXall 10 · 7 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NWYRCYZN04	NY
2020-05-01	929-924	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NWYRCYZN09	NY
2020-05-01	929-925	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NWYRCYZN12	NY
2020-05-01	954-710	0–9 XXXall 10 · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CORAL SPG	FL
2020-05-01	954-799	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	FTLAUDERDL	FL
2020-04-30	332-233	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NWYRCYZN01	NY
2020-04-30	360-974	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WA	006F	OLYMPIA	WA
2020-04-30	417-688	1XXX6XXX8XXX · 3 holders which blocks →	FRACTEL, LLC	965H	LOWRY CITY	MO
2020-04-30	438-507	not yet reported which blocks →	Videotron Ltd.	328F	Montreal	—
2020-04-30	438-508	not yet reported which blocks →	Videotron Ltd.	328F	Montreal	—
2020-04-30	470-604	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - GA	8392	ATLANTA	GA
2020-04-30	561-564	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BOCA RATON	FL
2020-04-30	561-621	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	WPALMBEACH	FL
2020-04-30	607-317	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ELMIRA	NY
2020-04-30	743-207	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	WINSTN SAL	NC
2020-04-30	743-208	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	BURLINGTON	NC
2020-04-30	804-807	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	RICHMOND	VA
2020-04-30	980-310	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	CHARLOTTE	NC
2020-04-29	207-481	0–9 XXXall 10 · 7 holders which blocks →	BELL ATLANTIC MOBILE, INC	6386	BRUNSWICK	ME
2020-04-29	236-259	not yet reported which blocks →	Zayo Canada Inc.	8304	Vancouver	—
2020-04-29	260-268	0–9 XXXall 10 · 4 holders which blocks →	CSC WIRELESS, LLC	425J	FORT WAYNE	IN
2020-04-29	272-240	0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	MCADOO	PA
2020-04-29	309-612	0–9 XXXall 10 · 4 holders which blocks →	CSC WIRELESS, LLC	425J	BLOOMINGTN	IL
2020-04-29	321-341	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	MELBOURNE	FL
2020-04-29	437-253	not yet reported which blocks →	Zayo Canada Inc.	8304	Toronto	—
2020-04-29	469-817	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	SEAGOVILLE	TX
2020-04-29	469-949	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	DALLAS	TX
2020-04-29	561-467	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WPALMBEACH	FL
2020-04-29	574-766	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	FRACTEL, LLC	965H	CLAYPOOL	IN
2020-04-29	682-382	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	FORT WORTH	TX
2020-04-29	765-424	0XXX1XXX2XXX · 2 holders which blocks →	CSC WIRELESS, LLC	425J	RICHMOND	IN
2020-04-29	779-271	1XXX2XXX · 2 holders which blocks →	CSC WIRELESS, LLC	425J	LANARK	IL
2020-04-29	813-592	0–9 XXXall 10 · 3 holders which blocks →	CSC WIRELESS, LLC	425J	TAMPAWST	FL
2020-04-29	947-400	0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	W BLOOMFLD	MI
2020-04-29	971-376	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	CLATSKANIE	OR
2020-04-28	236-466	not yet reported which blocks →	TELUS	8086	Vancouver	—
2020-04-28	236-484	not yet reported which blocks →	TELUS	8086	Vancouver	—
2020-04-28	236-485	not yet reported which blocks →	TELUS	8086	Vancouver	—
2020-04-28	254-389	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KILLEEN	TX
2020-04-28	321-587	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	COCOA	FL
2020-04-28	365-874	not yet reported which blocks →	TELUS Integrated Communications	2782	Markham	—
2020-04-28	470-688	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	BREMEN	GA
2020-04-28	470-844	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	WINDER	GA
2020-04-28	470-933	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	CEDARTOWN	GA
2020-04-28	470-944	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	ATLANTA SO	GA
2020-04-28	470-966	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	ATLANTA NW	GA
2020-04-28	507-946	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	MARSHALL	MN
2020-04-28	639-973	not yet reported which blocks →	TELUS Integrated Communications	2782	Regina	—
2020-04-28	639-974	not yet reported which blocks →	TELUS Integrated Communications	2782	Saskatoon	—
2020-04-28	725-233	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV	6458	LAS VEGAS	NV

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.