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
2020-03-23	326-236	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	FARMERSVL	OH
2020-03-23	326-266	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OH	464C	RAINSBORO	OH
2020-03-23	326-626	0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	MEDWAY	OH
2020-03-23	337-487	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	LEESVILLE	LA
2020-03-23	437-323	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2020-03-23	437-362	not yet reported which blocks →	TELUS Mobility	646F	Toronto	—
2020-03-23	437-363	not yet reported which blocks →	TELUS Mobility	646F	Toronto	—
2020-03-23	438-459	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2020-03-23	618-260	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	HOYLETON	IL
2020-03-23	762-248	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	HAMILTON	GA
2020-03-23	774-428	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BROCKTON	MA
2020-03-23	857-358	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	QUINCY	MA
2020-03-20	385-366	0–9 XXXwhole prefix which blocks →	FIRSTDIGITAL COMMUNICATIONS, LLC	716D	MIDVALE	UT
2020-03-20	619-650	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	CHULAVISTA	CA
2020-03-20	659-465	0XXX2XXX3XXX8XXX · 3 holders which blocks →	FRACTEL, LLC	965H	VINCENT	AL
2020-03-20	707-850	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LOWER LAKE	CA
2020-03-20	830-280	0XXX1XXX2XXX8XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	SABINA	TX
2020-03-19	240-721	0–9 XXXall 10 · 3 holders which blocks →	VERIZON MARYLAND, INC.	9212	WSHNGTNZN5	MD
2020-03-19	470-579	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	ATLANTA	GA
2020-03-19	657-427	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	GARDEN GRV	CA
2020-03-19	872-262	0–9 XXXall 10 · 5 holders which blocks →	AT&T - LOCAL	7421	CHICGOZN09	IL
2020-03-18	253-316	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	TACOMAWVLY	WA
2020-03-18	309-608	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	SAN JOSE	IL
2020-03-18	424-445	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	REDONDO	CA
2020-03-18	440-648	6XXX8XXX · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	ORWELL	OH
2020-03-18	442-316	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VTVL HSPR	CA
2020-03-18	475-348	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	DANBURY	CT
2020-03-18	585-515	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	HILTON	NY
2020-03-18	657-426	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2020-03-18	765-297	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	CLARKSHILL	IN
2020-03-18	765-394	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	THORNTOWN	IN
2020-03-18	951-521	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	RIVERSIDE	CA
2020-03-17	236-544	not yet reported which blocks →	Videotron Ltd.	383F	Nanaimo	—
2020-03-17	236-768	not yet reported which blocks →	Videotron Ltd.	383F	Vernon	—
2020-03-17	236-792	not yet reported which blocks →	Videotron Ltd.	383F	Prince George	—
2020-03-17	585-508	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	HOLCOMB	NY
2020-03-17	786-755	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	MIAMI	FL
2020-03-16	236-505	not yet reported which blocks →	Videotron Ltd.	383F	Cranbrook	—
2020-03-16	236-793	not yet reported which blocks →	Videotron Ltd.	383F	Comox	—
2020-03-16	236-854	not yet reported which blocks →	Videotron Ltd.	383F	Campbell River	—
2020-03-16	404-967	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2020-03-16	417-512	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	SPRINGFLD	MO
2020-03-16	470-574	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	GRIFFIN	GA
2020-03-16	606-313	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - KY	896E	PIKEVILLE	KY
2020-03-16	807-546	not yet reported which blocks →	TBayTel	988H	Keewatin	—
2020-03-16	825-594	not yet reported which blocks →	Videotron Ltd.	383F	Lethbridge	—
2020-03-16	825-706	not yet reported which blocks →	Videotron Ltd.	383F	Red Deer	—
2020-03-13	218-518	0XXX1XXX2XXX8XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	CASS LAKE	MN
2020-03-13	218-519	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	TOFTE	MN
2020-03-13	236-458	not yet reported which blocks →	Videotron Ltd.	383F	Abbotsford	—

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.