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
2012-03-13	587-269	not yet reported which blocks →	Shaw Telecom Inc.	497E	Sherwood Park	—
2012-03-13	587-273	not yet reported which blocks →	Shaw Telecom Inc.	497E	Red Deer	—
2012-03-13	587-274	not yet reported which blocks →	Shaw Telecom Inc.	497E	Leduc	—
2012-03-13	587-276	not yet reported which blocks →	Shaw Telecom Inc.	497E	Fort McMurray	—
2012-03-13	587-285	not yet reported which blocks →	Shaw Telecom Inc.	497E	Fort Saskatchewan	—
2012-03-13	587-286	not yet reported which blocks →	Shaw Telecom Inc.	497E	Spruce Grove	—
2012-03-13	587-289	not yet reported which blocks →	Shaw Telecom Inc.	497E	Medicine Hat	—
2012-03-13	587-290	not yet reported which blocks →	Shaw Telecom Inc.	497E	St. Albert	—
2012-03-13	587-425	not yet reported which blocks →	Shaw Telecom Inc.	497E	Lethbridge	—
2012-03-13	587-523	not yet reported which blocks →	Shaw Telecom Inc.	497E	Edmonton	—
2012-03-13	778-346	not yet reported which blocks →	Shaw Telecom Inc.	497E	Campbell River	—
2012-03-13	778-418	not yet reported which blocks →	Shaw Telecom Inc.	497E	Willow Point	—
2012-03-13	778-419	not yet reported which blocks →	Shaw Telecom Inc.	497E	Port Alberni	—
2012-03-13	802-582	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ST ALBANS	VT
2012-03-13	914-327	0–9 XXXall 10 · 4 holders which blocks →	CSC VOICE, LLC	612K	WSCHSTZN01	NY
2012-03-13	917-480	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN12	NY
2012-03-13	918-904	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	TULSA	OK
2012-03-12	202-815	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC	6402	WSHNGTNZN1	DC
2012-03-12	206-209	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WA	483E	SEATTLE	WA
2012-03-12	216-209	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CLEVELAND	OH
2012-03-12	234-205	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	AKRON	OH
2012-03-12	404-565	0–9 XXXall 10 · 4 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2012-03-12	404-860	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2012-03-12	412-430	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	PTTSBGZON1	PA
2012-03-12	513-704	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CINCINNATI	OH
2012-03-12	517-258	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	HOWELL	MI
2012-03-12	614-649	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	COLUMBUS	OH
2012-03-12	717-208	0–9 XXXall 10 · 5 holders which blocks →	D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE	6846	LANCASTER	PA
2012-03-12	740-562	0–9 XXXall 10 · 5 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	ZANESVILLE	OH
2012-03-12	818-875	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SUNLD TJNG	CA
2012-03-12	843-510	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	WALTERBORO	SC
2012-03-12	859-303	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	LEXINGTON	KY
2012-03-12	906-212	0–9 XXXall 10 · 7 holders which blocks →	UPPER PENINSULA TELEPHONE COMPANY - MI	746G	ESCANABA	MI
2012-03-12	907-515	7XXX which blocks →	GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION	6872	HAINES	AK
2012-03-12	907-815	7XXX which blocks →	GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION	6872	SKAGWAY	AK
2012-03-12	937-204	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DAYTON	OH
2012-03-09	438-538	not yet reported which blocks →	Fibernetics Corporation	464D	Pointe-Claire	—
2012-03-09	438-638	not yet reported which blocks →	Fibernetics Corporation	464D	Ile-Perrot	—
2012-03-09	579-490	not yet reported which blocks →	TELUS Mobility	8303	Vaudreuil	—
2012-03-09	587-283	not yet reported which blocks →	TELUS Mobility	8301	Gift Lake	—
2012-03-09	604-372	not yet reported which blocks →	Shaw Telecom Inc.	497E	Cloverdale	—
2012-03-09	631-480	0–9 XXXall 10 · 4 holders which blocks →	TELENGY L.L.C. - NY	473G	AMITYVILLE	NY
2012-03-09	646-561	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	NWYRCYZN01	NY
2012-03-09	778-775	not yet reported which blocks →	Fibernetics Corporation	464D	Vancouver	—
2012-03-09	819-282	not yet reported which blocks →	Fibernetics Corporation	464D	Ottawa-Hull	—
2012-03-09	917-391	0–9 XXXall 10 · 5 holders which blocks →	TELENGY L.L.C. - NY	473G	NWYRCYZN08	NY
2012-03-09	929-223	0–9 XXXall 10 · 4 holders which blocks →	TELENGY L.L.C. - NY	473G	NWYRCYZN04	NY
2012-03-09	929-243	0–9 XXXall 10 · 5 holders which blocks →	CSC VOICE, LLC	612K	NWYRCYZN05	NY
2012-03-08	306-500	not yet reported which blocks →	Iristel Inc.	154E	Saskatoon	—
2012-03-08	405-662	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	OKLA CITY	OK

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.