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
2004-01-09 570-355 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 POCONOLAKE PA
2003-11-14 570-994 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J STROUDSBG PA
2003-09-23 570-240 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 TUNKHANNCK PA
2003-07-10 570-749 0–9 XXXall 10 · 5 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 MILL HALL PA
2003-07-09 570-371 0–9 XXXall 10 · 6 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 WILKSBARRE PA
2003-02-14 570-332 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 WILKSBARRE PA
2002-11-19 570-765 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 MIDDLEBURG PA
2002-09-23 570-755 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 MILL HALL PA
2002-08-27 570-737 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SPRINGVL PA
2002-08-26 570-656 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 STROUDSBG PA
2002-08-26 570-657 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 JIM THORPE PA
2002-08-13 570-854 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BLOOMSBURG PA
2002-08-13 570-856 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 STROUDSBG PA
2002-07-22 570-337 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
2002-07-03 570-574 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILKSBARRE PA
2002-07-03 570-575 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SCRANTON PA
2002-04-10 570-497 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 HAZLETON PA
2002-02-28 570-592 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILKSBARRE PA
2002-01-18 570-709 5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILKSBARRE PA
2002-01-04 570-242 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 STROUDSBG PA
2002-01-04 570-259 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SUNBURY PA
2002-01-04 570-362 5XXX6XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PITTSTON PA
2001-12-14 570-556 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 SUNBURY PA
2001-12-12 570-573 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 POTTSVILLE PA
2001-12-07 570-260 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ST CLAIR PA
2001-11-26 570-578 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HAZLETON PA
2001-11-21 570-589 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → METROPCS, INC. 5562 MOOSIC PA
2001-11-06 570-540 1XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PITTSTON PA
2001-10-25 570-295 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LOCK HAVEN PA
2001-09-27 570-216 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT POCONO PA
2001-09-27 570-527 1XXX2XXX3XXX4XXX5XXX8XXX9XXX which blocks → METROPCS, INC. 5562 POTTSVILLE PA
2001-09-17 570-269 5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STROUDSBG PA
2001-09-17 570-499 5XXX8XXX9XXX which blocks → METROPCS, INC. 5562 SCRANTON PA
2001-09-12 570-274 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 SUNBURY PA
2001-08-09 570-399 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 MINERSVL PA
2001-06-21 570-284 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 DANVILLE PA
2001-06-18 570-872 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 STROUDSBG PA
2001-06-14 570-255 4XXX6XXX7XXX8XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 DALLAS PA
2001-06-13 570-441 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BLOOMSBURG PA
2001-06-13 570-772 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
2001-06-06 570-279 2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 WILLIAMSPT PA
2001-06-04 570-263 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 LOCK HAVEN PA
2001-06-04 570-299 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PITTSTON PA
2001-06-04 570-336 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 BLOOMSBURG PA
2001-06-04 570-412 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 MILTON PA
2001-05-24 570-229 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HONESDALE PA
2001-05-21 570-221 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 ELYSBURG PA
2001-05-21 570-232 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 SHENANDOAH PA
2001-05-21 570-428 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 MILTON PA
2001-05-21 570-484 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LOCK HAVEN 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.