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
2001-05-21 570-691 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 POTTSVILLE PA
2001-04-23 570-400 not yet reported which blocks → LIMITLESS MOBILE, LLC 6921 SHENANDOAH PA
2001-04-18 570-228 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 HONESDALE PA
2001-04-18 570-246 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → METROPCS, INC. 5562 MILTON PA
2001-04-18 570-486 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 SHAMOKIN PA
2001-04-18 570-768 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 LEWISBURG PA
2001-04-18 570-786 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 LOCK HAVEN PA
2001-04-18 570-974 0XXX2XXX5XXX7XXX8XXX · 4 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 WILLIAMSPT PA
2001-04-17 570-627 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TOWANDA PA
2001-03-20 570-951 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 BLOOMSBURG PA
2001-03-14 570-231 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 BERWICK PA
2001-03-14 570-789 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 POTTSVILLE PA
2001-03-14 570-926 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 HAZLETON PA
2001-02-07 570-328 not yet reported which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILKSBARRE PA
2001-01-17 570-764 8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BLOOMSBURG PA
— 570-200 5XXX which blocks → VERIZON PENNSYLVANIA, INC. 9208 WILKSBARRE PA
— 570-204 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BLOOMSBURG PA
— 570-205 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ASHLAND PA
— 570-207 not yet reported which blocks → CTSI, INC. - PA 7513 SCRANTON PA
— 570-208 not yet reported which blocks → CTSI, INC. - PA 7513 WILKSBARRE PA
— 570-210 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 XXXXXXXXXX PA
— 570-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 570-212 3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PITTSTON PA
— 570-213 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J STROUDSBG PA
— 570-214 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 DANVILLE PA
— 570-215 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WHITEHAVEN PA
— 570-218 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J BERWICK PA
— 570-220 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
— 570-222 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 CLIFFORD PA
— 570-223 3XXX4XXX5XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 STROUDSBG PA
— 570-224 1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 GALILEE PA
— 570-225 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 TAMAQUA PA
— 570-226 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAWLEY PA
— 570-227 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E SCRANTON PA
— 570-230 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J JERMYN PA
— 570-233 4XXX8XXX9XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 HAZLETON PA
— 570-234 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 STROUDSBG PA
— 570-236 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STROUDSBG PA
— 570-237 2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PITTSTON PA
— 570-239 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILKSBARRE PA
— 570-241 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SCRANTON PA
— 570-243 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MT POCONO PA
— 570-244 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILLIAMSPT PA
— 570-245 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J BLOOMSBURG PA
— 570-247 3XXX4XXX6XXX8XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 ROME PA
— 570-251 0XXX1XXX2XXX5XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HONESDALE PA
— 570-252 0–9 XXXall 10 · 9 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 NEWFOUNDLD PA
— 570-253 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 HONESDALE PA
— 570-254 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 CHAPMAN LK PA
— 570-256 1XXX2XXX5XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 MUHLENBURG 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.