Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2005-01-14	250-859	not yet reported which blocks →	Bell Mobility	6574	Kelowna	—
2005-01-14	256-400	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	ALBERTVL	AL
2005-01-14	418-930	not yet reported which blocks →	Bell Mobility	6574	Quebec	—
2005-01-14	514-754	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2005-01-14	778-233	not yet reported which blocks →	Bell Mobility	6574	Vancouver	—
2005-01-14	780-228	not yet reported which blocks →	Bell Mobility	6574	Grande Prairie	—
2005-01-14	780-952	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Edmonton	—
2005-01-14	786-291	0–9 XXXall 10 · 2 holders which blocks →	FUSION CLOUD SERVICES, LLC	206A	PERRINE	FL
2005-01-14	812-655	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AURORA	IN
2005-01-14	817-584	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GLENDALE	TX
2005-01-14	912-315	not yet reported which blocks →	BRIGHTSPEED OF GEORGIA, LLC	0356	RICHMONDHL	GA
2005-01-14	912-435	not yet reported which blocks →	BRIGHTSPEED OF GEORGIA, LLC	0356	HINESVILLE	GA
2005-01-13	541-215	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	PENDLETON	OR
2005-01-13	670-878	not yet reported which blocks →	PTI PACIFICA INC.	387C	SAIPAN	—
2005-01-13	671-878	not yet reported which blocks →	PTI PACIFICA INC.	387C	AGANA	GU
2005-01-13	715-680	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MARATHON	WI
2005-01-13	864-372	0–9 XXXall 10 · 7 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	LIBERTY	SC
2005-01-13	864-402	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	PELZER	SC
2005-01-13	864-406	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	COWPENS	SC
2005-01-13	864-502	0–9 XXXall 10 · 9 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - SC	5258	PENDLETON	SC
2005-01-13	864-507	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	PICKENS	SC
2005-01-12	217-508	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHARLESTON	IL
2005-01-12	229-569	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	LAKELAND	GA
2005-01-12	270-412	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	OAK GROVE	KY
2005-01-12	307-275	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY	6566	CHEYENNE	WY
2005-01-12	509-480	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	YAKIMA	WA
2005-01-12	567-286	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ST MARYS	OH
2005-01-12	608-408	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	BRIGGSVL	WI
2005-01-12	620-290	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	GARDENCITY	KS
2005-01-12	630-398	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BARTLETT	IL
2005-01-12	646-918	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN01	NY
2005-01-12	702-377	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	OVERTON	NV
2005-01-12	702-424	0XXX4XXX6XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	UPPERMUDDY	NV
2005-01-12	719-293	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LEADVILLE	CO
2005-01-12	719-628	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CO	026D	MONTEVISTA	CO
2005-01-11	620-280	0XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LEOTI	KS
2005-01-10	205-503	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	BIRMINGHAM	AL
2005-01-10	256-676	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL	7469	ANNISTON	AL
2005-01-10	256-680	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL	7469	GADSDEN	AL
2005-01-10	309-716	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EASTMOLINE	IL
2005-01-10	405-213	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OKLA CITY	OK
2005-01-10	405-313	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OKLA CITY	OK
2005-01-10	405-420	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OKLA CITY	OK
2005-01-10	405-535	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OKLA CITY	OK
2005-01-10	405-639	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OKLA CITY	OK
2005-01-10	406-680	0XXX2XXX · 2 holders which blocks →	SAGEBRUSH CELLULAR, INC.	443B	MALTA	MT
2005-01-10	646-747	0–9 XXXwhole prefix which blocks →	VERIZON NEW YORK, INC.	9104	NWYRCYZN01	NY
2005-01-10	773-559	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN03	IL
2005-01-10	803-709	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BARNWELL	SC
2005-01-07	406-988	0XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MT	9415	DILLON	MT

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.