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
—	641-937	8XXX9XXX · 2 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	AGENCY	IA
—	641-938	3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	BLAKESBURG	IA
—	641-939	not yet reported which blocks →	HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA	1297	ELDORA	IA
—	641-942	2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	MILO	IA
—	641-943	3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	ATTICA	IA
—	641-944	2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	BUSSEY	IA
—	641-946	2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	LOVILIA	IA
—	641-947	7XXX8XXX · 2 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	MELCHER	IA
—	641-948	not yet reported which blocks →	BLUE EARTH VALLEY TEL. CO.	1358	STEVENS	IA
—	641-949	2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	TRACY	IA
—	641-950	not yet reported which blocks →				IA
—	641-954	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	OTTUMWA	IA
—	641-958	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT		IA
—	641-959	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT		IA
—	641-969	2XXX6XXX8XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS	1170	EDDYVILLE	IA
—	641-976	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IA
—	641-980	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	OTTUMWA	IA
—	641-982	not yet reported which blocks →	FARMERS TEL. CO.	1177	NEW HAVEN	IA
—	641-983	not yet reported which blocks →	FARMERS TEL. CO.	1177	LTL CEDAR	IA
—	641-985	not yet reported which blocks →	FARMERS TEL. CO.	1177	RICEVILLE	IA
—	641-988	not yet reported which blocks →				IA
—	641-990	8XXX9XXX which blocks →	UNITED STATES CELLULAR - IA	6266	GRINNELL	IA
—	641-995	not yet reported which blocks →	FRONTIER COMMUNICATIONS OF IOWA, INC.	1127	SWALEDALE	IA
—	641-998	not yet reported which blocks →	FRONTIER COMMUNICATIONS OF IOWA, INC.	1127	THORNTON	IA
—	645-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	FL
—	645-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-700	not yet reported which blocks →				FL
—	645-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-911	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	645-950	not yet reported which blocks →				FL
—	645-958	not yet reported which blocks →				FL
—	645-959	not yet reported which blocks →				FL
—	645-976	not yet reported which blocks →				FL
—	646-201	0XXX1XXX2XXX3XXX6XXX8XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
—	646-202	0XXX1XXX3XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
—	646-204	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
—	646-205	not yet reported which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
—	646-206	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
—	646-207	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
—	646-208	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
—	646-209	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
—	646-210	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
—	646-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY
—	646-213	0XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
—	646-214	0XXX which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN01	NY

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.