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 435
FIRSTDIGITAL COMMUNICATIONS, LLC 29
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
2022-05-20 435-301-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT
2022-04-14 435-289-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D RICHFIELD UT
2022-04-14 435-375-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT
2022-04-14 435-701-9XXX 9000–9999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D CEDAR CITY UT
2022-04-01 435-418-6XXX 6000–6999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D BEAVER UT
2020-02-05 435-246-8XXX 8000–8999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D BRIGHAM CY UT
2019-05-28 435-522-1XXX 1000–1999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT
2018-09-20 435-515-4XXX 4000–4999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D BRIGHAM CY UT
2018-08-09 435-515-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D BRIGHAM CY UT
2017-07-03 435-704-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D CEDAR CITY UT
2016-10-12 435-610-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D NEPHI UT
2016-10-12 435-670-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D SALINA UT
2016-10-07 435-625-2XXX 2000–2999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D BEAVER UT
2015-12-02 435-922-2XXX 2000–2999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT
2015-09-30 435-268-4XXX 4000–4999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D TOOELE UT
2015-09-24 435-558-2XXX 2000–2999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D RICHFIELD UT
2013-06-07 435-310-3XXX 3000–3999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D BEAVER UT
2013-06-07 435-602-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D PARK CITY UT
2013-02-08 435-574-5XXX 5000–5999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT
2012-09-17 435-772-8XXX 8000–8999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT
2011-06-24 435-633-2XXX 2000–2999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D RICHFIELD UT
2011-06-24 435-994-3XXX 3000–3999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LOGAN UT
2010-03-01 435-767-9XXX 9000–9999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT
2009-07-09 435-657-7XXX 7000–7999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D HEBER CITY UT
2009-04-29 435-248-1XXX 1000–1999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D TOOELE UT
2009-03-24 435-267-1XXX 1000–1999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D CEDAR CITY UT
2009-03-24 435-374-0XXX 0000–0999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D LOGAN UT
2009-03-24 435-538-1XXX 1000–1999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D BRIGHAM CY UT
2007-04-06 435-256-6XXX 6000–6999Assigned FIRSTDIGITAL COMMUNICATIONS, LLC 716D ST GEORGE UT

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.