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
2023-01-06 240-978-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2023-01-06 240-978-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2023-01-04 240-400-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2022-12-30 240-445-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2022-12-30 240-445-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2022-12-30 240-445-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2022-12-30 240-458-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
2022-12-30 240-458-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
2022-12-30 240-519-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2022-12-30 240-519-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2022-12-30 240-519-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2022-12-30 240-519-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN2 MD
2022-12-30 240-975-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2022-12-29 240-947-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2022-12-27 240-776-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LA PLATA MD
2022-12-27 240-973-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WSNGTNZN12 MD
2022-12-27 240-973-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WSNGTNZN12 MD
2022-12-22 240-769-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KEEDYSVL MD
2022-12-22 240-878-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2022-12-21 240-974-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-21 240-974-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-21 240-974-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-21 240-974-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-21 240-974-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-21 240-974-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-21 240-974-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN10 MD
2022-12-09 240-272-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2022-12-09 240-502-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2022-12-09 240-896-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J HAGERSTOWN MD
2022-12-06 240-850-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 HAGERSTOWN MD
2022-12-05 240-414-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSHNGTNZN6 MD
2022-12-05 240-872-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D WSHNGTNZN6 MD
2022-12-01 240-293-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN12 MD
2022-12-01 240-973-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN12 MD
2022-12-01 240-973-9XXX 9000–9999Assigned METROPCS, INC. 5562 WSNGTNZN12 MD
2022-11-29 240-234-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2022-11-29 240-717-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN MD
2022-11-29 240-941-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2022-11-23 240-948-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEONARDTN MD
2022-11-23 240-948-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEONARDTN MD
2022-11-23 240-948-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEONARDTN MD
2022-11-23 240-948-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEONARDTN MD
2022-11-22 240-553-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WSNG236Z13 MD
2022-11-22 240-553-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSNG236Z13 MD
2022-11-22 240-790-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSNG236Z13 MD
2022-11-22 240-923-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSHNGTNZN6 MD
2022-11-22 240-923-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSHNGTNZN6 MD
2022-11-16 240-371-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WSNGTNZN12 MD
2022-11-16 240-471-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D WSNGTNZN12 MD
2022-11-16 240-868-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D WSNGTNZN12 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.