NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 813
TELIMIZE, LLC 4
TELEPORT COMMUNICATIONS AMERICA, LLC - FL 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2004-08-17 813-774-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2004-08-16 813-451-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-451-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-08-16 813-469-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ZEPHYRHILS FL
2004-08-13 813-394-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2004-08-13 813-394-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2004-08-06 813-217-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J TAMPACEN FL
2004-08-06 813-716-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PLANT CITY FL
2004-08-03 813-343-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J TAMPAWST FL
2004-08-03 813-345-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J TAMPANTH FL
2004-08-03 813-355-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J ZEPHYRHILS FL
2004-08-03 813-793-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J TAMPAEST FL
2004-08-03 813-944-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J TAMPASTH FL
2004-08-02 813-372-0XXX 0000–0999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-1XXX 1000–1999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-2XXX 2000–2999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-3XXX 3000–3999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-4XXX 4000–4999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-5XXX 5000–5999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-6XXX 6000–6999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-7XXX 7000–7999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-8XXX 8000–8999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-08-02 813-372-9XXX 9000–9999Assigned FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 TAMPACEN FL
2004-07-20 813-323-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPACEN FL
2004-07-19 813-385-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-07-19 813-385-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-07-19 813-385-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-07-19 813-385-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-07-19 813-385-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-07-19 813-385-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2004-06-29 813-448-9XXX 9000–9999Assigned WOW! INTERNET, CABLE AND PHONE 961J TAMPAWST FL
2004-06-25 813-200-0XXX 0000–0999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-1XXX 1000–1999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-2XXX 2000–2999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-3XXX 3000–3999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-4XXX 4000–4999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-5XXX 5000–5999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TAMPA FL
2004-06-25 813-200-7XXX 7000–7999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-8XXX 8000–8999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-25 813-200-9XXX 9000–9999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPA FL
2004-06-18 813-600-1XXX 1000–1999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.