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
2003-06-02	956-260	not yet reported which blocks →	SMARTCOM TELEPHONE, LLC	4866	MERCEDES	TX
2003-05-30	217-550	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CHAMPAURBN	IL
2003-05-30	318-430	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	HORNBECK	LA
2003-05-30	318-498	4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	WINNSBORO	LA
2003-05-30	318-499	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MER ROUGE	LA
2003-05-30	318-501	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	EPPS	LA
2003-05-30	318-502	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	COLUMBIA	LA
2003-05-30	318-510	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA	6505	SHREVEPORT	LA
2003-05-30	318-521	1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA	6505	NATCHITCHS	LA
2003-05-30	906-236	7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MARQUETTE	MI
2003-05-30	909-728	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FONTANA	CA
2003-05-30	909-831	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	S BERNDINO	CA
2003-05-30	918-314	3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	GROVE	OK
2003-05-30	918-315	3XXX4XXX6XXX8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	SALLISAW	OK
2003-05-30	918-316	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TAHLEQUAH	OK
2003-05-30	951-500	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	RIVERSIDE	CA
2003-05-29	320-335	1XXX2XXX · 2 holders which blocks →	ONVOY, LLC - MN	184D	ALEXANDRIA	MN
2003-05-29	334-550	0XXX1XXX2XXX3XXX4XXX7XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	NEWVILLE	AL
2003-05-29	580-516	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	FELTWHLESS	OK
2003-05-29	580-517	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	BOISE CITY	OK
2003-05-29	580-518	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	KEYES	OK
2003-05-29	580-519	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	GRIGGS	OK
2003-05-29	580-520	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	EVA	OK
2003-05-29	580-521	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	TEXHOMA	OK
2003-05-29	580-522	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	HOOKER	OK
2003-05-29	580-523	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	TYRONE	OK
2003-05-29	580-524	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	HARDESTY	OK
2003-05-29	580-525	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	BALKO	OK
2003-05-29	580-527	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	BEAVER	OK
2003-05-29	580-528	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	FLORIS	OK
2003-05-29	580-539	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	TURPIN	OK
2003-05-29	580-552	not yet reported which blocks →	PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC.	468B	LOGAN	OK
2003-05-29	850-868	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	HAVANA	FL
2003-05-29	850-869	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MADISON	FL
2003-05-28	325-280	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ABILENE	TX
2003-05-28	352-551	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	EUSTIS	FL
2003-05-28	432-230	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TERMINAL	TX
2003-05-28	434-563	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	EMPORIA	VA
2003-05-28	806-282	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AMARILLO	TX
2003-05-27	318-488	3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA	6505	DELHI	LA
2003-05-27	605-408	4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HARISBGTEA	SD
2003-05-27	785-285	3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	SABETHA	KS
2003-05-27	785-294	3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	SENECA	KS
2003-05-27	815-619	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	ROCKTON	IL
2003-05-27	815-696	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	ROSCOE	IL
2003-05-27	815-890	not yet reported which blocks →	AERO NORTH COMMUNICATIONS, INC. - IL	443F	NEWMILFORD	IL
2003-05-27	989-304	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	EDMORE	MI
2003-05-26	905-817	not yet reported which blocks →	Bell Canada	8051	Streetsville	—
2003-05-23	337-371	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	LAFAYETTE	LA
2003-05-22	318-407	2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA	6505	COLFAX	LA

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.