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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-11-18 240-719-1XXX 1000–1999Assigned METROPCS, INC. 5562 WSHNGTNZN5 MD
2016-11-18 240-725-1XXX 1000–1999Assigned PEERLESS NETWORK OF MARYLAND, LLC 568G LXTNPKGRML MD
2016-11-18 240-970-3XXX 3000–3999Assigned METROPCS, INC. 5562 WSNGTNZN12 MD
2016-11-10 240-690-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 GAITHERSBG MD
2016-11-10 240-859-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MD 7325 ASHTON238 MD
2016-11-09 240-549-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FREDERICK MD
2016-11-09 240-636-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LAUREL236 MD
2016-11-09 240-719-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN5 MD
2016-11-09 240-784-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MYERSVILLE MD
2016-11-09 240-842-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WSNG238Z14 MD
2016-11-09 240-907-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2016-11-01 240-302-2XXX 2000–2999Assigned BARR TELL USA, INC. 964H LAUREL236 MD
2016-11-01 240-530-5XXX 5000–5999Assigned BARR TELL USA, INC. 964H WALDORF MD
2016-11-01 240-661-2XXX 2000–2999Assigned BARR TELL USA, INC. 964H LXTNPKGRML MD
2016-11-01 240-805-9XXX 9000–9999Assigned BARR TELL USA, INC. 964H GAITHERSBG MD
2016-11-01 240-850-5XXX 5000–5999Assigned METROPCS, INC. 5562 HAGERSTOWN MD
2016-11-01 240-970-0XXX 0000–0999Assigned METROPCS, INC. 5562 WSNGTNZN12 MD
2016-10-27 240-906-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2016-10-20 240-918-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-10-20 240-918-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-10-20 240-918-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-10-18 240-530-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 WALDORF MD
2016-10-18 240-985-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILLIAMSPT MD
2016-10-18 240-996-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 BRUNSWICK MD
2016-10-18 240-998-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HANCOCK MD
2016-10-14 240-636-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAUREL236 MD
2016-10-14 240-817-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-10-14 240-817-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2016-10-14 240-877-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FREDERICK MD
2016-10-07 240-540-1XXX 1000–1999Assigned THE VOICE APPLICATION NETWORK, LLC 507J WSNG238Z13 MD
2016-09-28 240-302-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2016-09-28 240-302-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2016-09-28 240-302-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2016-09-28 240-302-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2016-09-28 240-302-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2016-09-28 240-302-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2016-09-26 240-488-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OAKLAND MD
2016-09-26 240-609-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CUMBERLAND MD
2016-09-26 240-657-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FROSTBURG MD
2016-09-26 240-774-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 LONACONING MD
2016-09-26 240-775-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WESTERNPT MD
2016-09-26 240-862-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 MT SAVAGE MD
2016-09-23 240-451-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J THURMONT MD
2016-09-23 240-734-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SMITHSBURG MD
2016-09-23 240-908-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALKERSVL MD
2016-09-23 240-915-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEW MARKET MD
2016-09-22 240-307-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 EMMITSBURG MD
2016-09-22 240-436-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUCKEYSTN MD
2016-09-22 240-617-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 HIGHFIELD MD
2016-09-22 240-732-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOUNT AIRY 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.