Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 — NPA 580

ONVOY, LLC - OK 1

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
—	580-667	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	TIPTON	OK
—	580-668	4XXX7XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	WILSON	OK
—	580-669	0XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	SOUTHWESTERN BELL	9533	GLENCOE	OK
—	580-673	not yet reported which blocks →	WINDSTREAM OKLAHOMA, INC.	1965	PIKE CITY	OK
—	580-674	not yet reported which blocks →	WINDSTREAM OKLAHOMA, INC.	1965	DILL CITY	OK
—	580-675	4XXX which blocks →	SOUTHWEST OKLAHOMA TEL. CO.	2025	VINSON	OK
—	580-676	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	GOULD	OK
—	580-677	2XXX5XXX which blocks →	SOUTHWESTERN BELL	9533	MADILL	OK
—	580-678	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LAWTON	OK
—	580-679	none assigned yet which blocks →	SOUTHWEST OKLAHOMA TEL. CO.	2025	DUKE	OK
—	580-681	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - OK	409F	PERRY	OK
—	580-683	not yet reported which blocks →	SOUTHWEST OKLAHOMA TEL. CO.	2025	REED	OK
—	580-684	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	HUNTER	OK
—	580-687	none assigned yet which blocks →	SANTA ROSA TEL COOP INC	2141	ELMER	OK
—	580-688	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	HOLLIS	OK
—	580-689	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	MAY	OK
—	580-694	not yet reported which blocks →	KANOKLA TEL ASSN	1788	MANCHESTER	OK
—	580-695	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LAWTON	OK
—	580-696	not yet reported which blocks →	ELKHART TEL. CO., INC.	1764	SO ELKHART	OK
—	580-697	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	QUINLAN	OK
—	580-698	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	FARGO	OK
—	580-700	not yet reported which blocks →				OK
—	580-704	none assigned yet which blocks →	UNITED STATES CELLULAR - OK	6272	LAWTON	OK
—	580-705	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LEEDEY	OK
—	580-708	not yet reported which blocks →	PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC.	235C	BROKEN BOW	OK
—	580-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	OK
—	580-716	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PONCA CITY	OK
—	580-718	6XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	PONCA CITY	OK
—	580-723	0XXX2XXX3XXX7XXX8XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	RED ROCK	OK
—	580-724	0XXX8XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	MORRISON	OK
—	580-725	0XXX2XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	BILLINGS	OK
—	580-726	0XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	HOBART	OK
—	580-727	none assigned yet which blocks →	PIONEER TEL. COOP., INC.	2018	SELMAN	OK
—	580-730	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	LAWTON	OK
—	580-735	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	BUFFALO	OK
—	580-738	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	SOUTHWESTERN BELL	9533	HEADRICK	OK
—	580-739	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HOLLIS	OK
—	580-743	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	HUGO	OK
—	580-745	0XXX1XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	DURANT	OK
—	580-746	not yet reported which blocks →	VALLIANT TEL. CO.	2032	MILLERTON	OK
—	580-753	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	AMES	OK
—	580-754	0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	GUYMON	OK
—	580-757	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	SOUTHWESTERN BELL	9533	RYAN	OK
—	580-758	0XXX2XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	WAUKOMIS	OK
—	580-759	0XXX4XXX7XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	STRATFORD	OK
—	580-761	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	PONCA CITY	OK
—	580-762	not yet reported which blocks →	SOUTHWESTERN BELL	9533	PONCA CITY	OK
—	580-763	none assigned yet which blocks →	SOUTHWESTERN BELL	9533	PONCA CITY	OK
—	580-764	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	CHESTER	OK
—	580-765	not yet reported which blocks →	SOUTHWESTERN BELL	9533	PONCA CITY	OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.