Recent prefix assignments

374 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 10/01/2026

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

Rogers Communications Canada Inc. (Wireless) 46

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 28

NEW CINGULAR WIRELESS PCS, LLC - IL 23

ONVOY, LLC - CA 19

New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025

Quick find in this area code:

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	508-200	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	XXXXXXXXXX	MA
—	508-201	not yet reported which blocks →				MA
—	508-202	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	FRAMINGHAM	MA
—	508-205	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	PAETEC ITEL, LLC	829J	EASTON	MA
—	508-208	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	BROCKTON	MA
—	508-209	1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	PLYMOUTH	MA
—	508-210	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	HOLDEN	MA
—	508-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	508-212	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ATTLEBORO	MA
—	508-213	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC.	7135	WEBSTER	MA
—	508-214	0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	WELLFLEET	MA
—	508-215	4XXX6XXX7XXX8XXX9XXX which blocks →	TC SYSTEMS, INC.	7135	FRAMINGHAM	MA
—	508-216	0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	TC SYSTEMS, INC.	7135	FOXBORO	MA
—	508-217	1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC.	7135	BRIDGEWTR	MA
—	508-218	not yet reported which blocks →	NORFOLK COUNTY INTERNET, INC.	6083	NATICK	MA
—	508-219	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	EASTON	MA
—	508-220	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	XXXXXXXXXX	MA
—	508-221	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	NANTUCKET	MA
—	508-222	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ATTLEBORO	MA
—	508-223	none assigned yet which blocks →	VERIZON NEW ENGLAND INC.	9102	ATTLEBORO	MA
—	508-224	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	PLYMOUTH	MA
—	508-226	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ATTLEBORO	MA
—	508-227	not yet reported which blocks →				MA
—	508-228	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NANTUCKET	MA
—	508-229	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	MARLBORO	MA
—	508-230	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	EASTON	MA
—	508-231	0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	FRAMINGHAM	MA
—	508-232	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	METROPCS, INC.	5562	BROCKTON	MA
—	508-233	0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	NATICK	MA
—	508-234	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WHITINSVL	MA
—	508-235	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FALL RIVER	MA
—	508-236	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ATTLEBORO	MA
—	508-237	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	ORLEANS	MA
—	508-238	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	EASTON	MA
—	508-240	4XXX8XXX9XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	ORLEANS	MA
—	508-241	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CHATHAM	MA
—	508-242	1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	MEDFIELD	MA
—	508-243	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	ATTLEBORO	MA
—	508-244	0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	TC SYSTEMS, INC.	7135	MILFORD	MA
—	508-245	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	BRIDGEWTR	MA
—	508-246	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ORLEANS	MA
—	508-247	0XXX1XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	ORLEANS	MA
—	508-248	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	CHARLTON	MA
—	508-249	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	HOPKINTON	MA
—	508-251	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	MARLBORO	MA
—	508-252	0XXX1XXX2XXX7XXX8XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	REHOBOTH	MA
—	508-253	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FRAMINGHAM	MA
—	508-254	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	MEDWAY	MA
—	508-255	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ORLEANS	MA
—	508-256	1XXX2XXX3XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BROCKTON	MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 10/01/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.