NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 352
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 68
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2024-10-23 352-736-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CRYSTALRIV FL
2024-09-30 352-285-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OCALA FL
2024-03-07 352-576-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2024-03-07 352-576-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2023-02-01 352-774-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GAINESVL FL
2023-01-11 352-757-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GAINESVL FL
2021-03-05 352-791-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOWEYINHLS FL
2016-03-23 352-405-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRONSON FL
2015-10-29 352-973-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEESBURG FL
2015-08-03 352-448-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GAINESVL FL
2015-06-18 352-571-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WILDWOOD FL
2013-05-13 352-418-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BUSHNELL FL
2013-05-13 352-643-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WILDWOOD FL
2012-11-13 352-415-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GAINESVL FL
2012-07-02 352-282-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OCALA FL
2012-03-28 352-643-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WILDWOOD FL
2011-01-12 352-519-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GAINESVL FL
2010-07-08 352-658-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TRENTON FL
2009-09-29 352-327-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GAINESVL FL
2009-06-22 352-414-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OCALA FL
2008-07-02 352-508-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TAVARES FL
2008-06-24 352-561-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LADY LAKE FL
2007-03-09 352-835-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WEEKICHSPG FL
2007-01-09 352-432-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CLERMONT FL
2006-09-28 352-537-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SLRSPGSHRS FL
2006-09-28 352-771-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 UMATILLA FL
2006-08-31 352-390-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OCALA FL
2006-07-18 352-233-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELLEVIEW FL
2006-06-23 352-503-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 INVERNESS FL
2006-01-13 352-277-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BROOKSVL FL
2006-01-12 352-200-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WEEKICHSPG FL
2006-01-12 352-560-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 INVERNESS FL
2006-01-12 352-835-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WEEKICHSPG FL
2005-11-28 352-432-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CLERMONT FL
2005-08-29 352-227-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CLERMONT FL
2005-08-16 352-200-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WEEKICHSPG FL
2005-06-28 352-200-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WEEKICHSPG FL
2005-01-21 352-608-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TRILACOCHE FL
2004-11-23 352-360-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEESBURG FL
2004-11-23 352-685-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALT SPG FL
2004-10-29 352-478-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 KEYSTN HTS FL
2004-10-13 352-289-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FOREST 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.