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 254
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
2023-06-02 254-726-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C GORDON TX
2013-12-10 254-840-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C MCGREGOR TX
2013-12-10 254-853-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MOODY TX
2013-12-10 254-859-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C EDDY TX
2013-12-10 254-881-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C ROSENTHAL TX
2013-10-10 254-857-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C LORENA TX
2013-02-01 254-233-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C STRAWN TX
2013-02-01 254-938-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C TROY TX
2012-11-14 254-735-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C CISCO TX
2012-11-12 254-252-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MARLIN TX
2012-11-12 254-831-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BELTON TX
2012-01-13 254-456-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C OGLESBY TX
2012-01-13 254-605-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C CAMERON TX
2011-10-28 254-212-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C BRECKENRDG TX
2011-10-28 254-488-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C EASTLAND TX
2011-10-28 254-647-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C RANGER TX
2011-10-21 254-765-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WORTHAM TX
2011-09-28 254-263-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C REAGAN TX
2011-09-06 254-374-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C GHOLSON TX
2011-08-30 254-239-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C TEMPLE TX
2011-08-30 254-283-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C HILLSBORO TX
2011-08-30 254-435-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C MERIDIAN TX
2011-08-30 254-472-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MEXIA TX
2011-08-30 254-687-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ITASCA TX
2011-08-30 254-739-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C TEAGUE TX
2011-08-30 254-822-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C LEROY TX
2011-08-30 254-826-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C WEST TX
2011-08-30 254-836-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CHINA SPG TX
2011-08-30 254-845-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C SO BOSQUE TX
2011-08-30 254-863-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C AXTELL TX
2011-08-30 254-875-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C HALLSBURG TX
2011-08-30 254-876-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MART TX
2010-09-17 254-273-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C BARTLETT TX
2005-04-06 254-339-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C WACO 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.