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
2016-06-27	346-757	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	STAFFORD	TX
2016-06-27	386-317	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	DAYTONABCH	FL
2016-06-27	405-847	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA OK - LLC	530C	BRITTON	OK
2016-06-27	438-921	not yet reported which blocks →	Fido Solutions Inc.	5643	Montreal	—
2016-06-27	469-866	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2016-06-27	530-807	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	NTAH THCY	CA
2016-06-27	602-632	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2016-06-27	628-203	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - CA	649C	STNSN-BLNS	CA
2016-06-27	669-206	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	SUNNYVALE	CA
2016-06-27	707-806	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SANTA ROSA	CA
2016-06-27	731-361	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BOLIVAR	TN
2016-06-27	731-603	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TN	124F	BETHEL SPG	TN
2016-06-27	810-432	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	PORT HURON	MI
2016-06-27	813-591	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	TAMPANTH	FL
2016-06-27	825-312	not yet reported which blocks →	Distributel	081E	Alder Flats	—
2016-06-27	825-313	not yet reported which blocks →	Distributel	081E	Beaumont	—
2016-06-27	825-314	not yet reported which blocks →	Distributel	081E	Breton	—
2016-06-27	825-315	not yet reported which blocks →	Distributel	081E	Calmar	—
2016-06-27	825-316	not yet reported which blocks →	Distributel	081E	Devon	—
2016-06-27	825-317	not yet reported which blocks →	Distributel	081E	Drayton Valley	—
2016-06-27	825-318	not yet reported which blocks →	Distributel	081E	Lodgepole	—
2016-06-27	825-319	not yet reported which blocks →	Distributel	081E	Nisku	—
2016-06-27	825-320	not yet reported which blocks →	Distributel	081E	Thorsby	—
2016-06-27	825-321	not yet reported which blocks →	Distributel	081E	Tomahawk	—
2016-06-27	825-322	not yet reported which blocks →	Distributel	081E	Warburg	—
2016-06-27	828-608	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	MORGANTON	NC
2016-06-27	848-253	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	EMILLSTONE	NJ
2016-06-27	864-763	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	BLACKSBURG	SC
2016-06-27	920-325	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WI	007F	WAUPUN	WI
2016-06-27	949-771	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	IRVINE	CA
2016-06-27	956-996	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	MISSION	TX
2016-06-24	209-309	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	GROVELAND	CA
2016-06-24	209-314	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	GALT	CA
2016-06-24	234-417	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AKRON	OH
2016-06-24	346-917	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	CHANNELVW	TX
2016-06-24	551-775	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	HACKENSACK	NJ
2016-06-24	574-402	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	SOUTH BEND	IN
2016-06-24	619-601	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CHULAVISTA	CA
2016-06-24	626-210	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	AZUSA	CA
2016-06-24	669-205	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - CA	649C	GILROY	CA
2016-06-24	707-710	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	SANTA ROSA	CA
2016-06-24	737-757	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	LEANDER	TX
2016-06-24	812-901	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	EVANSVILLE	IN
2016-06-24	843-954	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	FLORENCE	SC
2016-06-24	909-414	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - CA	649C	ARROWHEAD	CA
2016-06-23	202-816	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC	6402	WSHNGTNZN1	DC
2016-06-23	205-651	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	CALERA	AL
2016-06-23	213-212	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LSAN DA 07	CA
2016-06-23	240-904	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	LAUREL238	MD
2016-06-23	256-802	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	ROGERSVL	AL

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.