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 307
AIRUS, INC. - WY 44
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
2025-04-14 307-318-7XXX 7000–7999Assigned AIRUS, INC. - WY 581H WRIGHT WY
2025-04-14 307-419-3XXX 3000–3999Assigned AIRUS, INC. - WY 581H CODY WY
2025-04-14 307-479-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H POWELL WY
2021-04-01 307-393-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H EVANSTON WY
2021-03-29 307-368-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H AFTON WY
2021-02-09 307-225-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H LARAMIE WY
2020-11-12 307-522-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H ROCK SPG WY
2020-09-02 307-243-0XXX 0000–0999Assigned AIRUS, INC. - WY 581H CASPER WY
2020-07-27 307-487-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H GILLETTE WY
2020-05-26 307-249-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H JACKSON WY
2020-05-26 307-285-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H BUFFALO WY
2020-05-26 307-624-4XXX 4000–4999Assigned AIRUS, INC. - WY 581H DOUGLAS WY
2020-05-18 307-218-0XXX 0000–0999Assigned AIRUS, INC. - WY 581H SHERIDAN WY
2020-03-27 307-650-2XXX 2000–2999Assigned AIRUS, INC. - WY 581H CHEYENNE WY
2020-03-12 307-207-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H LAKE WY
2020-02-21 307-204-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H CODY WY
2019-12-12 307-227-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H MAMMOTH WY
2019-10-10 307-228-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H GILLETTE WY
2019-10-08 307-227-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H MAMMOTH WY
2019-02-04 307-316-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H CHEYENNE WY
2018-12-07 307-207-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H LAKE WY
2018-11-29 307-439-0XXX 0000–0999Assigned AIRUS, INC. - WY 581H CASPER WY
2018-11-28 307-522-0XXX 0000–0999Assigned AIRUS, INC. - WY 581H ROCK SPG WY
2018-10-17 307-464-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H WRIGHT WY
2018-07-09 307-249-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H JACKSON WY
2018-04-26 307-228-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H GILLETTE WY
2018-02-07 307-204-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H CODY WY
2018-02-06 307-227-0XXX 0000–0999Assigned AIRUS, INC. - WY 581H MAMMOTH WY
2018-02-05 307-343-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H LARAMIE WY
2018-02-02 307-215-0XXX 0000–0999Assigned AIRUS, INC. - WY 581H CASPER WY
2018-02-02 307-226-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H AFTON WY
2018-02-02 307-271-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H POWELL WY
2018-02-02 307-288-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H EVANSTON WY
2018-02-02 307-370-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H RAWLINS WY
2018-02-02 307-840-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H RIVERTON WY
2017-08-07 307-298-2XXX 2000–2999Assigned AIRUS, INC. - WY 581H DOUGLAS WY
2017-08-07 307-522-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H ROCK SPG WY
2017-07-10 307-414-8XXX 8000–8999Assigned AIRUS, INC. - WY 581H CHEYENNE WY
2017-07-03 307-414-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H CHEYENNE WY
2017-02-09 307-203-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H JACKSON WY
2017-01-09 307-621-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H BUFFALO WY
2016-12-08 307-209-9XXX 9000–9999Assigned AIRUS, INC. - WY 581H ROCK SPG WY
2016-10-31 307-683-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H SHERIDAN WY
2015-08-25 307-414-1XXX 1000–1999Assigned AIRUS, INC. - WY 581H CHEYENNE WY

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.