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
—	319-653	not yet reported which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH	1167	WASHINGTON	IA
—	319-654	2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	QWEST CORPORATION	9631	CEDAR RPDS	IA
—	319-655	not yet reported which blocks →	MODERN COOP. TEL. CO.	1247	MILLERSBG	IA
—	319-656	not yet reported which blocks →	KALONA COOP. TEL. CO.	1214	KALONA	IA
—	319-657	0XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	AINSWORTH	IA
—	319-658	5XXX6XXX7XXX8XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	CRAWFODSVL	IA
—	319-660	7XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	WILLIAMSBG	IA
—	319-661	1XXX2XXX3XXX6XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	WILLIAMSBG	IA
—	319-662	0XXX2XXX3XXX6XXX7XXX · 4 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH	1167	CONROY	IA
—	319-664	not yet reported which blocks →	NORTH ENGLISH COOP. TEL. CO.	1257	NO ENGLISH	IA
—	319-665	not yet reported which blocks →	SOUTH SLOPE COOP. TEL. CO., INC.	1298	NO LIBERTY	IA
—	319-667	not yet reported which blocks →	MODERN COOP. TEL. CO.	1247	SO ENGLISH	IA
—	319-668	0XXX4XXX · 2 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH	1167	WILLIAMSBG	IA
—	319-679	not yet reported which blocks →	SHARON TEL. CO.	1293	HILLS	IA
—	319-683	not yet reported which blocks →	SHARON TEL. CO.	1293	SHARON CTR	IA
—	319-685	not yet reported which blocks →	COOPERATIVE TEL. CO.	1139	GUERNSEY	IA
—	319-688	not yet reported which blocks →	QWEST CORPORATION	9631	IOWA CITY	IA
—	319-694	6XXX7XXX8XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	BRIGHTON	IA
—	319-695	none assigned yet which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	PACKWOOD	IA
—	319-696	4XXX5XXX6XXX7XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	LOCKRIDGE	IA
—	319-698	0XXX3XXX5XXX6XXX8XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH	1167	W CHESTER	IA
—	319-700	not yet reported which blocks →				IA
—	319-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IA
—	319-721	none assigned yet which blocks →	UNITED STATES CELLULAR - IA	6266	CEDAR RPDS	IA
—	319-723	2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	NICHOLS	IA
—	319-725	2XXX3XXX5XXX7XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	CONESVILLE	IA
—	319-726	2XXX6XXX8XXX9XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	LETTS	IA
—	319-728	9XXX which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	COLUMBSJCT	IA
—	319-729	3XXX6XXX7XXX8XXX · 2 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	GRANDVIEW	IA
—	319-730	not yet reported which blocks →	PAETEC ITEL, LLC	829J	CEDAR RPDS	IA
—	319-731	not yet reported which blocks →	PAETEC ITEL, LLC	829J	CEDAR RPDS	IA
—	319-734	1XXX2XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	CEDAR RPDS	IA
—	319-738	4XXX7XXX9XXX · 3 holders which blocks →	MODERN COOP. TEL. CO.	1247	KESWICK	IA
—	319-739	not yet reported which blocks →	PAETEC ITEL, LLC	829J	CEDAR RPDS	IA
—	319-741	not yet reported which blocks →	SHELLSBURG CABLEVISION, INC.	4189	MARENGO	IA
—	319-743	2XXX5XXX8XXX · 2 holders which blocks →	QWEST CORPORATION	9631	CEDAR RPDS	IA
—	319-750	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	BURLINGTON	IA
—	319-752	not yet reported which blocks →	QWEST CORPORATION	9631	BURLINGTON	IA
—	319-753	not yet reported which blocks →	QWEST CORPORATION	9631	BURLINGTON	IA
—	319-754	not yet reported which blocks →	QWEST CORPORATION	9631	BURLINGTON	IA
—	319-758	not yet reported which blocks →	QWEST CORPORATION	9631	BURLINGTON	IA
—	319-759	none assigned yet which blocks →	UNITED STATES CELLULAR - IA	6266	BURLINGTON	IA
—	319-766	0XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	OAKVILLE	IA
—	319-768	6XXX7XXX8XXX9XXX · 2 holders which blocks →	QWEST CORPORATION	9631	BURLINGTON	IA
—	319-784	7XXX8XXX which blocks →	QWEST CORPORATION	9631	CEDAR RPDS	IA
—	319-786	not yet reported which blocks →	QWEST CORPORATION	9631	CEDAR RPDS	IA
—	319-790	none assigned yet which blocks →	PAETEC ITEL, LLC	829J	CEDAR RPDS	IA
—	319-795	9XXX which blocks →	UNITED STATES CELLULAR - IA	6266	KEOKUK	IA
—	319-796	not yet reported which blocks →	VAN BUREN TEL. CO., INC.	1319	STOCKPORT	IA
—	319-800	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	IOWA CITY	IA

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.