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 863
FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 78
CENTURYLINK OF FLORIDA, INC. (UNITED) 46
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 45
NEW CINGULAR WIRELESS PCS, LLC - GA 36
AERIAL COMMUNICATIONS, INC. 31
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
— 863-421 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 863-422 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 863-424 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 863-425 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 MULBERRY FL
— 863-427 5XXX6XXX8XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 863-428 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 MULBERRY FL
— 863-438 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 863-439 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 863-440 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BARTOW FL
— 863-441 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKEPLACID FL
— 863-443 5XXX8XXX9XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 AVON PARK FL
— 863-444 2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ARCADIA FL
— 863-445 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L WAUCHULA FL
— 863-446 5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 SEBRING FL
— 863-447 5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OKEECHOBEE FL
— 863-448 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 WAUCHULA FL
— 863-449 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 AVON PARK FL
— 863-452 none assigned yet which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 AVON PARK FL
— 863-453 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 AVON PARK FL
— 863-462 1XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 OKEECHOBEE FL
— 863-464 3XXX4XXX6XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LAKEPLACID FL
— 863-465 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 LAKEPLACID FL
— 863-467 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 OKEECHOBEE FL
— 863-471 8XXX which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 SEBRING FL
— 863-491 2XXX3XXX which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 ARCADIA FL
— 863-494 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 ARCADIA FL
— 863-499 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 LAKELAND FL
— 863-501 not yet reported which blocks → SPOK, INC. 6630 WINTER HVN FL
— 863-502 not yet reported which blocks → SPOK, INC. 6630 WINTER HVN FL
— 863-508 0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J WINTER HVN FL
— 863-509 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOOREHAVEN FL
— 863-510 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 LAKELAND FL
— 863-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 863-512 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BARTOW FL
— 863-514 4XXX5XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
— 863-517 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LABELLE FL
— 863-519 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 BARTOW FL
— 863-521 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 WINTER HVN FL
— 863-526 not yet reported which blocks → NOVUS COMMUNICATIONS, INC. - FL 9324 LABELLE FL
— 863-528 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D LAKE WALES FL
— 863-529 0XXX1XXX2XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKELAND FL
— 863-531 2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 LAKEPLACID FL
— 863-532 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 OKEECHOBEE FL
— 863-533 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 BARTOW FL
— 863-534 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 BARTOW FL
— 863-535 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BARTOW FL
— 863-537 6XXX7XXX8XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 BARTOW FL
— 863-546 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 FROSTPROOF FL
— 863-547 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J HAINESCITY FL
— 863-551 5XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN 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.