NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

307 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, last 30 days
NEW CINGULAR WIRELESS PCS, LLC - DC 307
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
2020-01-17 475-237-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DANBURY CT
2020-01-17 540-783-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAFFORD VA
2020-01-17 540-783-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STAFFORD VA
2020-01-17 802-417-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RUTLAND VT
2020-01-16 551-292-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KEARNY NJ
2020-01-16 603-258-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOLLIS NH
2020-01-16 732-209-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BOUNDBROOK NJ
2020-01-16 774-946-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WHITINSVL MA
2020-01-16 978-414-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
2020-01-16 978-414-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALEM MA
2020-01-15 680-666-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LIVERPOOL NY
2020-01-15 680-666-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LIVERPOOL NY
2020-01-15 680-666-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LIVERPOOL NY
2020-01-15 680-666-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LIVERPOOL NY
2020-01-15 848-283-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOODBRIDGE NJ
2020-01-15 848-283-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOODBRIDGE NJ
2020-01-14 215-535-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHLDLPHZN4 PA
2020-01-14 215-552-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHLDLPHZN4 PA
2020-01-14 631-401-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2020-01-13 401-320-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W WARWICK RI
2020-01-13 401-326-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WESTERLY RI
2020-01-13 802-995-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWPORT VT
2020-01-13 802-995-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWPORT VT
2020-01-13 929-501-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN13 NY
2020-01-10 339-338-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LYNN MA
2020-01-10 603-518-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MANCHESTER NH
2020-01-10 640-837-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAPMAYCTHS NJ
2020-01-10 774-552-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HYANNIS MA
2020-01-10 848-837-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN NJ
2020-01-10 848-837-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN NJ
2020-01-10 848-837-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN NJ
2020-01-10 908-521-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHILLIPSBG NJ
2020-01-08 475-263-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERBURY CT
2020-01-08 585-789-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 EROCHESTER NY
2020-01-06 339-213-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2020-01-06 339-213-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2020-01-06 339-213-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2020-01-06 848-282-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BELMAR NJ
2020-01-06 908-900-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLAINFIELD NJ
2020-01-02 475-258-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORWALK CT
2019-12-30 223-230-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW OXFORD PA
2019-12-30 223-230-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW OXFORD PA
2019-12-30 914-786-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN02 NY
2019-12-30 914-786-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN02 NY
2019-12-30 929-667-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
2019-12-30 929-667-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN10 NY
2019-12-27 332-220-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2019-12-27 332-220-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN01 NY
2019-12-27 540-814-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BURNTCHMNY VA
2019-12-27 540-859-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GORDONSVL 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.