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 513
TELEPORT COMMUNICATIONS AMERICA, LLC - OH 45
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
2023-05-09 513-747-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 HAMILTON OH
2022-05-10 513-955-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2021-12-08 513-949-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 WAYNESVL OH
2021-12-01 513-928-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2020-07-13 513-689-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LEBANON OH
2020-04-24 513-810-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2020-01-14 513-810-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2019-06-10 513-216-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 BETHEL OH
2018-05-02 513-514-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2016-10-06 513-975-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2016-02-12 513-975-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2016-02-12 513-975-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2016-02-12 513-975-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2014-06-27 513-839-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 OXFORD OH
2014-06-13 513-788-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 HARRISON OH
2014-05-30 513-915-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MIDDLETOWN OH
2014-03-04 513-657-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2014-03-04 513-657-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2014-02-27 513-592-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2013-10-18 513-714-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 HAMILTON OH
2013-07-15 513-972-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MASON OH
2012-07-20 513-901-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 WILLIAMSBG OH
2012-06-20 513-402-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 MONROE OH
2012-01-11 513-512-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2011-12-29 513-580-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2011-08-11 513-394-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2011-08-11 513-394-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2011-02-10 513-900-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LTL MIAMI OH
2011-02-10 513-900-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LTL MIAMI OH
2011-02-10 513-900-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LTL MIAMI OH
2011-02-10 513-900-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LTL MIAMI OH
2010-05-07 513-409-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LEBANON OH
2010-02-01 513-712-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 BETHANY OH
2008-11-12 513-453-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LTL MIAMI OH
2007-09-28 513-824-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2007-08-23 513-718-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLERMONT OH
2006-04-03 513-341-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 HAMILTON OH
2005-09-02 513-898-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2005-09-02 513-898-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2005-09-02 513-898-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2005-09-02 513-898-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2005-04-05 513-353-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2005-04-05 513-353-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2004-08-24 513-437-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 SEVEN MILE OH
2004-07-13 513-277-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH

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.