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 209
PACIFIC BELL 37
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
2019-12-02 209-469-5XXX 5000–5999Assigned PACIFIC BELL 9740 STOCKTON CA
2015-06-29 209-455-8XXX 8000–8999Assigned PACIFIC BELL 9740 MERCED CA
2014-03-03 209-325-1XXX 1000–1999Assigned PACIFIC BELL 9740 MERCED CA
2014-03-03 209-325-2XXX 2000–2999Assigned PACIFIC BELL 9740 MERCED CA
2009-03-16 209-564-3XXX 3000–3999Assigned PACIFIC BELL 9740 MERCED CA
2009-03-16 209-564-4XXX 4000–4999Assigned PACIFIC BELL 9740 MERCED CA
2009-03-16 209-564-5XXX 5000–5999Assigned PACIFIC BELL 9740 MERCED CA
2007-12-19 209-888-3XXX 3000–3999Assigned PACIFIC BELL 9740 STOCKTON CA
2005-11-22 209-735-3XXX 3000–3999Assigned PACIFIC BELL 9740 MODESTO CA
2005-11-22 209-735-4XXX 4000–4999Assigned PACIFIC BELL 9740 MODESTO CA
2005-11-22 209-735-5XXX 5000–5999Assigned PACIFIC BELL 9740 MODESTO CA
2005-11-22 209-735-6XXX 6000–6999Assigned PACIFIC BELL 9740 MODESTO CA
2005-11-22 209-735-7XXX 7000–7999Assigned PACIFIC BELL 9740 MODESTO CA
2005-10-03 209-228-0XXX 0000–0999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-1XXX 1000–1999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-2XXX 2000–2999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-3XXX 3000–3999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-4XXX 4000–4999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-5XXX 5000–5999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-6XXX 6000–6999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-7XXX 7000–7999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-8XXX 8000–8999Assigned PACIFIC BELL 9740 MERCED CA
2005-10-03 209-228-9XXX 9000–9999Assigned PACIFIC BELL 9740 MERCED CA
2004-09-01 209-710-6XXX 6000–6999Assigned PACIFIC BELL 9740 LOS BANOS CA
2004-08-20 209-221-6XXX 6000–6999Assigned PACIFIC BELL 9740 TRACY CA
2004-08-20 209-221-7XXX 7000–7999Assigned PACIFIC BELL 9740 TRACY CA
2004-08-20 209-221-8XXX 8000–8999Assigned PACIFIC BELL 9740 TRACY CA
2002-07-18 209-359-0XXX 0000–0999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-1XXX 1000–1999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-2XXX 2000–2999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-3XXX 3000–3999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-4XXX 4000–4999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-5XXX 5000–5999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-6XXX 6000–6999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-7XXX 7000–7999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-8XXX 8000–8999Assigned PACIFIC BELL 9740 MERCED CA
2002-07-18 209-359-9XXX 9000–9999Assigned PACIFIC BELL 9740 MERCED CA

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.