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 813
FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 233
AERIAL COMMUNICATIONS, INC. 96
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 73
METROPCS, INC. 53
NEW CINGULAR WIRELESS PCS, LLC - GA 47
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
2007-02-16 813-418 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPACEN FL
2007-01-18 813-398 0–9 XXXwhole prefix which blocks → YMAX COMMUNICATIONS CORP. - FL 594D PLANT CITY FL
2007-01-08 813-206 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J TAMPA FL
2006-11-27 813-257 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2006-10-09 813-465 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPACEN FL
2006-10-09 813-466 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPACEN FL
2006-10-09 813-938 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPASTH FL
2006-09-27 813-704 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L PLANT CITY FL
2006-09-18 813-528 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPANTH FL
2006-07-18 813-507 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2006-07-18 813-562 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2006-06-15 813-480 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2006-05-19 813-446 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2006-05-19 813-527 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPANTH FL
2006-05-19 813-532 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2006-05-12 813-826 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 TAMPACEN FL
2006-04-07 813-412 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2006-04-04 813-463 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J TAMPACEN FL
2006-03-20 813-531 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2006-02-24 813-712 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J TAMPA FL
2006-02-23 813-506 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2006-02-01 813-420 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2006-01-30 813-802 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2006-01-24 813-523 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-12-29 813-574 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J TAMPACEN FL
2005-11-22 813-458 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2005-10-22 813-735 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-10-18 813-447 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-10-11 813-516 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 TAMPA FL
2005-09-16 813-464 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-08-27 813-900 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 TAMPA FL
2005-08-26 813-850 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C TAMPA FL
2005-08-16 813-352 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-08-16 813-407 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-07-22 813-500 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-06-22 813-325 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-05-25 813-270 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-05-17 813-777 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-05-10 813-770 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-04-15 813-425 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAMPACEN FL
2005-03-31 813-919 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-03-24 813-965 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TAMPA FL
2005-03-09 813-401 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-03-01 813-579 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J TAMPACEN FL
2005-02-15 813-484 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-02-08 813-326 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2004-07-30 813-372 0–9 XXXwhole prefix which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-07-13 813-217 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J TAMPACEN FL
2004-06-23 813-200 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TAMPA FL
2004-03-11 813-261 not yet reported which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL

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.