NumberResearch Membership · Data 09/20/2026

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 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
— 570-771 0–9 XXXall 10 · 5 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PLYMOUTH PA
— 570-773 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MAHANOY CY PA
— 570-774 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MOOSIC PA
— 570-775 2XXX3XXX5XXX8XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LORDS VLY PA
— 570-776 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD PA
— 570-777 not yet reported which blocks → LIMITLESS MOBILE, LLC 6921 WILLIAMSPT PA
— 570-778 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TAMAQUA PA
— 570-779 6XXX7XXX8XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 PLYMOUTH PA
— 570-780 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SCRANTON PA
— 570-783 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MAHANOY CY PA
— 570-784 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 BLOOMSBURG PA
— 570-785 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 FORESTCITY PA
— 570-788 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 CNYNGHDRMS PA
— 570-793 0XXX2XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILKSBARRE PA
— 570-794 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 FRACKVILLE PA
— 570-795 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MOSCOW PA
— 570-796 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E SCRANTON PA
— 570-797 9XXX which blocks → MAHANOY & MAHANTANGO TEL. CO. 0183 TREVORTON PA
— 570-798 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LAKE COMO PA
— 570-799 2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 NUMIDIA PA
— 570-800 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E SCRANTON PA
— 570-801 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SAYLORSBG PA
— 570-802 3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CTSI, INC. - PA 7513 BERWICK PA
— 570-803 1XXX5XXX · 2 holders which blocks → CTSI, INC. - PA 7513 JERMYN PA
— 570-804 not yet reported which blocks → SPOK, INC. 6630 SCRANTON PA
— 570-805 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 LANSFORD PA
— 570-806 0XXX1XXX2XXX3XXX5XXX6XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 CLIFFORD PA
— 570-807 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 STROUDSBG PA
— 570-809 7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SUNBURY PA
— 570-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 570-812 3XXX4XXX5XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J NANTICOKE PA
— 570-814 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILKSBARRE PA
— 570-815 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SCRANTON PA
— 570-817 9XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILKSBARRE PA
— 570-818 0–9 XXXall 10 · 10 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MANTZVILLE PA
— 570-819 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-820 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-821 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-822 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-823 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-824 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-825 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-826 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-827 5XXX7XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 LAWRENCEVL PA
— 570-828 0XXX3XXX4XXX5XXX · 3 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 DINGMAFRRY PA
— 570-829 9XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-830 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-831 5XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-833 7XXX8XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 MEHOOPANY PA
— 570-835 2XXX3XXX8XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 TIOGA 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.