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
2016-05-09	236-532	not yet reported which blocks →	Navigata Communications Limited	078G	Creston	—
2016-05-09	236-533	not yet reported which blocks →	Navigata Communications Limited	078G	Donald	—
2016-05-09	236-534	not yet reported which blocks →	Navigata Communications Limited	078G	Elko	—
2016-05-09	236-535	not yet reported which blocks →	Navigata Communications Limited	078G	Field	—
2016-05-09	236-536	not yet reported which blocks →	Navigata Communications Limited	078G	Golden	—
2016-05-09	236-537	not yet reported which blocks →	Navigata Communications Limited	078G	Grasmere	—
2016-05-09	236-538	not yet reported which blocks →	Navigata Communications Limited	078G	Jaffray	—
2016-05-09	236-539	not yet reported which blocks →	Navigata Communications Limited	078G	Moyie	—
2016-05-09	236-540	not yet reported which blocks →	Navigata Communications Limited	078G	Parson	—
2016-05-09	236-541	not yet reported which blocks →	Navigata Communications Limited	078G	Spillimacheen	—
2016-05-09	236-542	not yet reported which blocks →	Navigata Communications Limited	078G	Wynndel	—
2016-05-09	236-543	not yet reported which blocks →	Navigata Communications Limited	078G	Yahk	—
2016-05-09	251-930	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	MOBILE	AL
2016-05-09	309-954	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	MACOMB	IL
2016-05-09	315-931	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC- NY	384C	MACDOUGALL	NY
2016-05-09	336-396	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NC	638E	RUFFIN	NC
2016-05-09	407-840	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WINTERPARK	FL
2016-05-09	407-861	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	KISSIMMEE	FL
2016-05-09	407-874	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF FLORIDA, LLC - FL	902E	KISSIMMEE	FL
2016-05-09	440-671	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	BRECKSVL	OH
2016-05-09	551-213	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - NJ	637C	RUTHERFORD	NJ
2016-05-09	571-549	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - VA	138E	BRADDOCK	VA
2016-05-09	717-714	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	YORK	PA
2016-05-09	720-512	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	DENVER	CO
2016-05-09	808-824	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - HI	9414	HONOLULU	HI
2016-05-09	828-392	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NC	638E	MAIDEN	NC
2016-05-09	857-971	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	CHARLESTN	MA
2016-05-09	862-289	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NJ	637C	CHATHAM	NJ
2016-05-09	954-488	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	FTLAUDERDL	FL
2016-05-09	970-632	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CO	026D	FT COLLINS	CO
2016-05-09	980-432	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SALISBURY	NC
2016-05-09	985-243	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - LA	749E	PIERREPART	LA
2016-05-06	236-523	not yet reported which blocks →	Navigata Communications Limited	078G	Canal Flats	—
2016-05-06	236-524	not yet reported which blocks →	Navigata Communications Limited	078G	Elkford	—
2016-05-06	236-525	not yet reported which blocks →	Navigata Communications Limited	078G	Fairmont Hot Springs	—
2016-05-06	317-676	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - IN	097D	MARIETTA	IN
2016-05-06	510-399	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	FRNK MAIN	CA
2016-05-06	716-294	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	JAMESTOWN	NY
2016-05-05	206-481	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9638	SEATTLE	WA
2016-05-05	208-519	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - ID	7558	BOISE	ID
2016-05-05	208-802	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - ID	689F	KOOSKIA	ID
2016-05-05	217-695	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	QUINCY	IL
2016-05-05	614-969	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HILLIARD	OH
2016-05-05	618-517	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	OLNEY	IL
2016-05-05	639-765	not yet reported which blocks →	Bell Mobility	6574	Bethune	—
2016-05-05	639-766	not yet reported which blocks →	Bell Mobility	6574	Broadview	—
2016-05-05	639-767	not yet reported which blocks →	Bell Mobility	6574	Craik	—
2016-05-05	639-768	not yet reported which blocks →	Bell Mobility	6574	Fort Qu'Appelle	—
2016-05-05	639-769	not yet reported which blocks →	Bell Mobility	6574	Lemberg	—
2016-05-05	639-770	not yet reported which blocks →	Bell Mobility	6574	Montmartre	—

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.