Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 774

NEW CINGULAR WIRELESS PCS, LLC - DC 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
2014-05-29	774-513	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	WESTBORO	MA
2014-05-23	774-440	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2014-05-21	774-507	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	MEDWAY	MA
2014-05-02	774-432	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2014-04-30	774-385	0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	RUTLAND	MA
2014-04-16	774-505	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2014-04-10	774-220	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MA	892D	FOXBORO	MA
2014-04-10	774-332	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MA	892D	FOXBORO	MA
2014-03-28	774-843	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	MARLBORO	MA
2014-03-27	774-606	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ATTLEBORO	MA
2014-03-03	774-424	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2014-01-02	774-704	0–9 XXXall 10 · 8 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	FALL RIVER	MA
2013-12-09	774-708	0–9 XXXall 10 · 8 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	MILLBURY	MA
2013-11-27	774-804	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MILFORD	MA
2013-11-25	774-343	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PLYMOUTH	MA
2013-10-24	774-701	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	WORCESTER	MA
2013-10-08	774-702	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TC SYSTEMS, INC.	7135	VINEYRDHVN	MA
2013-10-03	774-479	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	HOLDEN	MA
2013-10-03	774-703	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	LEICESTER	MA
2013-10-03	774-806	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	WAYLAND	MA
2013-09-12	774-803	0–9 XXXall 10 · 5 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	HOPKINTON	MA
2013-08-09	774-504	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	TAUNTON	MA
2013-08-08	774-503	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	ROCHESTER	MA
2013-08-08	774-509	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2013-06-12	774-801	0–9 XXXall 10 · 8 holders which blocks →	COMCAST IP PHONE, LLC	318J	ORLEANS	MA
2013-05-24	774-423	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2013-05-23	774-419	0–9 XXXall 10 · 7 holders which blocks →	PAETEC ITEL, LLC	829J	MIDDLEBORO	MA
2013-05-06	774-415	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	AUBURN	MA
2013-04-15	774-409	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	TAUNTON	MA
2013-04-03	774-407	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	DOVER	MA
2013-02-27	774-405	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2013-02-27	774-414	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2013-02-07	774-777	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MA	892D	FRAMINGHAM	MA
2013-01-17	774-410	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2013-01-17	774-412	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2013-01-08	774-336	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	BREWSTER	MA
2013-01-07	774-334	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	SOUTHBDG	MA
2012-12-17	774-357	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	FALL RIVER	MA
2012-12-06	774-502	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	WORCESTER	MA
2012-11-08	774-361	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	OSTERVILLE	MA
2012-11-08	774-404	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PLYMOUTH	MA
2012-10-05	774-309	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	WESTPORT	MA
2012-08-20	774-337	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	BREWSTER	MA
2012-08-13	774-308	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	MARLBORO	MA
2012-08-08	774-205	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	SAGAMORE	MA
2012-05-10	774-301	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	FALL RIVER	MA
2011-12-08	774-304	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	STURBRIDGE	MA
2011-10-19	774-305	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	NEWBEDFORD	MA
2011-09-22	774-228	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	OSTERVILLE	MA
2011-09-22	774-303	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	WORCESTER	MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.