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 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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2011-07-19 813-529 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 TAMPACEN FL
2011-06-22 813-297 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2011-06-15 813-280 0–9 XXXall 10 · 4 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2011-04-29 813-898 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2011-04-01 813-279 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TAMPANTH FL
2011-03-25 813-701 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 ZEPHYRHILS FL
2010-12-13 813-501 0–9 XXXall 10 · 6 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPANTH FL
2010-12-06 813-399 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2010-12-02 813-400 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2010-10-25 813-455 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2010-09-17 813-520 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2010-09-14 813-444 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E TAMPACEN FL
2010-08-17 813-525 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 813C TAMPACEN FL
2010-07-21 813-419 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPASTH FL
2010-06-22 813-644 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2010-06-18 813-440 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2010-05-20 813-498 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2010-03-03 813-344 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2010-02-24 813-445 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPAEST FL
2010-02-11 813-800 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J TAMPACEN FL
2010-01-20 813-438 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAEST FL
2009-12-01 813-358 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C TAMPAWST FL
2009-10-15 813-415 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2009-02-19 813-423 0–9 XXXall 10 · 3 holders which blocks → YMAX COMMUNICATIONS CORP. - FL 594D TAMPAEST FL
2009-02-19 813-474 0–9 XXXall 10 · 3 holders which blocks → YMAX COMMUNICATIONS CORP. - FL 594D TAMPANTH FL
2009-02-17 813-347 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2009-02-17 813-409 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPAEST FL
2009-02-17 813-475 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPAWST FL
2009-02-09 813-667 0–9 XXXall 10 · 2 holders which blocks → YMAX COMMUNICATIONS CORP. - FL 594D TAMPACEN FL
2008-12-23 813-443 0–9 XXXwhole prefix which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2008-09-12 813-428 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPANTH FL
2008-09-04 813-421 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPACEN FL
2008-07-18 813-422 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2008-07-08 813-863 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPAWST FL
2008-06-19 813-405 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2008-06-17 813-373 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2008-04-29 813-408 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPAWST FL
2008-04-10 813-379 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2008-04-08 813-384 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2008-04-02 813-406 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2008-04-02 813-481 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAEST FL
2008-03-26 813-381 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPAEST FL
2008-03-21 813-369 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2008-01-28 813-374 0–9 XXXwhole prefix which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2007-12-05 813-403 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAWST FL
2007-11-21 813-402 0–9 XXXall 10 · 8 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2007-10-08 813-442 0–9 XXXall 10 · 3 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2007-07-25 813-449 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPACEN FL
2007-04-25 813-321 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2007-03-01 813-410 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TAMPA FL

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.