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 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
2006-09-20	774-345	0–9 XXXall 10 · 7 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	HOLDEN	MA
2006-09-14	774-678	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	WAREHAM	MA
2006-05-17	774-633	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	AUBURN	MA
2006-05-15	774-567	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	DOVER	MA
2006-04-28	774-444	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BROCKTON	MA
2006-03-29	774-627	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	FALL RIVER	MA
2006-03-17	774-654	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	REHOBOTH	MA
2006-03-17	774-922	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	STURBRIDGE	MA
2006-02-02	774-855	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	ASSONET	MA
2006-01-26	774-302	0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - MA	892D	BUZZARDSBY	MA
2005-03-16	774-402	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	SOUTHBDG	MA
2004-12-28	774-234	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	RUTLAND	MA
2004-12-28	774-241	0XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	STURBRIDGE	MA
2004-06-10	774-293	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	GRAFTON	MA
2003-01-02	774-299	0–9 XXXwhole prefix which blocks →	VERIZON NEW ENGLAND INC.	9102	TAUNTON	MA
2002-10-28	774-267	0XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks →	METROPCS, INC.	5562	NORTHBORO	MA
2002-10-24	774-201	none assigned yet which blocks →	METROPCS, INC.	5562	WESTPORT	MA
2002-10-24	774-219	none assigned yet which blocks →	METROPCS, INC.	5562	FOXBORO	MA
2002-10-24	774-236	5XXX6XXX7XXX · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	NANTUCKET	MA
2002-10-24	774-269	0XXX which blocks →	METROPCS, INC.	5562	SAGAMORE	MA
2002-10-24	774-285	5XXX7XXX8XXX · 2 holders which blocks →	METROPCS, INC.	5562	MARLBORO	MA
2002-10-24	774-286	none assigned yet which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	NATICK	MA
2002-10-24	774-287	none assigned yet which blocks →	METROPCS, INC.	5562	SHREWSBURY	MA
2002-10-24	774-288	1XXX2XXX4XXX5XXX8XXX · 4 holders which blocks →	METROPCS, INC.	5562	WESTBORO	MA
2002-10-24	774-289	none assigned yet which blocks →	METROPCS, INC.	5562	AUBURN	MA
2002-10-21	774-200	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	NOBROOKFLD	MA
2002-10-15	774-281	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BRIDGEWTR	MA
2002-10-15	774-282	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	SOUTHGATE	MA
2002-10-15	774-283	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PLYMOUTH	MA
2002-10-15	774-284	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MANSFIELD	MA
2002-09-27	774-212	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	DENNIS	MA
2002-09-23	774-210	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	WRENTHAM	MA
2002-09-18	774-272	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	AUBURN	MA
2002-09-18	774-273	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	EASTON	MA
2002-09-18	774-274	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	BROCKTON	MA
2002-09-18	774-275	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	SHREWSBURY	MA
2002-09-18	774-276	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	MILLBURY	MA
2002-09-18	774-277	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	MEDWAY	MA
2002-09-18	774-278	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	HOPKINTON	MA
2002-09-18	774-279	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	FRAMINGHAM	MA
2002-09-18	774-280	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	E DOUGLAS	MA
2002-09-10	774-722	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	ORLEANS	MA
2002-08-28	774-270	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	NATICK	MA
2002-08-28	774-271	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	ROCHESTER	MA
2002-08-23	774-251	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BARNSTABLE	MA
2002-08-15	774-353	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	BREWSTER	MA
2002-08-15	774-552	0–9 XXXall 10 · 6 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	HYANNIS	MA
2002-08-13	774-930	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	FALL RIVER	MA
2002-07-29	774-222	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	BRIDGEWTR	MA
2002-07-29	774-323	0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	BREWSTER	MA

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.