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 918
AT&T ENTERPRISES, LLC 60
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2024-08-12 918-818-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DELAWARE OK
2024-08-08 918-228-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C ALLUWE OK
2015-07-17 918-280-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C TULSA OK
2015-05-21 918-701-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C JENKS OK
2015-05-14 918-490-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C EUFAULA OK
2015-05-14 918-604-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C PAWHUSKA OK
2015-05-14 918-731-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DEPEW OK
2015-05-14 918-917-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C WILBURTON OK
2015-04-15 918-862-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C OILTON OK
2015-03-06 918-358-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C CLEVELAND OK
2015-03-06 918-807-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BRISTOW OK
2015-03-06 918-916-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MCALESTER OK
2015-03-06 918-964-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C GROVE OK
2014-11-04 918-861-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C TULSA OK
2014-04-14 918-992-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C TULSA OK
2013-01-24 918-436-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C POCOLA OK
2012-11-09 918-503-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MULDROW OK
2011-11-09 918-235-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C SALLISAW OK
2011-11-09 918-285-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CUSHING OK
2011-11-09 918-544-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MIAMI OK
2011-11-09 918-674-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C QUAPAW OK
2011-11-09 918-675-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C COMMERCE OK
2011-11-09 918-738-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C RALSTON OK
2011-11-09 918-842-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SOCOFFEYVL OK
2011-11-09 918-848-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C FAIRLAND OK
2011-11-09 918-942-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C TALIHINA OK
2011-11-09 918-962-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C SPIRO OK
2011-10-21 918-383-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C NEW HOME OK
2011-09-13 918-380-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C BRAGGS OK
2011-02-02 918-932-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C TULSA OK
2010-11-04 918-203-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C FORTGIBSON OK
2010-11-04 918-288-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SPERRY OK
2010-11-04 918-297-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C HARTSHORNE OK
2010-11-04 918-304-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C OKMULGEE OK
2010-11-04 918-319-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C HENRYETTA OK
2010-11-04 918-321-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C KIEFER OK
2010-11-04 918-373-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C PRYOR OK
2010-11-04 918-532-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C COPAN OK
2010-11-04 918-537-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C MUSKOGEE OK
2010-11-04 918-713-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C VINITA OK
2010-11-04 918-716-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C OKEMAH OK
2010-11-04 918-729-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C DRUMRIGHT OK
2010-11-04 918-762-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C PAWNEE OK
2010-11-04 918-772-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C TAHLEQUAH OK
2010-11-04 918-789-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C CHELSEA OK
2010-11-04 918-860-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DEWEY OK
2010-11-04 918-937-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C KETCHUM OK
2010-11-04 918-967-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C STIGLER OK
2009-12-11 918-265-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C BOKOSHE OK
2009-10-16 918-876-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C BARTLESVL OK

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.