Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 — NPA 401

ONVOY, LLC - RI 1

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
2017-12-19	401-259	0–9 XXXall 10 · 5 holders which blocks →	VONAGE AMERICA LLC	197D	PROVIDENCE	RI
2017-11-08	401-240	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	BRISTOL	RI
2017-09-27	401-800	0XXX1XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - RI	977E	BLOCK IS	RI
2017-05-04	401-204	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	PAWTUCKET	RI
2016-12-02	401-317	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	GREENWICH	RI
2016-10-05	401-251	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	PORTSMOUTH	RI
2016-04-06	401-666	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF RHODE ISLAND, LLC - RI	631G	CUMBLND HL	RI
2016-02-24	401-618	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - RI	977E	CENTREDALE	RI
2016-01-12	401-425	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	CUMBLND HL	RI
2015-12-07	401-771	0–9 XXXall 10 · 2 holders which blocks →	WIDE VOICE, LLC - RI	343H	PROVIDENCE	RI
2015-09-16	401-470	0–9 XXXall 10 · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	PROVIDENCE	RI
2014-11-19	401-414	0–9 XXXall 10 · 4 holders which blocks →	AIRUS, INC. - RI	507H	PROVIDENCE	RI
2014-03-20	401-214	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF RHODE ISLAND, LLC - RI	631G	PROVIDENCE	RI
2013-11-25	401-532	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7351	WOONSOCKET	RI
2013-01-30	401-999	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	CUMBLND HL	RI
2012-10-18	401-442	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PROVIDENCE	RI
2012-09-06	401-430	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2012-09-06	401-602	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2012-08-21	401-483	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	BRISTOL	RI
2012-06-11	401-409	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	AT&T - LOCAL	7421	CAROLINA	RI
2012-05-23	401-408	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2012-04-18	401-606	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	PROVIDENCE	RI
2012-03-19	401-406	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-12-14	401-479	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-12-14	401-601	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-11-17	401-302	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-10-17	401-612	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	PROVIDENCE	RI
2011-10-04	401-209	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-09-19	401-346	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	PROVIDENCE	RI
2011-09-09	401-403	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PROVIDENCE	RI
2011-08-16	401-318	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-08-08	401-340	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-08-04	401-327	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	PROVIDENCE	RI
2011-04-06	401-280	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-03-14	401-500	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2011-03-11	401-332	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PROVIDENCE	RI
2011-01-12	401-200	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - RI	977E	BRISTOL	RI
2010-03-04	401-400	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - RI	003F	PROVIDENCE	RI
2010-02-17	401-426	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	CUMBLND HL	RI
2009-07-06	401-871	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2009-04-10	401-548	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	PAWTUCKET	RI
2009-01-09	401-319	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	CENTREDALE	RI
2009-01-06	401-545	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2008-11-06	401-585	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2008-07-25	401-516	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	PROVIDENCE	RI
2008-07-17	401-415	0–9 XXXall 10 · 6 holders which blocks →	PAETEC ITEL, LLC	829J	PROVIDENCE	RI
2008-06-12	401-603	0–9 XXXall 10 · 3 holders which blocks →	YMAX COMMUNICATIONS CORP. - RI	363E	PROVIDENCE	RI
2008-05-27	401-680	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - RI	003F	PROVIDENCE	RI
2008-05-09	401-649	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI	6389	PROVIDENCE	RI
2008-03-19	401-347	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - RI	977E	PROVIDENCE	RI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.