NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2016-02-16 240-219-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D RIDGE MD
2016-02-16 240-219-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D RIDGE MD
2016-02-16 240-503-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D TOMPKINSVL MD
2016-02-16 240-503-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D TOMPKINSVL MD
2016-02-16 240-556-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSNG236Z14 MD
2016-02-16 240-556-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSNG236Z14 MD
2016-02-16 240-660-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D WSNGTNZN10 MD
2016-02-16 240-660-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSNGTNZN10 MD
2016-02-16 240-666-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D NANJEMOY MD
2016-02-16 240-666-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D NANJEMOY MD
2016-02-16 240-847-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN3 MD
2016-02-16 240-901-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D LA PLATA MD
2016-02-16 240-901-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D LA PLATA MD
2016-02-15 240-661-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D LXTNPKGRML MD
2016-02-15 240-661-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D LXTNPKGRML MD
2016-02-12 240-308-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DAMASCS236 MD
2016-02-12 240-318-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSNGTNZN16 MD
2016-02-12 240-348-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D WSNGTNZN16 MD
2016-02-12 240-448-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D WALDORF MD
2016-02-12 240-448-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WALDORF MD
2016-02-12 240-641-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN3 MD
2016-02-12 240-802-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF MARYLAND, LLC - MD 7591 WSHNGTNZN2 MD
2016-02-12 240-805-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2016-02-12 240-806-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D INDIANHEAD MD
2016-02-12 240-806-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D INDIANHEAD MD
2016-02-09 240-808-6XXX 6000–6999Assigned ONVOY, LLC - MD 876D LEONARDTN MD
2016-02-09 240-808-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D LEONARDTN MD
2016-02-08 240-714-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WSHNGTNZN4 MD
2016-02-08 240-817-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D ASHTON236 MD
2016-02-08 240-817-1XXX 1000–1999Assigned ONVOY, LLC - MD 876D ASHTON236 MD
2016-02-04 240-474-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2016-02-04 240-474-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D GAITHERSBG MD
2016-02-04 240-517-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2016-01-29 240-917-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D LAUREL236 MD
2016-01-29 240-917-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D LAUREL236 MD
2016-01-27 240-847-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2016-01-27 240-847-3XXX 3000–3999Assigned ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2016-01-26 240-833-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D WSNGTNZN11 MD
2016-01-26 240-833-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D WSNGTNZN11 MD
2016-01-25 240-830-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D WSHNGTNZN5 MD
2016-01-15 240-345-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D ASHTON238 MD
2016-01-13 240-817-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-01-13 240-817-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-01-13 240-817-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-01-11 240-681-8XXX 8000–8999Assigned METROPCS, INC. 5562 BRANDYWINE MD
2016-01-08 240-657-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 FROSTBURG MD
2016-01-07 240-633-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HUGHESVL MD
2016-01-07 240-660-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2016-01-07 240-660-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2016-01-07 240-660-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.