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 813
FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 233
AERIAL COMMUNICATIONS, INC. 96
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 73
METROPCS, INC. 53
NEW CINGULAR WIRELESS PCS, LLC - GA 47
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
2017-11-29 813-460 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2017-10-25 813-439 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAMPACEN FL
2017-08-08 813-544 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C TAMPACEN FL
2017-07-27 813-836 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 PLANT CITY FL
2017-07-18 813-213 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPASTH FL
2017-06-08 813-450 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H TAMPACEN FL
2017-06-08 813-536 0–9 XXXall 10 · 5 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPANTH FL
2017-06-08 813-542 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2017-06-08 813-543 0–9 XXXall 10 · 6 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPAWST FL
2017-06-08 813-548 0–9 XXXall 10 · 3 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPAEST FL
2017-06-06 813-437 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2017-03-28 813-461 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2017-03-28 813-492 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAWST FL
2017-03-06 813-459 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2017-02-27 813-392 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAMPACEN FL
2017-02-21 813-696 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ZEPHYRHILS FL
2017-01-05 813-730 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 PLANT CITY FL
2017-01-04 813-378 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TAMPAEST FL
2016-12-08 813-953 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2016-12-06 813-547 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 TAMPAWST FL
2016-12-02 813-538 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H TAMPACEN FL
2016-10-26 813-955 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2016-10-20 813-557 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2016-07-22 813-820 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPAEST FL
2016-07-07 813-296 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPASTH FL
2016-07-05 813-328 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 TAMPAWST FL
2016-06-27 813-591 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPANTH FL
2016-06-15 813-860 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2016-06-03 813-853 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D TAMPACEN FL
2016-05-13 813-848 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PLANT CITY FL
2016-05-03 813-291 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2016-04-28 813-278 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAEST FL
2016-04-22 813-539 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2015-12-16 813-970 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2015-12-10 813-993 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TAMPAEST FL
2015-11-10 813-947 0–9 XXXall 10 · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J TAMPACEN FL
2015-10-22 813-734 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2015-10-22 813-940 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2015-10-12 813-916 0–9 XXXwhole prefix which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPAEST FL
2015-09-02 813-724 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2015-08-18 813-619 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2015-07-09 813-255 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2015-06-19 813-858 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2015-06-03 813-847 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TAMPACEN FL
2015-05-29 813-682 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPACEN FL
2015-05-20 813-533 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPACEN FL
2015-04-28 813-370 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPAWST FL
2015-03-26 813-586 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPACEN FL
2015-03-03 813-906 0–9 XXXall 10 · 3 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2014-12-24 813-559 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAMPACEN 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.