NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 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, last 30 days
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
— 727-247 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 NWPTRICHEY FL
— 727-249 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
— 727-251 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
— 727-252 3XXX4XXX6XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J CLEARWATER FL
— 727-257 not yet reported which blocks → SPOK, INC. 6630 STPETERSBG FL
— 727-258 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J STPETERSBG FL
— 727-259 1XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CLEARWATER FL
— 727-280 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J STPETERSBG FL
— 727-287 4XXX5XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 CLEARWATER FL
— 727-288 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 CLEARWATER FL
— 727-289 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 STPETERSBG FL
— 727-290 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 STPETERSBG FL
— 727-298 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 CLEARWATER FL
— 727-299 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-301 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
— 727-302 1XXX8XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-305 not yet reported which blocks → FL
— 727-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 727-319 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-320 2XXX3XXX4XXX5XXX6XXX7XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-321 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-322 3XXX4XXX7XXX · 3 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-323 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-324 3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 CLEARWATER FL
— 727-326 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 NWPTRICHEY FL
— 727-327 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-328 4XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-329 4XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 STPETERSBG FL
— 727-335 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C CLEARWATER FL
— 727-341 5XXX8XXX9XXX · 2 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-342 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 STPETERSBG FL
— 727-343 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-344 9XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-345 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-346 1XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-347 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-352 not yet reported which blocks → FL
— 727-356 not yet reported which blocks → ABC PAGING CITY BEEPERS, INC. 6548 NWPTRICHEY FL
— 727-357 not yet reported which blocks → ABC PAGING CITY BEEPERS, INC. 6548 CLEARWATER FL
— 727-359 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 NWPTRICHEY FL
— 727-360 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-361 2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TARPON SPG FL
— 727-362 5XXX6XXX7XXX8XXX · 3 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 STPETERSBG FL
— 727-363 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-364 0XXX2XXX · 2 holders which blocks → METROPCS, INC. 5562 NWPTRICHEY FL
— 727-365 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLEARWATER FL
— 727-366 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLEARWATER FL
— 727-367 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-368 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-369 6XXX8XXX9XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 STPETERSBG 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.