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 319
TELEPORT COMMUNICATIONS AMERICA, LLC - IA 24
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
2024-03-08 319-445-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 REINBECK IA
2023-06-02 319-391-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDAR RPDS IA
2023-04-04 319-401-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 TRIPOLI IA
2023-01-10 319-661-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WILLIAMSBG IA
2022-10-24 319-636-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 HAZLETON IA
2022-10-07 319-662-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CONROY IA
2022-06-22 319-893-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDAR RPDS IA
2021-12-29 319-317-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDAR RPDS IA
2020-02-07 319-458-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WASHINGTON IA
2020-01-03 319-645-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 TIFFIN IA
2019-09-03 319-284-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 OELWEIN IA
2019-04-04 319-888-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WATERLOO IA
2019-03-19 319-204-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 MTPLEASANT IA
2018-11-06 319-775-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDAR RPDS IA
2018-09-12 319-670-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 KEOKUK IA
2017-04-20 319-251-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 ANAMOSA IA
2014-10-24 319-859-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDARFALLS IA
2014-06-06 319-576-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 BURLINGTON IA
2013-04-18 319-559-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WAVERLY IA
2013-01-30 319-505-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WATERLOO IA
2012-05-14 319-376-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 FT MADISON IA
2012-04-11 319-499-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 IOWA CITY IA
2012-02-14 319-332-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 INDEPNDNCE IA
2010-05-06 319-423-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDAR RPDS IA

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.