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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2001-05-14 863-431 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 BOWLNGGREN FL
2001-05-14 863-434 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 AVON PARK FL
2001-05-11 863-260 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 LAKEPLACID FL
2001-05-11 863-301 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 CLEWISTON FL
2001-05-11 863-303 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 ARCADIA FL
2001-05-11 863-304 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 SEBRING FL
2001-05-07 863-455 0–9 XXXall 10 · 6 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 LAKE WALES FL
2001-04-01 863-456 0–9 XXXall 10 · 7 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G LAKE WALES FL
2001-03-26 863-233 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CLEWISTON FL
2001-03-08 863-409 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKELAND FL
2001-02-06 863-484 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OKEECHOBEE FL
— 863-201 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 AVON PARK FL
— 863-202 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SEBRING FL
— 863-205 0XXX2XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → METROPCS NETWORKS, LLC 899D BARTOW FL
— 863-206 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINTER HVN FL
— 863-207 8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINTER HVN FL
— 863-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 863-214 0XXX2XXX7XXX which blocks → METROPCS, INC. 5562 SEBRING FL
— 863-215 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LAKE WALES FL
— 863-216 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HAINESCITY FL
— 863-217 not yet reported which blocks → SPOK, INC. 6630 WINTER HVN FL
— 863-221 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
— 863-222 0–9 XXXall 10 · 7 holders which blocks → IP HORIZON LLC 515J WAUCHULA FL
— 863-223 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 LAKE WALES FL
— 863-224 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
— 863-226 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 LAKELAND FL
— 863-227 1XXX2XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 MOOREHAVEN FL
— 863-228 5XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CLEWISTON FL
— 863-229 3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 WINTER HVN FL
— 863-230 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J LABELLE FL
— 863-231 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J ARCADIA FL
— 863-232 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 LAKE WALES FL
— 863-234 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 LABELLE FL
— 863-236 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 HAINESCITY FL
— 863-239 not yet reported which blocks → FL
— 863-241 0XXX2XXX4XXX5XXX6XXX7XXX8XXX which blocks → METROPCS NETWORKS, LLC 899D LAKE WALES FL
— 863-242 0XXX4XXX5XXX7XXX8XXX which blocks → METROPCS NETWORKS, LLC 899D HAINESCITY FL
— 863-243 0XXX2XXX4XXX6XXX8XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKEPLACID FL
— 863-244 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ARCADIA FL
— 863-245 0XXX2XXX4XXX5XXX7XXX8XXX which blocks → METROPCS, INC. 5562 WAUCHULA FL
— 863-248 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 LAKELAND FL
— 863-254 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J CLEWISTON FL
— 863-255 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LAKELAND FL
— 863-256 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 HAINESCITY FL
— 863-257 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 AVON PARK FL
— 863-258 4XXX5XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINTER HVN FL
— 863-259 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINTER HVN FL
— 863-262 0–9 XXXall 10 · 6 holders which blocks → METROPCS NETWORKS, LLC 899D LAKELAND FL
— 863-268 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 WINTER HVN FL
— 863-269 0–9 XXXall 10 · 8 holders which blocks → METROPCS NETWORKS, LLC 899D 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.