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
AERIAL COMMUNICATIONS, INC. 96
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
2006-02-01 813-420 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-10-22 813-735 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-09-16 813-464 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 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
2005-05-10 813-770 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-03-31 813-919 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-03-09 813-401 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-02-15 813-484 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2002-04-25 813-363 4XXX5XXX8XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2001-12-26 813-810 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-12-26 813-817 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-07-12 813-766 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-05-22 813-300 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-05-17 813-846 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-03-30 813-389 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-03-12 813-477 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-01-30 813-380 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-01-16 813-841 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-01-16 813-842 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2001-01-16 813-843 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-263 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-368 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-391 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-397 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
— 813-426 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
— 813-451 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-453 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-494 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-495 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-504 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-598 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-638 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
— 813-679 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-732 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-781 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-784 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-785 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-786 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-787 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-789 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-857 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
— 813-897 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
— 813-966 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 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.