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 540
NEW CINGULAR WIRELESS PCS, LLC - DC 203
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
2026-03-18 540-719-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BURNTCHMNY VA
2026-03-06 540-319-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEXINGTON VA
2025-10-17 540-910-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WAYNESBORO VA
2025-10-01 540-806-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RADFORD VA
2025-10-01 540-814-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BURNTCHMNY VA
2025-08-20 540-606-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ELKTON VA
2024-11-23 540-836-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WAYNESBORO VA
2024-11-08 540-704-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARRISONBG VA
2024-08-19 540-814-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BURNTCHMNY VA
2024-05-10 540-926-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2024-05-10 540-983-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2024-05-10 540-983-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2024-05-10 540-985-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2024-05-10 540-985-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2024-02-09 540-704-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARRISONBG VA
2024-02-09 540-704-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARRISONBG VA
2024-01-05 540-746-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARRISONBG VA
2023-12-04 540-790-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2023-12-04 540-790-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2023-10-26 540-571-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
2023-10-26 540-571-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
2023-10-26 540-571-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
2023-10-26 540-571-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
2023-10-26 540-571-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDECKSBG VA
2023-10-06 540-873-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAFFORD VA
2023-08-24 540-990-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DAHLGREN VA
2023-08-15 540-926-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROANOKE VA
2023-07-27 540-305-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRONTROYAL VA
2022-05-17 540-807-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOUISA VA
2022-02-07 540-203-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHANCELLOR VA
2022-02-07 540-203-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHANCELLOR VA
2022-01-05 540-648-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MONTEREY VA
2021-12-06 540-500-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LOUISA VA
2021-10-08 540-873-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAFFORD VA
2021-10-08 540-873-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAFFORD VA
2021-09-14 540-897-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PAINT BANK VA
2021-04-26 540-734-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHANCELLOR VA
2021-04-26 540-734-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHANCELLOR VA
2021-04-26 540-913-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WINCHESTER VA
2021-04-26 540-913-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WINCHESTER VA
2021-04-26 540-913-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WINCHESTER VA
2021-04-14 540-816-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BEDFORD VA
2021-03-24 540-707-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BEDFORD VA
2021-03-09 540-686-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WINCHESTER VA
2021-03-05 540-990-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DAHLGREN VA
2020-12-02 540-859-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GORDONSVL VA
2020-11-25 540-734-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHANCELLOR VA
2020-11-24 540-714-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WARRENTON VA
2020-10-28 540-690-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WARRENTON VA
2020-09-25 540-695-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FLOYD VA

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.