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
— 863-821 0–9 XXXall 10 · 3 holders which blocks → INVOXIO INCORPORATED 158H POLK CITY FL
— 863-824 4XXX5XXX7XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 OKEECHOBEE FL
— 863-825 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C LAKELAND FL
— 863-832 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WAUCHULA FL
— 863-834 not yet reported which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 LAKELAND FL
— 863-835 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SEBRING FL
— 863-837 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WINTER HVN FL
— 863-838 0XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKELAND FL
— 863-840 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAKEPLACID FL
— 863-843 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LABELLE FL
— 863-844 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 MULBERRY FL
— 863-845 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
— 863-850 not yet reported which blocks → FL
— 863-853 0XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 LAKELAND FL
— 863-858 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 LAKELAND FL
— 863-859 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 LAKELAND FL
— 863-862 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G INDIANLAKE FL
— 863-863 not yet reported which blocks → FL
— 863-864 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - FL 937C WAUCHULA FL
— 863-868 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 LAKELAND FL
— 863-869 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 MULBERRY FL
— 863-873 0XXX2XXX5XXX7XXX8XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 AVON PARK FL
— 863-874 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J POLK CITY FL
— 863-875 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-877 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WINTER HVN FL
— 863-884 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 ARCADIA FL
— 863-885 0XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEWISTON FL
— 863-902 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 CLEWISTON FL
— 863-904 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LAKELAND FL
— 863-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 863-913 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J MULBERRY FL
— 863-937 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J LAKELAND FL
— 863-941 not yet reported which blocks → FL
— 863-943 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 MULBERRY FL
— 863-944 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LAKELAND FL
— 863-946 4XXX5XXX7XXX8XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 MOOREHAVEN FL
— 863-950 not yet reported which blocks → FL
— 863-954 not yet reported which blocks → FL
— 863-956 6XXX7XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-958 not yet reported which blocks → FL
— 863-959 not yet reported which blocks → FL
— 863-965 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-967 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-968 2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-969 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WINTER HVN FL
— 863-976 not yet reported which blocks → FL
— 863-978 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 LAKE WALES FL
— 863-983 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 CLEWISTON FL
— 863-984 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 POLK CITY FL
— 863-988 not yet reported which blocks → 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.