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
2016-11-30	929-407	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN15	NY
2016-11-30	971-978	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OR	750E	PORTLAND	OR
2016-11-29	224-426	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FOX LAKE	IL
2016-11-29	619-514	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SNDG SNDG	CA
2016-11-28	209-621	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	HUGHSON	CA
2016-11-28	236-862	not yet reported which blocks →	Fido Solutions Inc.	5643	Vancouver	—
2016-11-28	236-866	not yet reported which blocks →	Fido Solutions Inc.	5643	Vancouver	—
2016-11-28	236-867	not yet reported which blocks →	Fido Solutions Inc.	5643	Vancouver	—
2016-11-28	312-439	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICGOZN01	IL
2016-11-28	312-723	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICGOZN01	IL
2016-11-28	325-308	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX	7249	OZONA	TX
2016-11-28	812-977	0–9 XXXall 10 · 6 holders which blocks →	MILES COMMUNICATIONS INC. DBA ENHANCED TELECOMM CO	4857	LAWRENCEBG	IN
2016-11-28	904-862	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	JACKSONVL	FL
2016-11-23	207-560	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF MAINE, LLC- ME	925H	PORTLAND	ME
2016-11-23	248-832	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	NORTHVILLE	MI
2016-11-23	302-702	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	SEAFORD	DE
2016-11-23	385-261	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SALT LAKE	UT
2016-11-23	469-968	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LEWISVILLE	TX
2016-11-23	505-347	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ALBUQURQUE	NM
2016-11-23	587-840	not yet reported which blocks →	Iristel Inc.	154E	Bonnyville	—
2016-11-23	587-841	not yet reported which blocks →	Iristel Inc.	154E	Boyle	—
2016-11-23	587-842	not yet reported which blocks →	Iristel Inc.	154E	Drayton Valley	—
2016-11-23	720-462	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	DENVER	CO
2016-11-23	754-801	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	FTLAUDERDL	FL
2016-11-23	870-900	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	VIOLA	AR
2016-11-23	956-766	0–9 XXXall 10 · 4 holders which blocks →	FOREMOST TELECOMMUNICATIONS CORPORATION - TX	319D	MISSION	TX
2016-11-23	970-844	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	DURANGO	CO
2016-11-22	226-391	not yet reported which blocks →	Bell Mobility	6574	Tobermory	—
2016-11-22	267-742	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	DOYLESTOWN	PA
2016-11-22	320-470	0XXX1XXX5XXX8XXX9XXX · 2 holders which blocks →	MIDWEST NETWORK SOLUTIONS HUB LLC	973H	ST CLOUD	MN
2016-11-22	470-353	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA NE	GA
2016-11-22	470-595	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA NE	GA
2016-11-22	616-251	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	HOLLAND	MI
2016-11-22	620-472	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	MCC TELEPHONY LLC	593K	GRIDLEY	KS
2016-11-22	620-526	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	MCC TELEPHONY LLC	593K	LEROY	KS
2016-11-22	667-240	0–9 XXXall 10 · 5 holders which blocks →	BARR TELL USA, INC.	964H	COLUMBIA	MD
2016-11-22	667-967	0–9 XXXall 10 · 5 holders which blocks →	BARR TELL USA, INC.	964H	GLENBURNIE	MD
2016-11-22	980-271	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	CONCORD	NC
2016-11-22	980-290	0–9 XXXall 10 · 4 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	MONROE	NC
2016-11-21	206-503	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	SEATTLE	WA
2016-11-21	209-905	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	STOCKTON	CA
2016-11-21	213-431	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 07	CA
2016-11-21	224-287	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	NORTHBROOK	IL
2016-11-21	312-599	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	CHICGOZN01	IL
2016-11-21	424-399	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	TORRANCE	CA
2016-11-21	435-236	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	ST GEORGE	UT
2016-11-21	470-346	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	ATLANTA	GA
2016-11-21	518-908	0–9 XXXall 10 · 7 holders which blocks →	SLIC NETWORK SOLUTIONS, INC. - NY	193C	BRAINADSVL	NY
2016-11-21	616-268	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF MICHIGAN, LLC - MI	933G	GRANDHAVEN	MI
2016-11-21	651-427	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF MINNESOTA, LLC - MN	107F	STCROIXBCH	MN

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.