Recent prefix assignments

360 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 28

ONVOY, LLC - CA 26

NEW CINGULAR WIRELESS PCS, LLC - IL 26

Rogers Communications Canada Inc. (Wireless) 23

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
2021-08-24	945-215	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	ALLEN	TX
2021-08-24	945-216	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	FRISCO	TX
2021-08-24	945-217	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	FRISCO	TX
2021-08-24	980-356	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	CONCORD	NC
2021-08-24	984-758	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	CHAPELHILL	NC
2021-08-23	213-585	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 03	CA
2021-08-23	341-587	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	FRNK GRNLF	CA
2021-08-23	505-644	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	SANTA FE	NM
2021-08-23	505-755	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	ESPANOLA	NM
2021-08-23	530-785	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	AUBN MAIN	CA
2021-08-23	619-949	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CHULAVISTA	CA
2021-08-23	626-725	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2021-08-23	650-613	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	PALO ALTO	CA
2021-08-23	657-527	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ANAHEIM	CA
2021-08-23	657-535	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	YORBALINDA	CA
2021-08-23	820-587	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	SANBARBARA	CA
2021-08-23	831-587	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	WATSONVL	CA
2021-08-23	928-423	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AZ	3285	FLAGSTAFF	AZ
2021-08-20	225-568	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	SORRENTO	LA
2021-08-20	352-723	0–9 XXXall 10 · 7 holders which blocks →	TELNYX LLC	073H	OCALA	FL
2021-08-20	458-272	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF OREGON, LLC - OR	157F	CORVALLIS	OR
2021-08-20	479-450	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	SPRINGDALE	AR
2021-08-20	672-784	not yet reported which blocks →	Iristel Inc.	154E	Lillooet	—
2021-08-20	672-906	not yet reported which blocks →	Iristel Inc.	154E	Squamish	—
2021-08-20	726-842	0–9 XXXall 10 · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	SANANTONIO	TX
2021-08-20	737-293	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	BASTROP	TX
2021-08-20	737-294	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	BASTROP	TX
2021-08-20	857-788	0–9 XXXall 10 · 4 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	BOSTON	MA
2021-08-20	904-922	0–9 XXXall 10 · 7 holders which blocks →	FRACTEL, LLC	965H	BALDWIN	FL
2021-08-20	915-279	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2021-08-20	941-577	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	BRADENTON	FL
2021-08-20	941-599	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	VENICE	FL
2021-08-20	954-887	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	FTLAUDERDL	FL
2021-08-20	971-408	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	TILLAMOOK	OR
2021-08-19	206-758	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	BAINBDG IS	WA
2021-08-19	206-944	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	DES MOINES	WA
2021-08-19	249-286	not yet reported which blocks →	Fibernetics Corporation	464D	McKellar	—
2021-08-19	249-287	not yet reported which blocks →	Fibernetics Corporation	464D	Parry Sound	—
2021-08-19	253-500	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	TACOMAWVLY	WA
2021-08-19	260-285	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLUMBIACY	IN
2021-08-19	276-257	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	BIGSTONEGP	VA
2021-08-19	303-276	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - CO	026D	DENVER	CO
2021-08-19	425-758	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	HALLS LAKE	WA
2021-08-19	431-905	not yet reported which blocks →	Westman Media Cooperative Ltd	120F	Benito	—
2021-08-19	431-906	not yet reported which blocks →	Westman Media Cooperative Ltd	120F	Birch River	—
2021-08-19	431-907	not yet reported which blocks →	Westman Media Cooperative Ltd	120F	Bowsman	—
2021-08-19	431-908	not yet reported which blocks →	Westman Media Cooperative Ltd	120F	Clear Lake	—
2021-08-19	480-806	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2021-08-19	579-349	not yet reported which blocks →	Fibernetics Corporation	464D	Mirabel-St-Augustin	—
2021-08-19	579-350	not yet reported which blocks →	Fibernetics Corporation	464D	Mirabel-Ste-Scholastique	—

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.