NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 — NPA 240
BANDWIDTH.COM CLEC, LLC - MD 3
OPENTACT INC. 1
ONVOY, LLC - MD 1
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
2023-05-03 240-990-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2023-05-03 240-990-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2023-05-02 240-272-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-05-02 240-272-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-05-02 240-340-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-05-02 240-400-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-05-02 240-445-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-05-02 240-445-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-05-02 240-937-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2023-04-20 240-272-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-04-20 240-519-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-04-20 240-926-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J HUGHESVL MD
2023-04-20 240-987-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-20 240-987-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-20 240-987-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-20 240-987-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-20 240-987-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-20 240-987-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-20 240-989-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-04-20 240-989-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-04-18 240-982-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2023-04-18 240-982-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2023-04-05 240-987-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-05 240-987-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-05 240-987-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-04-05 240-987-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-03-30 240-679-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J FRIENDSVL MD
2023-03-23 240-541-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2023-03-23 240-541-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2023-03-22 240-610-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2023-03-22 240-610-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2023-03-22 240-665-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2023-03-22 240-978-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2023-03-22 240-978-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2023-03-22 240-978-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2023-03-21 240-679-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D FRIENDSVL MD
2023-03-21 240-907-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-03-21 240-907-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2023-03-21 240-983-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D HAGERSTOWN MD
2023-03-21 240-983-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D HAGERSTOWN MD
2023-03-20 240-202-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D HIGHFIELD MD
2023-03-15 240-263-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-03-15 240-263-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-03-15 240-263-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-03-15 240-263-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2023-03-15 240-814-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2023-03-15 240-928-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-03-08 240-963-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2023-03-06 240-445-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSHNGTNZN2 MD
2023-03-06 240-445-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D WSHNGTNZN2 MD

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.