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
2019-10-11 240-875-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D MOUNT AIRY MD
2019-10-10 240-306-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2019-10-10 240-306-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GAITHERSBG MD
2019-10-10 240-610-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2019-10-10 240-639-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2019-10-10 240-639-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2019-10-10 240-665-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2019-10-01 240-337-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN5 MD
2019-09-26 240-693-9XXX 9000–9999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G WALKERSVL MD
2019-09-23 240-866-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J HAGERSTOWN MD
2019-09-23 240-915-6XXX 6000–6999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G NEW MARKET MD
2019-09-18 240-679-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRIENDSVL MD
2019-09-16 240-697-6XXX 6000–6999Assigned CORETEL MARYLAND, INC. - MD 469J MECHANCSVL MD
2019-09-16 240-829-4XXX 4000–4999Assigned CORETEL MARYLAND, INC. - MD 469J EMMITSBURG MD
2019-09-13 240-639-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2019-09-13 240-639-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2019-09-12 240-610-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN4 MD
2019-09-12 240-610-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN4 MD
2019-09-12 240-664-3XXX 3000–3999Assigned METROPCS, INC. 5562 CUMBERLAND MD
2019-09-10 240-564-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL236 MD
2019-09-10 240-598-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HUGHESVL MD
2019-09-10 240-659-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2019-09-10 240-659-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2019-09-10 240-659-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2019-09-10 240-806-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 INDIANHEAD MD
2019-09-03 240-540-0XXX 0000–0999Assigned TELNYX LLC 073H WSNG238Z13 MD
2019-09-03 240-653-8XXX 8000–8999Assigned TELNYX LLC 073H LAUREL238 MD
2019-08-30 240-656-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
2019-08-30 240-656-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
2019-08-22 240-655-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 KITZMILLER MD
2019-08-14 240-663-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MIDDLETOWN MD
2019-08-14 240-725-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LXTNPKGRML MD
2019-08-14 240-828-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2019-08-14 240-828-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2019-08-12 240-315-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2019-08-12 240-639-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2019-08-06 240-425-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2019-08-01 240-425-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN2 MD
2019-07-15 240-569-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC.- MD 2593 FLINTSTONE MD
2019-07-15 240-569-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC.- MD 2593 FLINTSTONE MD
2019-07-15 240-617-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC.- MD 2593 HIGHFIELD MD
2019-07-15 240-617-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC.- MD 2593 HIGHFIELD MD
2019-07-15 240-647-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC.- MD 2593 CLEAR SPG MD
2019-07-15 240-647-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC.- MD 2593 CLEAR SPG MD
2019-07-15 240-655-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC.- MD 2593 KITZMILLER MD
2019-07-15 240-655-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC.- MD 2593 KITZMILLER MD
2019-07-15 240-664-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC.- MD 2593 CUMBERLAND MD
2019-07-15 240-664-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC.- MD 2593 CUMBERLAND MD
2019-07-15 240-996-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC.- MD 2593 BRUNSWICK MD
2019-07-15 240-996-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC.- MD 2593 BRUNSWICK 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.