NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
2005-06-27 813-322-7XXX 7000–7999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 ZEPHYRHILS FL
2005-06-27 813-322-8XXX 8000–8999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 ZEPHYRHILS FL
2005-06-27 813-364-1XXX 1000–1999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 ZEPHYRHILS FL
2005-06-27 813-364-6XXX 6000–6999Assigned ONVOY, LLC - FL 937C ZEPHYRHILS FL
2005-06-27 813-364-7XXX 7000–7999Assigned ONVOY, LLC - FL 937C ZEPHYRHILS FL
2005-06-24 813-325-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-06-24 813-325-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-06-24 813-325-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-06-22 813-425-2XXX 2000–2999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2005-06-22 813-425-3XXX 3000–3999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2005-06-22 813-425-4XXX 4000–4999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2005-06-22 813-425-5XXX 5000–5999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2005-06-22 813-425-6XXX 6000–6999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2005-06-22 813-425-7XXX 7000–7999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TAMPACEN FL
2005-06-22 813-441-6XXX 6000–6999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 PLANT CITY FL
2005-06-22 813-441-7XXX 7000–7999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 PLANT CITY FL
2005-06-22 813-441-8XXX 8000–8999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 PLANT CITY FL
2005-06-22 813-567-3XXX 3000–3999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 PLANT CITY FL
2005-06-22 813-567-4XXX 4000–4999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 PLANT CITY FL
2005-06-22 813-567-5XXX 5000–5999Assigned MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 PLANT CITY FL
2005-06-20 813-777-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-06-20 813-777-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-06-20 813-777-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-06-20 813-838-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ZEPHYRHILS FL
2005-06-16 813-345-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J TAMPANTH FL
2005-06-14 813-434-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J TAMPASTH FL
2005-06-14 813-792-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J TAMPAWST FL
2005-06-14 813-793-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J TAMPAEST FL
2005-06-13 813-333-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2005-06-01 813-401-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-06-01 813-401-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-06-01 813-401-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-06-01 813-470-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2005-05-26 813-345-1XXX 1000–1999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2005-05-26 813-401-3XXX 3000–3999Assigned METROPCS, INC. 5562 TAMPA FL
2005-05-25 813-270-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-05-25 813-270-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-05-19 813-312-2XXX 2000–2999Assigned METROPCS, INC. 5562 ZEPHYRHILS FL
2005-05-19 813-359-3XXX 3000–3999Assigned METROPCS, INC. 5562 PLANT CITY FL
2005-05-19 813-470-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J TAMPACEN FL
2005-05-19 813-479-4XXX 4000–4999Assigned LINGO TELECOM, LLC 3840 ZEPHYRHILS FL
2005-05-19 813-739-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J TAMPACEN FL
2005-05-18 813-777-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-05-18 813-777-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TAMPA FL
2005-05-10 813-770-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 TAMPA FL
2005-05-09 813-448-4XXX 4000–4999Assigned METROPCS, INC. 5562 TAMPAWST FL
2005-05-09 813-470-4XXX 4000–4999Assigned LINGO TELECOM, LLC 3840 TAMPACEN FL
2005-05-05 813-496-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 TAMPACEN FL
2005-05-05 813-496-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF FLORIDA, LP - FL 7635 TAMPACEN FL
2005-05-04 813-413-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 TAMPAEST FL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.