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 413

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
2001-02-27	413-642	1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	WESTFIELD	MA
2001-02-26	413-769	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	PITTSFIELD	MA
2001-01-22	413-320	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	NORTHAMPTN	MA
2001-01-22	413-464	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	PITTSFIELD	MA
2001-01-22	413-636	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	SPRINGFLD	MA
2001-01-10	413-657	0XXX2XXX5XXX7XXX8XXX which blocks →	METROPCS, INC.	5562	SPRINGFLD	MA
—	413-201	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	XXXXXXXXXX	MA
—	413-202	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	XXXXXXXXXX	MA
—	413-204	not yet reported which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	SPRINGFLD	MA
—	413-205	4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	SPRINGFLD	MA
—	413-208	not yet reported which blocks →	PAETEC ITEL, LLC	829J	SO DEERFLD	MA
—	413-210	4XXX which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	HOLYOKE	MA
—	413-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	413-214	1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks →	PAETEC ITEL, LLC	829J	SPRINGFLD	MA
—	413-215	not yet reported which blocks →	PAETEC ITEL, LLC	829J	BECKET	MA
—	413-217	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks →	PAETEC ITEL, LLC	829J	WILLIAMSTN	MA
—	413-218	none assigned yet which blocks →	METROPCS, INC.	5562	SPRINGFLD	MA
—	413-219	none assigned yet which blocks →	METROPCS, INC.	5562	SPRINGFLD	MA
—	413-220	not yet reported which blocks →				MA
—	413-221	none assigned yet which blocks →	METROPCS, INC.	5562	SPRINGFLD	MA
—	413-222	none assigned yet which blocks →	METROPCS, INC.	5562	SPRINGFLD	MA
—	413-223	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	GREENFIELD	MA
—	413-224	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	ELONGMEDOW	MA
—	413-225	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC.	7135	NORTHFIELD	MA
—	413-226	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	SPRINGFLD	MA
—	413-227	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	GREENFIELD	MA
—	413-228	3XXX9XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	PALMER	MA
—	413-229	4XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	SHEFFIELD	MA
—	413-231	0XXX2XXX3XXX4XXX6XXX7XXX8XXX which blocks →	TC SYSTEMS, INC.	7135	SPRINGFLD	MA
—	413-232	1XXX3XXX5XXX6XXX9XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	W STOCKBDG	MA
—	413-233	0XXX4XXX6XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	SPRINGFLD	MA
—	413-235	not yet reported which blocks →	PAETEC ITEL, LLC	829J	STOCKBDG	MA
—	413-236	7XXX9XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	PITTSFIELD	MA
—	413-237	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	SPRINGFLD	MA
—	413-238	1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	WORTHINGTN	MA
—	413-239	1XXX3XXX5XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	NORTHFIELD	MA
—	413-240	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	TC SYSTEMS, INC.	7135	CHICOPEE	MA
—	413-241	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	SPRINGFLD	MA
—	413-242	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA	7103	PITTSFIELD	MA
—	413-243	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	LEE	MA
—	413-245	1XXX2XXX8XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	BRIMFIELD	MA
—	413-246	none assigned yet which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	SPRINGFLD	MA
—	413-247	1XXX2XXX4XXX6XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	HATFIELD	MA
—	413-249	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	PITTSFIELD	MA
—	413-250	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	SPRINGFLD	MA
—	413-251	1XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	HINSDALE	MA
—	413-253	6XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	AMHERST	MA
—	413-254	not yet reported which blocks →	PAETEC ITEL, LLC	829J	TURNERSFLS	MA
—	413-256	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	AMHERST	MA
—	413-257	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	SPRINGFLD	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.