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 515
LEVEL 3 COMMUNICATIONS, LLC - IA 98
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
2023-02-10 515-862-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 STORY CITY IA
2022-12-15 515-377-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 EARLHAM IA
2022-12-15 515-405-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 RENWICK IA
2022-12-15 515-466-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WHITTEMORE IA
2022-12-15 515-489-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 JEWELL IA
2022-12-15 515-529-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 COLFAX IA
2022-12-15 515-534-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 STUART IA
2022-12-15 515-550-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BRADGATE IA
2022-12-15 515-565-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LIVERMORE IA
2022-12-15 515-600-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LUVERNE IA
2022-12-15 515-622-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 GILMORE CY IA
2022-12-15 515-716-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 PRAIRIE CY IA
2022-12-15 515-755-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WESLEY IA
2022-12-15 515-784-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DAWSON IA
2022-12-15 515-842-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 VAN METER IA
2022-12-15 515-969-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DALLAS CTR IA
2022-12-06 515-581-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ADEL IA
2022-12-06 515-762-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 RUNNELLS IA
2022-12-06 515-877-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 POLK CITY IA
2022-12-06 515-915-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 GRANGER IA
2022-11-29 515-415-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2022-11-09 515-588-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 EAGLEGROVE IA
2022-11-07 515-391-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 JEFFERSON IA
2022-05-03 515-671-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2022-04-28 515-461-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2022-03-15 515-666-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2022-01-25 515-690-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 INDIANOLA IA
2021-12-21 515-666-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2021-08-04 515-666-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2021-06-24 515-654-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WEBSTER CY IA
2021-06-03 515-666-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2021-05-20 515-456-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BANCROFT IA
2021-03-29 515-738-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 GRAND JCT IA
2020-12-01 515-666-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2020-08-19 515-666-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2019-12-18 515-236-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BOONE IA
2019-10-24 515-461-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2019-09-16 515-461-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2019-08-08 515-461-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2018-11-01 515-410-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2018-08-01 515-642-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 PERRY IA
2018-05-29 515-620-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 AMES IA
2017-09-14 515-204-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-06-22 515-381-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-06-08 515-348-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-06-07 515-859-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ALDEN IA
2017-05-03 515-348-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-02-22 515-215-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 NEVADA IA
2017-02-17 515-646-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LEDYARD IA
2017-02-15 515-834-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DE SOTO 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.