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
2012-04-06 240-613-6XXX 6000–6999Assigned US LEC OF MARYLAND, INC. 2589 WSHNGTNZN4 MD
2012-04-06 240-613-7XXX 7000–7999Assigned US LEC OF MARYLAND, INC. 2589 WSHNGTNZN4 MD
2012-04-06 240-613-8XXX 8000–8999Assigned US LEC OF MARYLAND, INC. 2589 WSHNGTNZN4 MD
2012-04-06 240-613-9XXX 9000–9999Assigned US LEC OF MARYLAND, INC. 2589 WSHNGTNZN4 MD
2012-04-05 240-490-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MIDDLETOWN MD
2012-03-30 240-492-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN5 MD
2012-03-23 240-670-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN3 MD
2012-03-23 240-734-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F SMITHSBURG MD
2012-03-22 240-754-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WALDORF MD
2012-03-22 240-754-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WALDORF MD
2012-03-07 240-573-2XXX 2000–2999Assigned ONVOY, LLC - MD 876D WSNG236Z15 MD
2012-02-29 240-297-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNG236Z13 MD
2012-02-15 240-233-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 TOMPKINSVL MD
2012-02-14 240-560-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN12 MD
2012-02-06 240-650-9XXX 9000–9999Assigned ONVOY, LLC - MD 876D WSHNGTNZN3 MD
2012-02-03 240-200-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2012-01-31 240-669-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN11 MD
2012-01-30 240-650-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSHNGTNZN3 MD
2012-01-30 240-707-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2012-01-30 240-707-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2012-01-30 240-707-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2012-01-30 240-803-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2012-01-30 240-803-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2012-01-23 240-200-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSHNGTNZN2 MD
2011-12-21 240-348-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WSNGTNZN16 MD
2011-12-16 240-624-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNG236Z13 MD
2011-11-17 240-772-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 FREDERICK MD
2011-11-16 240-712-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2011-11-16 240-712-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2011-11-16 240-712-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2011-11-15 240-979-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2011-11-15 240-979-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2011-11-14 240-265-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-11-14 240-265-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-11-14 240-265-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-11-14 240-265-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-11-14 240-272-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-11-14 240-754-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 WALDORF MD
2011-11-10 240-270-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALDORF MD
2011-11-10 240-621-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WSNGTNZN11 MD
2011-11-09 240-470-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL236 MD
2011-11-09 240-842-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MD 071F WSNG238Z14 MD
2011-11-08 240-257-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 NANJEMOY MD
2011-11-02 240-712-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2011-11-01 240-823-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BRANDYWINE MD
2011-10-25 240-200-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-10-25 240-234-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-10-25 240-234-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-10-25 240-234-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2011-10-25 240-234-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 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.