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
2010-02-23 240-640-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
2010-02-22 240-347-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F HAGERSTOWN MD
2010-02-11 240-389-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ASHTON236 MD
2010-02-11 240-640-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
2010-02-08 240-324-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F ASHTON238 MD
2010-02-05 240-428-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNGTNZN10 MD
2010-02-04 240-319-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2010-02-04 240-435-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2010-02-04 240-695-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WSHNGTNZN5 MD
2010-02-04 240-701-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-701-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-701-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-701-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-701-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-704-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-704-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-704-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-704-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-02-04 240-704-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-01-26 240-230-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F HUGHESVL MD
2010-01-26 240-242-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNGTNZN11 MD
2010-01-26 240-244-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNGTNZN16 MD
2010-01-26 240-317-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F LXTNPKGRML MD
2010-01-26 240-347-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F HAGERSTOWN MD
2010-01-26 240-347-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F HAGERSTOWN MD
2010-01-26 240-394-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F MOUNT AIRY MD
2010-01-26 240-397-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FREDERICK MD
2010-01-26 240-397-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F FREDERICK MD
2010-01-26 240-466-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F MECHANCSVL MD
2010-01-26 240-479-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2010-01-26 240-580-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F CUMBERLAND MD
2010-01-26 240-587-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F LEONARDTN MD
2010-01-26 240-640-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
2010-01-26 240-745-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F DAMASCS236 MD
2010-01-26 240-776-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F LA PLATA MD
2010-01-26 240-812-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F POOLESVL MD
2010-01-26 240-844-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F RIDGE MD
2010-01-20 240-233-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F TOMPKINSVL MD
2010-01-20 240-424-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2010-01-12 240-406-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2010-01-12 240-938-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2010-01-07 240-397-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2010-01-07 240-587-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LEONARDTN MD
2010-01-05 240-706-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-01-05 240-706-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-01-05 240-706-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-01-05 240-706-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2010-01-05 240-706-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSHNGTNZN3 MD
2009-12-23 240-382-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2009-12-23 240-469-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN 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.