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
2014-10-28	639-822	not yet reported which blocks →	SaskTel Mobility	9868	Neilburg	—
2014-10-28	639-832	not yet reported which blocks →	SaskTel Mobility	9868	Ile-A-La-Crosse	—
2014-10-28	639-836	not yet reported which blocks →	SaskTel Mobility	9868	Loon Lake	—
2014-10-28	639-844	not yet reported which blocks →	SaskTel Mobility	9868	Turtleford	—
2014-10-28	646-604	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
2014-10-28	651-505	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	STCROIXBCH	MN
2014-10-28	702-931	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NV	9145	LAS VEGAS	NV
2014-10-28	702-980	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	LAS VEGAS	NV
2014-10-28	717-690	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	LANCASTER	PA
2014-10-28	720-735	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CO	026D	KEENESBURG	CO
2014-10-28	786-682	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2014-10-28	806-306	not yet reported which blocks →	AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX	0132	HARTLEY	TX
2014-10-28	845-272	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	ELLENVILLE	NY
2014-10-28	939-439	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	SANTURCE	PR
2014-10-27	224-714	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	EVANSTON	IL
2014-10-27	234-719	0–9 XXXall 10 · 5 holders which blocks →	XO OHIO, INC.	7520	YOUNGSTOWN	OH
2014-10-27	249-350	not yet reported which blocks →	Bragg Communications Inc.	421G	Sudbury	—
2014-10-27	249-351	not yet reported which blocks →	Bragg Communications Inc.	421G	Timmins	—
2014-10-27	272-268	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	WILKSBARRE	PA
2014-10-27	312-487	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	CHICGOZN01	IL
2014-10-27	331-253	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	LEMONT	IL
2014-10-27	442-615	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	OCSD OCSD	CA
2014-10-27	484-649	0–9 XXXwhole prefix which blocks →	CTSI, INC. - PA	7513	ALLENTOWN	PA
2014-10-27	506-294	not yet reported which blocks →	Bragg Communications Inc.	421G	Moncton	—
2014-10-27	510-361	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 TELECOM OF CALIFORNIA, LP - CA	7718	HAYWARD	CA
2014-10-27	570-866	0–9 XXXall 10 · 6 holders which blocks →	FINGER LAKES TECHNOLOGIES GROUP, INC. - PA	464H	SCRANTON	PA
2014-10-27	619-919	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NATIONALCY	CA
2014-10-27	626-522	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	EL MONTE	CA
2014-10-27	650-797	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SSNFRNCSCO	CA
2014-10-27	657-282	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	ORANGE	CA
2014-10-27	709-314	not yet reported which blocks →	Bragg Communications Inc.	421G	St. John's	—
2014-10-27	716-495	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	BUFFALO	NY
2014-10-27	719-888	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CO	026D	COLORDOSPG	CO
2014-10-27	867-730	not yet reported which blocks →	Bell Mobility	6574	Dawson City	—
2014-10-27	951-523	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 TELECOM OF CALIFORNIA, LP - CA	7718	CORONA	CA
2014-10-27	954-487	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	FTLAUDERDL	FL
2014-10-27	984-528	0–9 XXXall 10 · 5 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	CHAPELHILL	NC
2014-10-24	216-417	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CLEVELAND	OH
2014-10-24	224-479	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	NORTHBROOK	IL
2014-10-24	224-480	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WAUKEGAN	IL
2014-10-24	224-503	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	NORTHBROOK	IL
2014-10-24	320-408	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	PLATO	MN
2014-10-24	385-445	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	KAYSVILLE	UT
2014-10-24	415-212	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNFC CNTRL	CA
2014-10-24	469-660	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	GRANDPRARI	TX
2014-10-24	510-309	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ELSBR-PINL	CA
2014-10-24	512-361	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BUDA	TX
2014-10-24	520-658	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	TUCSON	AZ
2014-10-24	551-313	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CLIFFSIDE	NJ
2014-10-24	571-589	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	DALE CITY	VA

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.