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
—	636-976	not yet reported which blocks →				MO
—	636-978	not yet reported which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	OFALLON	MO
—	636-980	0XXX6XXX7XXX which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	OFALLON	MO
—	636-987	0XXX1XXX3XXX4XXX5XXX9XXX · 6 holders which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	DEFIANCE	MO
—	636-988	not yet reported which blocks →				MO
—	640-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	NJ
—	640-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-700	not yet reported which blocks →				NJ
—	640-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-911	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NJ
—	640-950	not yet reported which blocks →				NJ
—	640-958	not yet reported which blocks →				NJ
—	640-959	not yet reported which blocks →				NJ
—	640-976	not yet reported which blocks →			XXXXXXXXXX	NJ
—	641-205	2XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	LOCAL TELEPHONE DATA SERVICES CORP.	2842	KNOXVILLE	IA
—	641-209	2XXX which blocks →	LOCAL TELEPHONE DATA SERVICES CORP.	2842	FAIRFIELD	IA
—	641-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IA
—	641-215	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	OSKALOOSA	IA
—	641-216	0–9 XXXall 10 · 10 holders which blocks →	UNITED STATES CELLULAR - IA	6266	CENTERVL	IA
—	641-217	0–9 XXXall 10 · 9 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	CHARITON	IA
—	641-218	0–9 XXXall 10 · 6 holders which blocks →	UNITED STATES CELLULAR - IA	6266	KNOXVILLE	IA
—	641-220	8XXX9XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	CHARLES CY	IA
—	641-223	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH	1167	OSCEOLA	IA
—	641-227	not yet reported which blocks →	PARTNER COMMUNICATIONS COOPERATIVE	1187	BAXTER	IA
—	641-228	0XXX which blocks →	QWEST CORPORATION	9631	CHARLES CY	IA
—	641-236	not yet reported which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH	1167	GRINNELL	IA
—	641-238	0XXX1XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	ONVOY, LLC - IA	221F	GENEVA	IA
—	641-257	7XXX8XXX9XXX which blocks →	QWEST CORPORATION	9631	CHARLES CY	IA
—	641-259	4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC.	1178	MONROE	IA
—	641-260	2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	GRINNELL	IA
—	641-269	not yet reported which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH	1167	GRINNELL	IA
—	641-293	not yet reported which blocks →	WINNEBAGO COOP. TEL. ASSN. - IA	1337	SO EMMONS	IA
—	641-297	not yet reported which blocks →	FMTC-I35, INC. D/B/A OMNITEL COMMUNICATIONS	1209	ST MARYS	IA
—	641-298	4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	AMUND	IA
—	641-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IA
—	641-312	not yet reported which blocks →				IA
—	641-315	1XXX4XXX5XXX · 3 holders which blocks →	OMNITEL COMMUNICATIONS, INC. - IA	3620	MARBLEROCK	IA
—	641-318	not yet reported which blocks →	T-MOBILE USA, INC.	6529	KNOXVILLE	IA
—	641-319	not yet reported which blocks →				IA
—	641-322	1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks →	FRONTIER COMMUNICATIONS OF IOWA, INC.	1127	CORNING	IA
—	641-324	5XXX6XXX7XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9631	NORTHWOOD	IA
—	641-325	1XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks →	UNITED STATES CELLULAR - IA	6266	GRINNELL	IA
—	641-326	3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	MONA	IA
—	641-329	0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	BAILEY	IA
—	641-330	none assigned yet which blocks →	UNITED STATES CELLULAR - IA	6266	CHARLES CY	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.