Recent prefix assignments

2 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 571

ONVOY, LLC - VA 1

OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 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
2001-05-23	571-222	0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	HAYMARKET	VA
2001-05-23	571-748	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	WSNGTNZN19	VA
2001-05-23	571-749	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	WSNGTNZN17	VA
2001-05-18	571-242	7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
2001-05-15	571-241	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN17	VA
2001-05-15	571-423	0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	VERIZON VIRGINIA, INC.	9213	WSNGTNZN17	VA
2001-04-04	571-239	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
2001-03-22	571-437	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	HERNDON	VA
2001-03-16	571-332	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN17	VA
2001-03-09	571-275	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN08	VA
2001-03-09	571-276	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN08	VA
2001-02-22	571-237	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN08	VA
2001-02-22	571-238	none assigned yet which blocks →	METROPCS, INC.	5562	WSNGTNZN17	VA
2001-02-12	571-236	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
2001-02-06	571-235	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN17	VA
2001-01-22	571-233	none assigned yet which blocks →	METROPCS, INC.	5562	LEESBURG	VA
2001-01-19	571-217	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
2001-01-19	571-641	0XXX1XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	STARPOWER COMMUNICATIONS, LLC - VA	8830	WSNGTNZN17	VA
2001-01-17	571-232	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
—	571-201	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN19	VA
—	571-203	not yet reported which blocks →	VERIZON VIRGINIA, INC.	9213	HERNDON	VA
—	571-206	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	LEESBURG	VA
—	571-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	VA
—	571-212	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
—	571-213	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
—	571-214	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
—	571-215	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
—	571-216	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
—	571-218	0XXX2XXX5XXX6XXX7XXX8XXX9XXX which blocks →	VERIZON VIRGINIA, INC.	9213	WSNGTNZN08	VA
—	571-219	not yet reported which blocks →	SPOK, INC.	6630	WSNGTNZN08	VA
—	571-220	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN08	VA
—	571-224	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN19	VA
—	571-225	5XXX6XXX7XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN08	VA
—	571-226	0XXX6XXX7XXX which blocks →	VERIZON VIRGINIA, INC.	9213	WSNGTNZN17	VA
—	571-227	not yet reported which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSNGTNZN08	VA
—	571-234	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN19	VA
—	571-267	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	HERNDON	VA
—	571-277	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN08	VA
—	571-278	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN19	VA
—	571-281	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	BRADDOCK	VA
—	571-283	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	HERNDON	VA
—	571-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	VA
—	571-317	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	WSNGTNZN08	VA
—	571-321	4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	BRADDOCK	VA
—	571-322	1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	ENGLESIDE	VA
—	571-323	not yet reported which blocks →	PAETEC ITEL, LLC	829J	HERNDON	VA
—	571-330	none assigned yet which blocks →	METROPCS, INC.	5562	DALE CITY	VA
—	571-331	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSNGTNZN17	VA
—	571-333	not yet reported which blocks →	COMCAST IP PHONE, LLC	318J	LEESBURG	VA
—	571-336	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	ENGLESIDE	VA

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.