NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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, all time — NPA 570
VERIZON PENNSYLVANIA, INC. 156
COMMONWEALTH TELEPHONE COMPANY LLC 75
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 75
NEW CINGULAR WIRELESS PCS, LLC - DC 68
CORE COMMUNICATIONS, INC. - PA 62
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 570-836 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 TUNKHANNCK PA
— 570-837 6XXX9XXX · 2 holders which blocks → VERIZON NORTH, INC. - PA (CONTEL) 0170 MIDDLEBURG PA
— 570-839 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 MT POCONO PA
— 570-840 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SCRANTON PA
— 570-842 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 MOSCOW PA
— 570-843 1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MOSCOW PA
— 570-847 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SUNBURY PA
— 570-848 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MOSCOW PA
— 570-849 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 DANVILLE PA
— 570-850 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SUNBURY PA
— 570-852 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 KINGSTON PA
— 570-853 1XXX6XXX7XXX8XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 SUSQUHANNA PA
— 570-857 2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WALENPAPCK PA
— 570-858 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → AMERICELL PA-3 LIMITED PARTNERSHIP 9475 LOCK HAVEN PA
— 570-861 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HAZLETON PA
— 570-863 0XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 SUNBURY PA
— 570-864 1XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 HUNTIGTNML PA
— 570-865 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 JERSEYSHOR PA
— 570-868 1XXX2XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 NUANGOLA PA
— 570-869 4XXX5XXX6XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 LACEYVILLE PA
— 570-873 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 AVIS PA
— 570-874 6XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 FRACKVILLE PA
— 570-875 7XXX8XXX9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 ASHLAND PA
— 570-876 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 JERMYN PA
— 570-879 1XXX3XXX7XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 HALLSTEAD PA
— 570-881 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
— 570-882 2XXX3XXX4XXX5XXX which blocks → VERIZON NORTH, INC. - PA 0169 SAYRE PA
— 570-883 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PITTSTON PA
— 570-884 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NORTH, INC. - PA (CONTEL) 0170 SELINSGRV PA
— 570-885 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
— 570-886 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → VERIZON NORTH, INC. - PA 0169 SAYRE PA
— 570-888 not yet reported which blocks → VERIZON NORTH, INC. - PA 0169 SAYRE PA
— 570-889 1XXX which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 RINGTOWN PA
— 570-891 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PITTSTON PA
— 570-893 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 LOCK HAVEN PA
— 570-894 7XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 MT POCONO PA
— 570-895 0XXX1XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MT POCONO PA
— 570-897 1XXX3XXX4XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 PORTLAND PA
— 570-898 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SUNBURY PA
— 570-900 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - PA 547E ASHLAND PA
— 570-902 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 NANTICOKE PA
— 570-905 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
— 570-906 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 SCRANTON PA
— 570-908 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PITTSTON PA
— 570-909 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SCRANTON PA
— 570-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 570-912 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BLOOMSBURG PA
— 570-916 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILLIAMSPT PA
— 570-918 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E QUAKERLAKE PA
— 570-922 not yet reported which blocks → WINDSTREAM BUFFALO VALLEY, INC. 0151 MIFFLINBG PA

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.