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
2014-09-08	914-354	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	MOUNTKISCO	NY
2014-09-08	925-329	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ANTIOCH	CA
2014-09-05	470-263	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2014-09-05	470-273	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2014-09-05	585-491	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ROCHESTER	NY
2014-09-05	619-547	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CHULAVISTA	CA
2014-09-05	657-244	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HUNTITNBCH	CA
2014-09-05	716-367	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	BUFFALO	NY
2014-09-05	805-575	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	OXNARD	CA
2014-09-05	816-384	0–9 XXXall 10 · 4 holders which blocks →	AVID COMMUNICATIONS, LLC - MO	718D	KANSASCITY	MO
2014-09-05	912-324	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	BRUNSWICK	GA
2014-09-05	980-242	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	CHARLOTTE	NC
2014-09-05	980-251	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	GASTONIA	NC
2014-09-04	248-657	0–9 XXXall 10 · 5 holders which blocks →	GRID 4 COMMUNICATIONS, INC. - MI	9714	CLARKSTON	MI
2014-09-04	305-204	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	KEYS	FL
2014-09-04	385-241	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	PROVO	UT
2014-09-04	405-561	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	NORMAN	OK
2014-09-04	469-289	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CARROLLTON	TX
2014-09-04	480-453	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2014-09-04	587-469	not yet reported which blocks →	TELUS	8084	Edmonton	—
2014-09-04	587-470	not yet reported which blocks →	TELUS	8084	Calgary	—
2014-09-04	608-573	0–9 XXXall 10 · 5 holders which blocks →	UNITED STATES CELLULAR - WI	6274	POYNETTE	WI
2014-09-04	618-290	0XXX which blocks →	SHAWNEELEC, INC.	458H	ROSICLARE	IL
2014-09-04	646-864	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NWYRCYZN01	NY
2014-09-04	702-209	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LAS VEGAS	NV
2014-09-04	807-867	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Thunder Bay	—
2014-09-04	832-836	0–9 XXXall 10 · 2 holders which blocks →	SOUTHWESTERN BELL	9533	BAMMEL	TX
2014-09-03	415-993	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SNFC JUNPR	CA
2014-09-03	442-247	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CALIFORNCY	CA
2014-09-03	626-693	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ARCADIA	CA
2014-09-03	650-667	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SAN MATEO	CA
2014-09-03	657-246	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	BREA	CA
2014-09-03	669-243	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNJS WEST	CA
2014-09-03	858-291	0–9 XXXall 10 · 8 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LA JOLLA	CA
2014-09-03	909-552	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	UPLAND	CA
2014-09-03	920-702	not yet reported which blocks →	TDS METROCOM, LLC	520K	APPLETON	WI
2014-09-03	920-707	not yet reported which blocks →	TDS METROCOM, LLC	520K	APPLETON	WI
2014-09-03	949-353	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SADLBK VLY	CA
2014-09-03	951-397	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MURRIETA	CA
2014-09-02	202-794	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC	6402	WSHNGTNZN1	DC
2014-09-02	224-386	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	PALATINE	IL
2014-09-02	302-310	0–9 XXXall 10 · 3 holders which blocks →	VERIZON DELAWARE, INC.	9210	DOVER	DE
2014-09-02	313-939	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	DETROITZN2	MI
2014-09-02	385-419	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SALT LAKE	UT
2014-09-02	415-980	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SNFC JUNPR	CA
2014-09-02	424-344	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CMTN GRDN	CA
2014-09-02	480-524	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PHOENIX	AZ
2014-09-02	504-515	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - LA	153F	LAFITTE	LA
2014-09-02	516-744	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NASSAUZN04	NY
2014-09-02	612-406	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	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.