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
2016-05-27	236-229	not yet reported which blocks →	Navigata Communications Limited	078G	Spences Bridge	—
2016-05-27	236-230	not yet reported which blocks →	Navigata Communications Limited	078G	Vavenby	—
2016-05-27	236-231	not yet reported which blocks →	Navigata Communications Limited	078G	Westwold	—
2016-05-27	346-235	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TX	903C	BAMMEL	TX
2016-05-27	442-286	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	ESCONDIDO	CA
2016-05-27	518-805	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TROY	NY
2016-05-27	551-273	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NJ	637C	BAYONNE	NJ
2016-05-27	620-448	0–9 XXXall 10 · 7 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	PARSONS	KS
2016-05-27	775-774	1XXX4XXX · 2 holders which blocks →	WIDE VOICE, LLC - NV	253F	COTNWD CRK	NV
2016-05-27	951-430	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SUN CITY	CA
2016-05-26	226-681	not yet reported which blocks →	Comwave Networks	160G	Walkerton	—
2016-05-26	226-682	not yet reported which blocks →	Comwave Networks	160G	Thornbury	—
2016-05-26	249-303	not yet reported which blocks →	Comwave Networks	160G	Chub Lake	—
2016-05-26	249-404	not yet reported which blocks →	Comwave Networks	160G	Elliot Lake	—
2016-05-26	249-515	not yet reported which blocks →	Comwave Networks	160G	Sturgeon Falls	—
2016-05-26	343-331	not yet reported which blocks →	Comwave Networks	160G	Vankleek Hill	—
2016-05-26	385-268	0–9 XXXall 10 · 4 holders which blocks →	FIRSTDIGITAL COMMUNICATIONS, LLC	716D	PROVO	UT
2016-05-26	412-933	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	PTTSBGZON1	PA
2016-05-26	431-998	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Winnipeg	—
2016-05-26	470-337	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA NE	GA
2016-05-26	505-318	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	ALBUQURQUE	NM
2016-05-26	570-354	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	SCRANTON	PA
2016-05-26	662-636	0–9 XXXall 10 · 4 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	OXFORD	MS
2016-05-26	717-740	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	LANCASTER	PA
2016-05-26	732-944	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	NEWBRNSWCK	NJ
2016-05-26	762-224	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF GEORGIA, LLC - GA	909E	AUGUSTA	GA
2016-05-26	810-484	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	FLINT	MI
2016-05-26	816-715	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	MO
2016-05-26	929-350	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN10	NY
2016-05-25	202-866	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	WSHNGTNZN1	DC
2016-05-25	240-850	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	HAGERSTOWN	MD
2016-05-25	272-808	0–9 XXXall 10 · 6 holders which blocks →	CTSI, INC. - PA	7513	WILKSBARRE	PA
2016-05-25	318-731	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - LA	153F	VIVIAN	LA
2016-05-25	325-304	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SAN ANGELO	TX
2016-05-25	346-351	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	SPRING	TX
2016-05-25	352-681	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	GAINESVL	FL
2016-05-25	440-904	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	E CLARIDON	OH
2016-05-25	484-655	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	ALLENTOWN	PA
2016-05-25	540-496	0XXX1XXX7XXX · 2 holders which blocks →	PEERLESS NETWORK OF VIRGINIA, LLC - VA	275G	CULPEPER	VA
2016-05-25	561-657	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WPALMBEACH	FL
2016-05-25	579-270	not yet reported which blocks →	Comwave Networks	160G	Bedford	—
2016-05-25	579-271	not yet reported which blocks →	Comwave Networks	160G	Farnham	—
2016-05-25	579-272	not yet reported which blocks →	Comwave Networks	160G	Lacolle	—
2016-05-25	579-741	not yet reported which blocks →	Comwave Networks	160G	Actonvale	—
2016-05-25	581-536	not yet reported which blocks →	Comwave Networks	160G	Roberval	—
2016-05-25	581-750	not yet reported which blocks →	Comwave Networks	160G	Biencourt	—
2016-05-25	581-751	not yet reported which blocks →	Comwave Networks	160G	La Pocatiere	—
2016-05-25	581-752	not yet reported which blocks →	Comwave Networks	160G	Trois-Pistoles	—
2016-05-25	629-255	0–9 XXXall 10 · 4 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	NASHVILLE	TN
2016-05-25	629-401	0–9 XXXall 10 · 4 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	NASHVILLE	TN

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.