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
— 813-614 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
— 813-615 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-617 0–9 XXXwhole prefix which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
— 813-618 3XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPANTH FL
— 813-620 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-621 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-622 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-623 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-624 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
— 813-625 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
— 813-626 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-627 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-628 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-629 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
— 813-630 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-631 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-632 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-633 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPASTH FL
— 813-634 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPASTH FL
— 813-635 6XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-636 6XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-637 2XXX5XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-638 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
— 813-639 8XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-641 4XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPASTH FL
— 813-642 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPASTH FL
— 813-643 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-645 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPASTH FL
— 813-646 0–9 XXXwhole prefix which blocks → HD CARRIER LLC 321J ZEPHYRHILS FL
— 813-649 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPASTH FL
— 813-650 1XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 PLANT CITY FL
— 813-651 8XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-653 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-654 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-655 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-657 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-658 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J TAMPASTH FL
— 813-659 5XXX6XXX7XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 PLANT CITY FL
— 813-660 0–9 XXXwhole prefix which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
— 813-661 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-662 4XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
— 813-663 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-664 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-666 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPACEN FL
— 813-670 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C ZEPHYRHILS FL
— 813-671 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-672 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-673 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-674 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
— 813-675 4XXX5XXX7XXX8XXX · 4 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 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.