Recent prefix assignments

0 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, all time — NPA 610

VERIZON PENNSYLVANIA, INC. 325

NEW CINGULAR WIRELESS PCS, LLC - DC 56

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 43

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 39

TELEPORT COMMUNICATIONS AMERICA, LLC - PA 38

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
—	610-832	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN31	PA
—	610-833	0XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN11	PA
—	610-834	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN31	PA
—	610-836	1XXX2XXX which blocks →	PAETEC ITEL, LLC	829J	W CHESTER	PA
—	610-837	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	BATH	PA
—	610-838	4XXX which blocks →	VERIZON PENNSYLVANIA, INC.	9208	HELLERTOWN	PA
—	610-839	0–9 XXXall 10 · 3 holders which blocks →	CORE COMMUNICATIONS, INC. - PA	3806	BATH	PA
—	610-840	2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	W CHESTER	PA
—	610-841	6XXX which blocks →	SERVICE ELECTRIC TELEPHONE COMPANY, LLC	8320	ALLENTOWN	PA
—	610-842	none assigned yet which blocks →	METROPCS, INC.	5562	PHPHSBZN28	PA
—	610-843	1XXX2XXX4XXX5XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	PHPHSBZN28	PA
—	610-845	not yet reported which blocks →	WINDSTREAM CONESTOGA, INC.	0162	BALLY	PA
—	610-846	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	XXXXXXXXXX	PA
—	610-847	not yet reported which blocks →	COMMONWEALTH TELEPHONE COMPANY LLC	0161	FERNDALE	PA
—	610-848	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	PHPHSBZN22	PA
—	610-849	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	BETHLEHEM	PA
—	610-850	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	POTTSTOWN	PA
—	610-851	1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	NORTHAMPTN	PA
—	610-852	not yet reported which blocks →	PALMERTON TEL. CO.	0196	BOWMANSTN	PA
—	610-853	7XXX which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN21	PA
—	610-854	8XXX9XXX which blocks →	PAETEC ITEL, LLC	829J	PHPHSBZN28	PA
—	610-855	none assigned yet which blocks →	WINDSTREAM CONESTOGA, INC.	0162	GREENHILLS	PA
—	610-856	not yet reported which blocks →	WINDSTREAM CONESTOGA, INC.	0162	GREENHILLS	PA
—	610-857	6XXX7XXX · 2 holders which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PARKESBURG	PA
—	610-858	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	BIRDSBORO	PA
—	610-859	4XXX which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN11	PA
—	610-860	0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	PHPHSBZN21	PA
—	610-861	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	BETHLEHEM	PA
—	610-862	9XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PHPHSBZN31	PA
—	610-863	not yet reported which blocks →	COMMONWEALTH TELEPHONE COMPANY LLC	0161	PEN ARGYL	PA
—	610-864	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	PHPHSBZN28	PA
—	610-865	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	BETHLEHEM	PA
—	610-866	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	BETHLEHEM	PA
—	610-867	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	BETHLEHEM	PA
—	610-868	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	BETHLEHEM	PA
—	610-869	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	WEST GROVE	PA
—	610-870	1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	PHPHSBZN14	PA
—	610-871	none assigned yet which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	ALLENTOWN	PA
—	610-872	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN11	PA
—	610-873	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	DOWNINGTN	PA
—	610-874	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN11	PA
—	610-876	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN11	PA
—	610-877	1XXX2XXX5XXX6XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	PHPHSBZN31	PA
—	610-878	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	PHPHSBZN30	PA
—	610-879	0XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	PHPHSBZN30	PA
—	610-882	not yet reported which blocks →	VERIZON PENNSYLVANIA, INC.	9208	BETHLEHEM	PA
—	610-883	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7309	W CHESTER	PA
—	610-884	0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7309	EXTON	PA
—	610-885	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7309	EAGLE	PA
—	610-886	2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PHPHSBZN22	PA

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.