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
2023-12-07 813-656 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H TAMPACEN FL
2023-11-14 813-954 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2023-11-01 813-772 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 PLANT CITY FL
2023-10-18 813-214 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H PLANT CITY FL
2023-10-18 813-338 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H TAMPASTH FL
2023-10-18 813-561 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H TAMPAWST FL
2023-09-12 813-904 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ZEPHYRHILS FL
2023-05-23 813-813 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H TAMPACEN FL
2022-08-02 813-761 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C TAMPACEN FL
2022-08-02 813-921 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C TAMPANTH FL
2021-12-22 813-945 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TAMPACEN FL
2021-12-08 813-937 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAMPAWST FL
2021-12-08 813-939 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAMPACEN FL
2021-11-08 813-934 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TAMPAWST FL
2021-11-08 813-942 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H TAMPACEN FL
2021-10-08 813-896 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E PLANT CITY FL
2021-09-21 813-894 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPASTH FL
2021-09-16 813-893 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 TAMPACEN FL
2021-09-14 813-869 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2021-08-19 813-861 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H TAMPAEST FL
2021-08-18 813-834 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2021-08-13 813-923 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E ZEPHYRHILS FL
2021-08-04 813-851 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPAWST FL
2021-07-28 813-825 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPANTH FL
2021-07-22 813-798 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E PLANT CITY FL
2021-07-02 813-797 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2021-06-21 813-796 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPAEST FL
2021-05-25 813-790 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPANTH FL
2021-05-25 813-791 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPASTH FL
2021-05-17 813-821 0–9 XXXwhole prefix which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2021-03-24 813-859 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 ZEPHYRHILS FL
2021-03-23 813-776 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J TAMPAWST FL
2021-03-18 813-771 0–9 XXXall 10 · 2 holders which blocks → STRATUS NETWORKS 495J TAMPACEN FL
2021-02-26 813-668 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PLANT CITY FL
2021-02-15 813-742 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H TAMPASTH FL
2021-02-15 813-768 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H TAMPAEST FL
2021-02-02 813-738 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H TAMPANTH FL
2021-01-11 813-736 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPASTH FL
2021-01-08 813-729 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPASTH FL
2020-12-28 813-725 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C TAMPAEST FL
2020-12-28 813-726 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TAMPAWST FL
2020-12-17 813-809 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TAMPANTH FL
2020-12-11 813-608 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 PLANT CITY FL
2020-10-23 813-723 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2020-10-01 813-705 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPACEN FL
2020-10-01 813-807 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J TAMPACEN FL
2020-09-30 813-697 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H TAMPACEN FL
2020-09-28 813-588 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 PLANT CITY FL
2020-09-15 813-692 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D TAMPACEN FL
2020-09-11 813-687 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPAWST 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.