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 318
AT&T ENTERPRISES, LLC 77
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
2024-08-12 318-494-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C CONVERSE LA
2024-08-12 318-544-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CASTOR LA
2024-08-12 318-679-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C CROWVILLE LA
2024-08-12 318-831-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C ST LANDRY LA
2024-08-12 318-885-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C GEORGETOWN LA
2024-08-12 318-886-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C FTNECESSTY LA
2024-07-30 318-839-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C GRAND CANE LA
2024-07-30 318-845-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C HARRISONBG LA
2024-07-30 318-849-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C LISBON LA
2024-07-30 318-851-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C SALINE LA
2016-08-09 318-701-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C SHREVEPORT LA
2015-01-29 318-626-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SHREVEPORT LA
2015-01-23 318-208-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C SHREVEPORT LA
2014-08-20 318-716-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C SHREVEPORT LA
2013-12-10 318-996-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C MOORINGSPT LA
2013-10-11 318-490-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C OAK GROVE LA
2013-01-23 318-217-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WATERPROOF LA
2013-01-23 318-301-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ST JOSEPH LA
2013-01-23 318-421-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MONTEREY LA
2013-01-23 318-467-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C NEWELLTON LA
2013-01-23 318-501-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C EPPS LA
2013-01-23 318-502-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C COLUMBIA LA
2013-01-23 318-515-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C MER ROUGE LA
2013-01-23 318-531-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SICILY IS LA
2013-01-23 318-595-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DUBACH LA
2013-01-23 318-599-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CALHOUN LA
2013-01-23 318-745-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C DOYLINE LA
2013-01-23 318-843-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C GIBSLAND LA
2013-01-23 318-906-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C LOGANSPORT LA
2013-01-23 318-933-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C KEATCHIE LA
2013-01-23 318-935-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BENTON LA
2013-01-23 318-973-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C GREENWOOD LA
2013-01-23 318-995-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C OIL CITY LA
2012-12-05 318-702-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C COUSHATTA LA
2012-11-26 318-225-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C HOMER LA
2012-11-26 318-274-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C GRAMBLING LA
2012-11-26 318-395-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C JONESBORO LA
2012-11-26 318-478-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C BERNICE LA
2012-11-26 318-488-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DELHI LA
2012-11-26 318-615-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C HAUGHTON LA
2012-11-26 318-624-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C HAYNESVL LA
2012-11-26 318-728-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C RAYVILLE LA
2012-11-26 318-974-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BASTROP LA
2012-11-26 318-982-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C FARMERVL LA
2012-11-14 318-367-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C WINNSBORO LA
2012-11-14 318-493-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C TALLULAH LA
2012-11-14 318-552-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C LKPROVIDNC LA
2012-11-14 318-575-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C MANSFIELD LA
2012-11-14 318-582-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MONROE LA
2012-11-14 318-598-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C STERLINGTN LA

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.