Recent prefix assignments

2 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 636

ONVOY, LLC - MO 2

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
—	636-239	not yet reported which blocks →	SOUTHWESTERN BELL	9533	WASHINGTON	MO
—	636-240	not yet reported which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	OFALLON	MO
—	636-246	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MO	093F	ST CHARLES	MO
—	636-248	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	ST PETERS	MO
—	636-250	1XXX2XXX8XXX · 2 holders which blocks →	NEW FLORENCE TEL. CO., INC.	1927	ORCHARDFRM	MO
—	636-251	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	FORISTELL	MO
—	636-255	4XXX8XXX9XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	ST CHARLES	MO
—	636-256	not yet reported which blocks →	SOUTHWESTERN BELL	9533	MANCHESTER	MO
—	636-257	0XXX7XXX which blocks →	SOUTHWESTERN BELL	9533	PACIFIC	MO
—	636-258	2XXX8XXX · 2 holders which blocks →	NEW FLORENCE TEL. CO., INC.	1927	ORCHARDFRM	MO
—	636-262	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	CHESTERFLD	MO
—	636-271	4XXX5XXX which blocks →	SOUTHWESTERN BELL	9533	PACIFIC	MO
—	636-272	not yet reported which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	OFALLON	MO
—	636-273	2XXX7XXX8XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	POND	MO
—	636-274	6XXX8XXX which blocks →	SOUTHWESTERN BELL	9533	CEDAR HILL	MO
—	636-278	0XXX9XXX · 2 holders which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	ST PETERS	MO
—	636-279	0XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	ST PETERS	MO
—	636-281	6XXX which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	OFALLON	MO
—	636-282	8XXX which blocks →	SOUTHWESTERN BELL	9533	MAXVILLE	MO
—	636-285	2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	CEDAR HILL	MO
—	636-287	0XXX2XXX4XXX7XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	MAXVILLE	MO
—	636-288	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ST CHARLES	MO
—	636-295	3XXX4XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	TROY	MO
—	636-296	not yet reported which blocks →	SOUTHWESTERN BELL	9533	MAXVILLE	MO
—	636-297	3XXX4XXX8XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	WARRENTON	MO
—	636-299	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CHESTERFLD	MO
—	636-305	not yet reported which blocks →	SOUTHWESTERN BELL	9533	FENTON	MO
—	636-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MO
—	636-314	not yet reported which blocks →				MO
—	636-318	0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	TROY	MO
—	636-320	not yet reported which blocks →	SPOK, INC.	6630	HARVESTER	MO
—	636-321	1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PAETEC ITEL, LLC	829J	MAXVILLE	MO
—	636-324	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MO	093F	POND	MO
—	636-326	0XXX which blocks →	SOUTHWESTERN BELL	9533	FENTON	MO
—	636-327	not yet reported which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	WENTZVILLE	MO
—	636-328	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	ST CHARLES	MO
—	636-332	not yet reported which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	WENTZVILLE	MO
—	636-333	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MO	093F	MAXVILLE	MO
—	636-336	1XXX2XXX6XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	HARVESTER	MO
—	636-337	2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	DE SOTO	MO
—	636-338	0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	HAWK POINT	MO
—	636-343	not yet reported which blocks →	SOUTHWESTERN BELL	9533	FENTON	MO
—	636-345	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	HARVESTER	MO
—	636-346	0XXX which blocks →	T-MOBILE USA, INC.	6529	CHESTERFLD	MO
—	636-349	not yet reported which blocks →	SOUTHWESTERN BELL	9533	FENTON	MO
—	636-352	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	ST CHARLES	MO
—	636-356	2XXX3XXX6XXX8XXX · 4 holders which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	MOSCOW ML	MO
—	636-357	6XXX7XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WENTZVILLE	MO
—	636-358	7XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TROY	MO
—	636-359	5XXX6XXX8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WARRENTON	MO

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.