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 830
AT&T ENTERPRISES, LLC 34
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
2012-11-12 830-376-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C BATESVILLE TX
2011-12-21 830-358-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C NEWBRANFLS TX
2011-11-14 830-351-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C LULING TX
2011-11-14 830-457-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BIG WELLS TX
2011-11-14 830-579-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CAMPBELLTN TX
2011-11-14 830-999-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CATARINA TX
2011-09-19 830-302-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C NEWBRANFLS TX
2011-03-09 830-420-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C MARION TX
2011-03-09 830-584-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C HONDO TX
2011-03-09 830-784-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C CHRISTINE TX
2011-03-01 830-202-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C COTULLA TX
2011-03-01 830-239-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C RUNGE TX
2011-03-01 830-254-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C KARNESCITY TX
2011-03-01 830-322-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CARRIZOSPG TX
2011-03-01 830-328-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BANDERA TX
2011-03-01 830-365-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C LA PRYOR TX
2011-03-01 830-468-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C ASHERTON TX
2011-03-01 830-480-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C PLEASANTON TX
2011-03-01 830-538-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CASTROVL TX
2011-03-01 830-583-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C KENEDY TX
2011-03-01 830-663-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C DEVINE TX
2011-03-01 830-746-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C PEARSALL TX
2011-03-01 830-751-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C MEDINALAKE TX
2011-03-01 830-762-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C LACOSTE TX
2011-03-01 830-772-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C LYTLE TX
2011-03-01 830-783-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C POTEET TX
2011-03-01 830-854-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C CRYSTAL CY TX
2011-03-01 830-867-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C BRACKETTVL TX
2011-03-01 830-900-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C UVALDE TX
2011-03-01 830-988-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SABINAL TX
2010-07-19 830-463-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SEGUIN TX
2006-11-10 830-535-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C PIPE CREEK TX
2006-06-15 830-837-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C NEWBRANFLS TX
2006-01-18 830-325-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C EAGLE PASS TX

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.