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
2019-11-04	769-250	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	PURVIS	MS
2019-11-04	848-283	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	WOODBRIDGE	NJ
2019-11-04	870-771	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MARION	AR
2019-11-04	872-250	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	CHICGOZN01	IL
2019-11-01	302-548	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	GEORGETOWN	DE
2019-11-01	302-553	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	WILMINGTON	DE
2019-11-01	437-533	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-11-01	437-551	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-11-01	437-552	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-11-01	437-553	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-11-01	647-420	not yet reported which blocks →	Beanfield Technologies Inc.	575G	Toronto	—
2019-11-01	647-578	not yet reported which blocks →	TELUS Integrated Communications	2782	Toronto	—
2019-11-01	667-275	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	TOWSON	MD
2019-10-31	253-264	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SUMNER	WA
2019-10-31	262-263	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	OCONOMOWOC	WI
2019-10-31	346-426	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	HOUSTON	TX
2019-10-31	425-459	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	BELLEVUE	WA
2019-10-31	437-322	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-330	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-331	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-332	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-335	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-336	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-337	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-339	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	437-522	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2019-10-31	470-513	0–9 XXXall 10 · 2 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA NE	GA
2019-10-31	571-410	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - VA	138E	LEESBURG	VA
2019-10-31	928-357	0XXX4XXX6XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AZ	3285	WINDOWROCK	AZ
2019-10-31	947-519	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	ROYAL OAK	MI
2019-10-31	954-787	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	DEERFLDBCH	FL
2019-10-30	210-756	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	SANANTONIO	TX
2019-10-30	253-281	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	TACOMAWVLY	WA
2019-10-30	309-391	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	BLOOMINGTN	IL
2019-10-30	438-533	not yet reported which blocks →	Iristel Inc.	154E	Montreal	—
2019-10-30	438-544	not yet reported which blocks →	Iristel Inc.	154E	Montreal	—
2019-10-30	515-514	0–9 XXXall 10 · 4 holders which blocks →	AIRUS, INC - IA	423H	DES MOINES	IA
2019-10-30	563-279	0–9 XXXall 10 · 4 holders which blocks →	AIRUS, INC - IA	423H	DAVENPORT	IA
2019-10-30	579-446	not yet reported which blocks →	Cooptel	818D	St-Felix-de-Valois	—
2019-10-30	579-447	not yet reported which blocks →	Cooptel	818D	St-Alphonse-de-Rodriguez	—
2019-10-30	579-448	not yet reported which blocks →	Cooptel	818D	St-Jean-de-Matha	—
2019-10-30	579-449	not yet reported which blocks →	Cooptel	818D	Rawdon	—
2019-10-30	657-404	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2019-10-30	657-405	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ANA	CA
2019-10-30	657-406	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SILVERADO	CA
2019-10-30	657-407	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WESTMINSTR	CA
2019-10-30	661-484	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	BKFD SOUTH	CA
2019-10-30	734-350	0–9 XXXwhole prefix which blocks →	MICHIGAN BELL TEL CO	9323	YPSILANTI	MI
2019-10-30	734-601	0–9 XXXall 10 · 6 holders which blocks →	MICHIGAN BELL TEL CO	9323	LIVONIA	MI
2019-10-30	947-518	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	ROYAL OAK	MI

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.