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 508

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 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
—	508-680	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	NANTUCKET	MA
—	508-682	1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	EASTON	MA
—	508-684	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	VINEYRDHVN	MA
—	508-685	8XXX which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BARNSTABLE	MA
—	508-687	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - MA	892D	VINEYRDHVN	MA
—	508-688	0XXX1XXX2XXX4XXX5XXX7XXX9XXX which blocks →	TC SYSTEMS, INC.	7135	WORCESTER	MA
—	508-689	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	TC SYSTEMS, INC.	7135	FALL RIVER	MA
—	508-690	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	EBRIDGEWTR	MA
—	508-691	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	NORTHBORO	MA
—	508-692	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	TAUNTON	MA
—	508-693	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	VINEYRDHVN	MA
—	508-694	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - MA	892D	DENNIS	MA
—	508-695	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NO ATTLEBO	MA
—	508-696	2XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	VINEYRDHVN	MA
—	508-697	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	BRIDGEWTR	MA
—	508-698	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FOXBORO	MA
—	508-699	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NO ATTLEBO	MA
—	508-700	not yet reported which blocks →				MA
—	508-701	not yet reported which blocks →				MA
—	508-702	not yet reported which blocks →				MA
—	508-703	not yet reported which blocks →				MA
—	508-704	not yet reported which blocks →				MA
—	508-705	not yet reported which blocks →				MA
—	508-706	not yet reported which blocks →				MA
—	508-707	not yet reported which blocks →				MA
—	508-708	not yet reported which blocks →				MA
—	508-709	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	NORTHBORO	MA
—	508-710	not yet reported which blocks →				MA
—	508-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	508-712	not yet reported which blocks →				MA
—	508-713	1XXX2XXX3XXX5XXX7XXX8XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WORCESTER	MA
—	508-714	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	WHITINSVL	MA
—	508-715	0XXX1XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	EBRIDGEWTR	MA
—	508-716	not yet reported which blocks →	NORFOLK COUNTY INTERNET, INC.	6083	NANTUCKET	MA
—	508-717	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	NEWBEDFORD	MA
—	508-718	0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	FOXBORO	MA
—	508-719	5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	SHREWSBURY	MA
—	508-720	2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	NATICK	MA
—	508-721	6XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	AUBURN	MA
—	508-722	not yet reported which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	AUBURN	MA
—	508-723	0XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-725	0XXX9XXX which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	WALPOLE	MA
—	508-726	none assigned yet which blocks →	METROPCS, INC.	5562	MARLBORO	MA
—	508-727	not yet reported which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	AUBURN	MA
—	508-728	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	ROCHESTER	MA
—	508-729	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	AUBURN	MA
—	508-730	6XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	FALL RIVER	MA
—	508-732	2XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	PLYMOUTH	MA
—	508-733	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	FRAMINGHAM	MA
—	508-735	not yet reported 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.