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
CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 16
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
2022-04-22 435-856-4XXX 4000–4999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D NEPHI UT
2022-04-22 435-856-5XXX 5000–5999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D NEPHI UT
2019-09-12 435-253-9XXX 9000–9999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D FILLMORE UT
2019-09-12 435-500-1XXX 1000–1999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D DELTA UT
2017-11-30 435-777-1XXX 1000–1999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D HEBER CITY UT
2016-12-05 435-515-1XXX 1000–1999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D BRIGHAM CY UT
2016-03-08 435-268-8XXX 8000–8999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D TOOELE UT
2014-10-15 435-261-5XXX 5000–5999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D BEAVER UT
2014-03-03 435-776-1XXX 1000–1999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D PARK CITY UT
2013-07-31 435-218-0XXX 0000–0999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D ST GEORGE UT
2013-07-31 435-383-0XXX 0000–0999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D CEDAR CITY UT
2013-07-31 435-799-0XXX 0000–0999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D LOGAN UT
2009-07-27 435-250-8XXX 8000–8999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D NEPHI UT
2008-03-19 435-287-0XXX 0000–0999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D RICHFIELD UT
2008-03-19 435-287-1XXX 1000–1999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D RICHFIELD UT
2008-03-19 435-287-2XXX 2000–2999Assigned CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV 791D RICHFIELD 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.