Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19

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
—	405-333	not yet reported which blocks →	POTTAWATOMIE TEL. CO.	2020	PEARSON	OK
—	405-335	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - OK	409F	WYNNEWOOD	OK
—	405-336	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OK	409F	WELEETKA	OK
—	405-337	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - OK	409F	WEWOKA	OK
—	405-338	0–9 XXXall 10 · 8 holders which blocks →	T-MOBILE USA, INC.	6529	STILLWATER	OK
—	405-340	not yet reported which blocks →	SOUTHWESTERN BELL	9533	EDMOND	OK
—	405-341	not yet reported which blocks →	SOUTHWESTERN BELL	9533	EDMOND	OK
—	405-342	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - OK	409F	ARCADIA	OK
—	405-344	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	DIBBLE	OK
—	405-345	1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OK	409F	EL RENO	OK
—	405-346	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OK	409F	GUTHRIE	OK
—	405-347	1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - OK	409F	HARRAH	OK
—	405-348	not yet reported which blocks →	SOUTHWESTERN BELL	9533	EDMOND	OK
—	405-349	1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OK	409F	LUTHER	OK
—	405-350	not yet reported which blocks →	SOUTHWESTERN BELL	9533	YUKON	OK
—	405-352	0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	MINCO	OK
—	405-353	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OK	409F	MUSTANG	OK
—	405-354	not yet reported which blocks →	SOUTHWESTERN BELL	9533	YUKON	OK
—	405-355	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OK	409F	NOBLE	OK
—	405-356	0XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	WELLSTON	OK
—	405-357	6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OK	409F	WHEATLAND	OK
—	405-358	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OK	409F	PIEDMONT	OK
—	405-359	not yet reported which blocks →	SOUTHWESTERN BELL	9533	EDMOND	OK
—	405-360	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NORMAN	OK
—	405-362	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OK	409F	TUTTLE	OK
—	405-364	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NORMAN	OK
—	405-366	not yet reported which blocks →	SOUTHWESTERN BELL	9533	NORMAN	OK
—	405-368	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	KINGFISHER	OK
—	405-370	2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	OKLA CITY	OK
—	405-372	not yet reported which blocks →	SOUTHWESTERN BELL	9533	STILLWATER	OK
—	405-373	6XXX7XXX8XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	PIEDMONT	OK
—	405-374	0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	MAUD	OK
—	405-375	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	KINGFISHER	OK
—	405-376	not yet reported which blocks →	SOUTHWESTERN BELL	9533	MUSTANG	OK
—	405-377	9XXX which blocks →	SOUTHWESTERN BELL	9533	STILLWATER	OK
—	405-378	1XXX2XXX4XXX5XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	MOORE	OK
—	405-379	0XXX which blocks →	SOUTHWESTERN BELL	9533	HOLDENVL	OK
—	405-380	1XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	SEMINOLE	OK
—	405-381	0XXX6XXX7XXX8XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	TUTTLE	OK
—	405-382	not yet reported which blocks →	SOUTHWESTERN BELL	9533	SEMINOLE	OK
—	405-383	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	WANETTE	OK
—	405-384	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	BETHANY	OK
—	405-385	1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	STILLWATER	OK
—	405-386	not yet reported which blocks →	MCLOUD TEL. CO.	2006	STELLA	OK
—	405-387	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	NEWCASTLE	OK
—	405-388	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OKLA CITY	OK
—	405-389	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - OK	409F	WETUMKA	OK
—	405-390	7XXX which blocks →	OKLAHOMA COMMUNICATION SYSTEM, INC.	1984	CHOCTAW	OK
—	405-391	not yet reported which blocks →	MCLOUD TEL. CO.	2006	NEWALLA	OK
—	405-392	not yet reported which blocks →	PIONEER TEL. COOP., INC.	2018	NEWCASTLE	OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.