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 712
LEVEL 3 COMMUNICATIONS, LLC - IA 99
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
2026-04-09 712-205-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 AUDUBON IA
2026-04-09 712-467-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SIDNEY IA
2026-04-02 712-280-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 HARLAN IA
2026-04-02 712-633-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BEDFORD IA
2025-05-14 712-992-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LOGAN IA
2024-03-19 712-232-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SPENCER IA
2023-12-13 712-381-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ROCKRAPIDS IA
2023-09-21 712-461-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SIBLEY IA
2023-09-21 712-904-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 AKRON IA
2023-05-23 712-463-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SIOUX CTR IA
2023-05-11 712-653-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MANNING IA
2023-02-15 712-897-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 AVOCA IA
2022-12-15 712-337-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ARNOLDS PK IA
2022-12-15 712-394-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BELOIT IA
2022-12-15 712-397-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WHITING IA
2022-12-15 712-409-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SILVERCITY IA
2022-12-15 712-512-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MINEOLA IA
2022-12-15 712-543-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 UNDERWOOD IA
2022-12-15 712-591-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 HAMBURG IA
2022-12-15 712-599-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CORECTINVL IA
2022-12-15 712-612-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 E HARRISBG IA
2022-12-15 712-787-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 NEOLA IA
2022-12-15 712-831-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LAKE PARK IA
2022-12-15 712-840-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MAPLETON IA
2022-12-15 712-845-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LAURENS IA
2022-12-15 712-955-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MERRILL IA
2022-12-14 712-391-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ANTHON IA
2022-11-16 712-284-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ALTA IA
2022-11-02 712-640-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LAKE CITY IA
2022-06-09 712-207-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SHELBY IA
2022-02-23 712-399-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MALVERN IA
2022-01-26 712-671-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SHENANDOAH IA
2022-01-25 712-267-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DENISON IA
2022-01-25 712-414-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 RED OAK IA
2022-01-25 712-532-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 EMMETSBURG IA
2022-01-25 712-695-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CLARINDA IA
2022-01-25 712-977-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MILFORD IA
2021-09-27 712-524-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 COUNCILBLF IA
2020-11-17 712-693-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SAC CITY IA
2020-11-17 712-966-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LE MARS IA
2020-04-22 712-356-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ATLANTIC IA
2020-02-25 712-883-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DANBURY IA
2020-01-31 712-339-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SPIRITLAKE IA
2019-10-01 712-634-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CARROLL IA
2019-06-14 712-545-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CRESCENT IA
2019-06-14 712-642-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MISSOURVLY IA
2019-06-14 712-847-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CARTERLAKE IA
2019-06-06 712-538-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 POCAHONTAS IA
2019-06-06 712-765-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ESTHERVL IA
2018-09-05 712-221-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CHEROKEE 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.