NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 319
LEVEL 3 COMMUNICATIONS, LLC - IA 71
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
2026-04-09 319-699-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ALLISON IA
2024-11-14 319-502-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WATERLOO IA
2024-02-27 319-403-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2023-12-13 319-225-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 AMANA IA
2023-10-04 319-867-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 IOWA CITY IA
2023-02-15 319-652-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 TRAER IA
2023-02-15 319-839-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MARENGO IA
2023-02-09 319-995-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WINFIELD IA
2023-01-24 319-307-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DUNKERTON IA
2023-01-24 319-309-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 GUERNSEY IA
2023-01-24 319-314-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 READLYN IA
2022-12-15 319-281-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 HUDSON IA
2022-12-15 319-303-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DENVER IA
2022-12-15 319-305-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MT VERNON IA
2022-12-15 319-422-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 PARKERSBG IA
2022-12-15 319-441-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CENTER PT IA
2022-10-26 319-306-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 JESUP IA
2022-10-17 319-421-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SHELL ROCK IA
2022-10-13 319-893-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2022-07-15 319-837-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WEST POINT IA
2022-05-06 319-244-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ELY IA
2022-01-25 319-222-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDARFALLS IA
2022-01-25 319-344-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 COLUMBSJCT IA
2022-01-25 319-460-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WASHINGTON IA
2022-01-25 319-500-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 VINTON IA
2022-01-25 319-881-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WAPELLO IA
2021-12-02 319-388-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DONNELLSON IA
2021-12-01 319-367-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 NEW LONDON IA
2021-12-01 319-528-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DENMARK IA
2021-11-21 319-619-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MONTROSE IA
2021-10-19 319-217-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MTPLEASANT IA
2021-09-14 319-853-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 NO LIBERTY IA
2020-09-29 319-386-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MEDIAPOLIS IA
2020-05-06 319-419-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WAVERLY IA
2019-06-28 319-844-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MONTICELLO IA
2019-05-15 319-645-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 TIFFIN IA
2019-04-08 319-727-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 COGGON IA
2018-10-02 319-595-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WATERLOO IA
2018-09-28 319-206-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2018-06-29 319-207-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MORLEY IA
2018-06-29 319-216-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MARTELLE IA
2018-06-29 319-218-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 OLIN IA
2018-05-07 319-209-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BURLINGTON IA
2018-03-21 319-259-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 IOWA CITY IA
2017-11-01 319-249-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2017-06-05 319-249-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CEDAR RPDS IA
2017-05-16 319-660-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WILLIAMSBG IA
2017-05-10 319-245-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 GRUNDY CTR IA
2017-05-09 319-299-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BELLEPLAIN IA
2017-02-23 319-975-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ANAMOSA IA

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.