Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 19

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
—	617-954	0XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	BOSTON	MA
—	617-956	2XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	BOSTON	MA
—	617-957	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MELROSE	MA
—	617-958	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	CHELSEA	MA
—	617-960	0XXX6XXX7XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BOSTON	MA
—	617-962	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WALTHAM	MA
—	617-964	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWTON	MA
—	617-965	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWTON	MA
—	617-966	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WALTHAM	MA
—	617-967	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WALTHAM	MA
—	617-968	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WALTHAM	MA
—	617-969	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NEWTON	MA
—	617-970	none assigned yet which blocks →	METROPCS, INC.	5562	EASTBOSTON	MA
—	617-971	5XXX6XXX7XXX8XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	JAMAICA PL	MA
—	617-972	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WATERTOWN	MA
—	617-973	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	BOSTON	MA
—	617-974	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WALTHAM	MA
—	617-975	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	BROOKLINE	MA
—	617-976	not yet reported which blocks →				MA
—	617-977	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BELMONT	MA
—	617-978	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MA
—	617-979	not yet reported which blocks →	PAETEC ITEL, LLC	829J	DORCHESTER	MA
—	617-981	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	RCN TELECOM SERVICES, INC. - MA	7619	EASTBOSTON	MA
—	617-982	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BOSTON	MA
—	617-983	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	JAMAICA PL	MA
—	617-984	none assigned yet which blocks →	VERIZON NEW ENGLAND INC.	9102	QUINCY	MA
—	617-985	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	QUINCY	MA
—	617-986	not yet reported which blocks →	PAETEC ITEL, LLC	829J	BOSTON	MA
—	617-987	1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	RCN TELECOM SERVICES, INC. - MA	7619	BRIGHTON	MA
—	617-988	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	BOSTON	MA
—	617-989	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	ROXBURY	MA
—	617-990	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	HYDE PARK	MA
—	617-991	0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BROOKLINE	MA
—	617-992	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BROOKLINE	MA
—	617-993	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	BELMONT	MA
—	617-994	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	BOSTON	MA
—	617-995	not yet reported which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	CAMBRIDGE	MA
—	617-996	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	SOMERVILLE	MA
—	617-997	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	EASTBOSTON	MA
—	617-999	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	CAMBRIDGE	MA
—	618-201	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	CARBONDALE	IL
—	618-203	5XXX7XXX8XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CARBONDALE	IL
—	618-204	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	MT VERNON	IL
—	618-205	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	PAETEC ITEL, LLC	829J	GLENCARBON	IL
—	618-206	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	O FALLON	IL
—	618-208	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	ALTON	IL
—	618-210	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLLINSVL	IL
—	618-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	IL
—	618-212	0XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PAETEC ITEL, LLC	829J	BELLEVILLE	IL
—	618-213	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PAETEC ITEL, LLC	829J	EDGEMONT	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.