Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 23

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

Quick find in this area code:

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2016-08-16	814-851	2XXX3XXX4XXX5XXX9XXX · 2 holders which blocks →	WINDSTREAM PENNSYLVANIA, INC.	0176	SHEFFIELD	PA
2016-08-16	843-951	0–9 XXXall 10 · 5 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL	9417	HARTSVILLE	SC
2016-08-15	209-592	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LOS BANOS	CA
2016-08-15	213-238	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LSAN DA 01	CA
2016-08-15	248-466	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	PONTIAC	MI
2016-08-15	254-417	0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW	1181	WHITNEY	TX
2016-08-15	442-327	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	VICTORVL	CA
2016-08-15	458-256	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	BEND	OR
2016-08-15	480-476	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2016-08-15	518-816	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	ALBANY	NY
2016-08-15	570-393	0–9 XXXall 10 · 7 holders which blocks →	WINDSTREAM PENNSYLVANIA, INC.	0176	LANSFORD	PA
2016-08-15	585-404	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	HENRIETTA	NY
2016-08-15	606-428	0–9 XXXall 10 · 4 holders which blocks →	POWERTEL KENTUCKY LICENSES, INC.	365C	WILLIAMSBG	KY
2016-08-15	657-339	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	HUNTITNBCH	CA
2016-08-15	775-683	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	RENO	NV
2016-08-15	845-317	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	MARLBORO	NY
2016-08-15	856-259	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	WILLIAMSTN	NJ
2016-08-15	862-292	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	VERONA	NJ
2016-08-15	929-398	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	NWYRCYZN10	NY
2016-08-15	929-425	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN14	NY
2016-08-15	929-443	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN12	NY
2016-08-15	940-313	3XXX6XXX9XXX · 3 holders which blocks →	VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW	1163	MUNDAY	TX
2016-08-15	940-316	1XXX6XXX9XXX · 3 holders which blocks →	VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW	1163	KNOX CITY	TX
2016-08-15	940-401	1XXX2XXX4XXX9XXX · 2 holders which blocks →	VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW	1163	HOLLIDAY	TX
2016-08-15	940-402	1XXX9XXX · 2 holders which blocks →	VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW	1163	HASKELL	TX
2016-08-15	951-414	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	TEMECULA	CA
2016-08-15	971-432	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	WOODBURN	OR
2016-08-15	985-551	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA	6505	HAMMOND	LA
2016-08-12	207-261	0XXX1XXX2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - ME	882G	MILLINOCKT	ME
2016-08-12	312-414	0–9 XXXall 10 · 5 holders which blocks →	VONAGE AMERICA LLC	197D	CHICGOZN01	IL
2016-08-12	334-802	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	HURTSBORO	AL
2016-08-12	414-252	0–9 XXXall 10 · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	MILWAUKZN1	WI
2016-08-12	442-207	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	FALLBROOK	CA
2016-08-12	470-351	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA	7435	ATLANTA	GA
2016-08-12	470-598	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	ROCKMART	GA
2016-08-12	502-450	0–9 XXXall 10 · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	LOUISVILLE	KY
2016-08-12	515-552	0–9 XXXall 10 · 7 holders which blocks →	UNITED STATES CELLULAR - IA	6266	INDIANOLA	IA
2016-08-12	619-404	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	EL CAJON	CA
2016-08-12	660-858	0XXX1XXX5XXX8XXX9XXX · 5 holders which blocks →	WINDSTREAM MISSOURI, INC.	1885	FLORENCE	MO
2016-08-12	747-257	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	GLENDALE	CA
2016-08-12	802-397	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ST JOHNSBY	VT
2016-08-12	805-554	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	SANTAMARIA	CA
2016-08-12	857-410	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	CHARLESTN	MA
2016-08-12	912-274	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	LYONS	GA
2016-08-12	949-405	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	IRVINE	CA
2016-08-11	253-287	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	TACOMA	WA
2016-08-11	437-991	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2016-08-11	437-992	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2016-08-11	437-993	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2016-08-11	437-994	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.