Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 21

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
2013-05-06	469-773	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	WAXAHACHIE	TX
2013-05-06	646-687	0–9 XXXwhole prefix which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN01	NY
2013-05-06	774-415	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	AUBURN	MA
2013-05-06	843-203	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CHARLESTON	SC
2013-05-02	306-308	not yet reported which blocks →	TELUS Mobility	8303	Estevan	—
2013-05-02	320-405	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HUTCHINSON	MN
2013-05-02	506-978	not yet reported which blocks →	TELUS Integrated Communications	2782	Saint John	—
2013-05-02	506-979	not yet reported which blocks →	TELUS Integrated Communications	2782	Sussex	—
2013-05-02	509-578	0–9 XXXall 10 · 7 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7173	RICHLAND	WA
2013-05-02	587-644	not yet reported which blocks →	TELUS Mobility	8301	Fort McMurray	—
2013-05-02	608-560	0XXX1XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	CENTRAL STATE TEL. CO	0859	NECEDAH	WI
2013-05-02	619-780	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SNDG SNDG	CA
2013-05-02	913-325	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	KS
2013-05-02	940-618	not yet reported which blocks →	CHOICE WIRELESS, LC	3533	WICHITAFLS	TX
2013-05-02	940-621	not yet reported which blocks →	CHOICE WIRELESS, LC	3533	BURKBURNTT	TX
2013-05-02	940-623	not yet reported which blocks →	CHOICE WIRELESS, LC	3533	BOWIE	TX
2013-05-02	940-625	not yet reported which blocks →	CHOICE WIRELESS, LC	3533	HENRIETTA	TX
2013-05-01	708-830	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2013-05-01	872-801	0XXX1XXX2XXX3XXX4XXX9XXX which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN08	IL
2013-05-01	872-803	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN10	IL
2013-04-30	224-408	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	WILMETTE	IL
2013-04-30	360-972	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - WA	483E	OLYMPIA	WA
2013-04-30	405-339	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ANADARKO	OK
2013-04-30	437-580	not yet reported which blocks →	TELUS Mobility	8303	Toronto	—
2013-04-30	470-247	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	ATLANTA NE	GA
2013-04-30	506-247	not yet reported which blocks →	TELUS Integrated Communications	2782	Fredericton	—
2013-04-30	506-830	not yet reported which blocks →	Rogers Communications Canada Inc. (Cable)	743B	Moncton	—
2013-04-30	513-517	0–9 XXXwhole prefix which blocks →	CINCINNATI BELL	9348	CINCINNATI	OH
2013-04-30	720-589	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2013-04-30	813-517	0–9 XXXall 10 · 5 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPACEN	FL
2013-04-30	819-706	not yet reported which blocks →	Bell Mobility	6574	Lebel-sur-Quevillon	—
2013-04-29	312-801	0–9 XXXall 10 · 6 holders which blocks →	NUSO, LLC	551G	CHICGOZN01	IL
2013-04-29	940-622	not yet reported which blocks →	CHOICE WIRELESS, LC	3533	BOWIE	TX
2013-04-27	830-243	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SEGUIN	TX
2013-04-27	956-258	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	PHARR	TX
2013-04-26	217-270	not yet reported which blocks →	COMCAST IP PHONE, LLC	318J	MT PULASKI	IL
2013-04-26	267-406	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	DOYLESTOWN	PA
2013-04-26	424-331	0–9 XXXall 10 · 9 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	INGLEWOOD	CA
2013-04-26	440-426	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	MIDDLEFLD	OH
2013-04-26	470-545	0–9 XXXwhole prefix which blocks →	COMCAST IP PHONE, LLC	318J	ATLANTA NE	GA
2013-04-26	484-408	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	ALLENTOWN	PA
2013-04-26	574-327	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	ELKHART	IN
2013-04-26	581-821	not yet reported which blocks →	TELUS Quebec	8083	Donnacona	—
2013-04-26	581-822	not yet reported which blocks →	TELUS Quebec	8083	Gaspe	—
2013-04-26	581-823	not yet reported which blocks →	TELUS Quebec	8083	Baie-Comeau (Hauterive)	—
2013-04-26	581-824	not yet reported which blocks →	TELUS Quebec	8083	Rimouski	—
2013-04-26	581-825	not yet reported which blocks →	TELUS Quebec	8083	Saint-Georges-de-Beauce	—
2013-04-26	581-826	not yet reported which blocks →	TELUS Quebec	8083	Sept-Iles	—
2013-04-26	587-933	not yet reported which blocks →	Bell West Inc.	2933	Calgary	—
2013-04-26	615-454	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	NASHVILLE	TN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.