NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 863-284 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 LAKELAND FL
— 863-285 3XXX4XXX5XXX · 3 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 FORT MEADE FL
— 863-287 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D WINTER HVN FL
— 863-288 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 WINTER HVN FL
— 863-289 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
— 863-291 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-292 1XXX5XXX6XXX7XXX · 3 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-293 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-294 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-295 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-297 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-298 2XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-299 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-300 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C POINCIANA FL
— 863-302 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 LABELLE FL
— 863-305 not yet reported which blocks → FL
— 863-307 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 WINTER HVN FL
— 863-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 863-314 2XXX6XXX7XXX · 3 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 SEBRING FL
— 863-318 7XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-321 not yet reported which blocks → FL
— 863-324 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-325 3XXX4XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-326 none assigned yet which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-327 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 LAKELAND FL
— 863-333 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C LAKELAND FL
— 863-342 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 LABELLE FL
— 863-346 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LAKELAND FL
— 863-352 not yet reported which blocks → FL
— 863-357 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 OKEECHOBEE FL
— 863-367 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-375 1XXX7XXX8XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 BOWLNGGREN FL
— 863-381 none assigned yet which blocks → METROPCS, INC. 5562 SEBRING FL
— 863-382 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 SEBRING FL
— 863-385 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 SEBRING FL
— 863-386 2XXX3XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 SEBRING FL
— 863-398 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAKELAND FL
— 863-401 4XXX5XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 WINTER HVN FL
— 863-402 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 SEBRING FL
— 863-407 not yet reported which blocks → FL
— 863-410 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J BARTOW FL
— 863-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 863-412 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 WINTER HVN FL
— 863-413 6XXX7XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 LAKELAND FL
— 863-414 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SEBRING FL
— 863-419 5XXX6XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 863-420 5XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 HAINESCITY FL
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.