NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
SOUTHWESTERN BELL 32
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
2018-04-09 918-939-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 TULSA OK
2013-11-04 918-679-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 CLAREMORE OK
2013-04-17 918-467-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 DELAWARE OK
2013-04-17 918-567-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 TALIHINA OK
2012-01-12 918-977-2XXX 2000–2999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2012-01-12 918-977-9XXX 9000–9999Assigned SOUTHWESTERN BELL 9533 BARTLESVL OK
2010-05-10 918-550-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 TULSA OK
2010-05-10 918-550-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 TULSA OK
2008-01-31 918-772-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-11-17 918-577-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 MUSKOGEE OK
2006-11-17 918-577-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 MUSKOGEE OK
2006-09-15 918-713-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 VINITA OK
2006-08-15 918-444-0XXX 0000–0999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-2XXX 2000–2999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-4XXX 4000–4999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-08-15 918-444-9XXX 9000–9999Assigned SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-03-23 918-376-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 OWASSO OK
2002-07-19 918-626-2XXX 2000–2999Assigned SOUTHWESTERN BELL 9533 CEDARS OK
2002-07-19 918-626-9XXX 9000–9999Assigned SOUTHWESTERN BELL 9533 CEDARS OK
2002-07-19 918-875-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 MOFFETT OK
2002-07-19 918-875-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 MOFFETT OK

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.