NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 870
AIRUS, INC. - AR 19
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
2025-04-10 870-210-8XXX 8000–8999Assigned AIRUS, INC. - AR 578H ARKADLPHIA AR
2023-03-31 870-558-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H JONESBORO AR
2021-05-11 870-292-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H HOPE AR
2021-03-08 870-393-9XXX 9000–9999Assigned AIRUS, INC. - AR 578H JONESBORO AR
2021-01-29 870-664-7XXX 7000–7999Assigned AIRUS, INC. - AR 578H NEWPORT AR
2021-01-27 870-569-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H BATESVILLE AR
2020-11-11 870-641-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H JONESBORO AR
2020-03-20 870-409-9XXX 9000–9999Assigned AIRUS, INC. - AR 578H BLYTHEVL AR
2019-11-21 870-359-2XXX 2000–2999Assigned AIRUS, INC. - AR 578H HOPE AR
2019-10-15 870-600-9XXX 9000–9999Assigned AIRUS, INC. - AR 578H ASHDOWN AR
2019-10-14 870-409-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H BLYTHEVL AR
2019-10-14 870-970-1XXX 1000–1999Assigned AIRUS, INC. - AR 578H FORREST CY AR
2019-10-10 870-464-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H ARKADLPHIA AR
2019-09-03 870-497-1XXX 1000–1999Assigned AIRUS, INC. - AR 578H JONESBORO AR
2018-10-25 870-201-9XXX 9000–9999Assigned AIRUS, INC. - AR 578H NEWPORT AR
2018-10-25 870-474-8XXX 8000–8999Assigned AIRUS, INC. - AR 578H HOPE AR
2018-09-28 870-251-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H BATESVILLE AR
2018-08-13 870-393-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H JONESBORO AR
2018-03-05 870-393-1XXX 1000–1999Assigned AIRUS, INC. - AR 578H JONESBORO AR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.