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
2021-04-02	937-796	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	FAIRBORN	OH
2021-04-02	938-867	0–9 XXXall 10 · 3 holders which blocks →	COMMIO, LLC	939H	HUNTSVILLE	AL
2021-04-02	938-930	0XXX1XXX3XXX4XXX5XXX · 3 holders which blocks →	ONVOY, LLC - AL	604E	STEVENSON	AL
2021-04-02	945-204	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	PROSPER	TX
2021-04-02	947-336	0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	NORTHVILLE	MI
2021-04-02	947-348	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	SOUTH LYON	MI
2021-04-02	980-350	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - NC	638E	ALTON	NC
2021-04-02	980-360	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NC	638E	LATTIMORE	NC
2021-04-02	980-366	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - NC	638E	LAWNDALE	NC
2021-04-02	980-370	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - NC	638E	LOCUST	NC
2021-04-02	986-203	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - ID	689F	BLUEBELL	ID
2021-04-01	218-578	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	IP HORIZON LLC	515J	DULUTH	MN
2021-04-01	218-810	0XXX4XXX5XXX7XXX8XXX which blocks →	ONVOY, LLC - MN	184D	DULUTH	MN
2021-04-01	225-409	0–9 XXXall 10 · 2 holders which blocks →	IP HORIZON LLC	515J	BATONROUGE	LA
2021-04-01	252-380	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	MOYOCK	NC
2021-04-01	252-895	0–9 XXXall 10 · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	ROCKYMOUNT	NC
2021-04-01	318-761	0–9 XXXall 10 · 3 holders which blocks →	IP HORIZON LLC	515J	SHREVEPORT	LA
2021-04-01	319-317	0–9 XXXall 10 · 5 holders which blocks →	IP HORIZON LLC	515J	CEDAR RPDS	IA
2021-04-01	320-448	0XXX1XXX8XXX9XXX · 2 holders which blocks →	IP HORIZON LLC	515J	ST CLOUD	MN
2021-04-01	320-910	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MN	184D	ST CLOUD	MN
2021-04-01	337-554	0–9 XXXall 10 · 2 holders which blocks →	IP HORIZON LLC	515J	LAFAYETTE	LA
2021-04-01	351-251	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	GROTON	MA
2021-04-01	351-253	2XXX3XXX4XXX5XXX · 2 holders which blocks →	ONVOY, LLC - MA	892D	ATHOLFKLN	MA
2021-04-01	351-353	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	HAVERHILL	MA
2021-04-01	351-354	0XXX1XXX3XXX5XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	LUNENBURG	MA
2021-04-01	351-357	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	ORANGE	MA
2021-04-01	351-358	0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	PEPPERELL	MA
2021-04-01	351-359	1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	ONVOY, LLC - MA	892D	SHIRLEY	MA
2021-04-01	351-371	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	WESTMINSTR	MA
2021-04-01	364-910	0XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - KY	896E	OWENSBORO	KY
2021-04-01	424-566	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	BEVERLYHLS	CA
2021-04-01	424-599	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	BEVERLYHLS	CA
2021-04-01	470-806	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2021-04-01	502-362	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - KY	896E	LOUISVILLE	KY
2021-04-01	504-387	0–9 XXXall 10 · 5 holders which blocks →	IP HORIZON LLC	515J	NEWORLEANS	LA
2021-04-01	507-792	0XXX1XXX8XXX9XXX · 3 holders which blocks →	IP HORIZON LLC	515J	ROCHESTER	MN
2021-04-01	507-910	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MN	184D	ROCHESTER	MN
2021-04-01	513-764	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CINCINNATI	OH
2021-04-01	515-671	0–9 XXXall 10 · 5 holders which blocks →	IP HORIZON LLC	515J	DES MOINES	IA
2021-04-01	551-842	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	JERSEYCITY	NJ
2021-04-01	559-910	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - CA	649C	GRANTGROVE	CA
2021-04-01	563-306	0–9 XXXall 10 · 3 holders which blocks →	IP HORIZON LLC	515J	DAVENPORT	IA
2021-04-01	607-466	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	ARKPORT	NY
2021-04-01	607-507	0–9 XXXall 10 · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	AVOCA	NY
2021-04-01	612-461	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2021-04-01	640-356	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	MEDFORD	NJ
2021-04-01	689-233	0–9 XXXall 10 · 3 holders which blocks →	QUALITY VOICE & DATA, INC.	548J	ORLANDO	FL
2021-04-01	712-564	0–9 XXXall 10 · 2 holders which blocks →	IP HORIZON LLC	515J	SIOUX CITY	IA
2021-04-01	720-868	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CO	026D	FORTLUPTON	CO
2021-04-01	763-910	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MN	184D	TWINCITIES	MN

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.