NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 781
NEW CINGULAR WIRELESS PCS, LLC - DC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 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
2017-07-21 781-441-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 DEDHAM MA
2017-07-21 781-441-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 DEDHAM MA
2017-07-20 781-241-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 REVERE MA
2017-07-20 781-347-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ROCKLAND MA
2017-07-20 781-660-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WEYMOUTH MA
2017-06-28 781-783-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HINGHAM MA
2017-06-28 781-793-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SHARON MA
2017-06-21 781-709-6XXX 6000–6999Assigned METROPCS, INC. 5562 HANOVER MA
2017-06-20 781-268-7XXX 7000–7999Assigned METROPCS, INC. 5562 LYNN MA
2017-06-20 781-732-5XXX 5000–5999Assigned METROPCS, INC. 5562 LYNN MA
2017-06-20 781-777-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ARLINGTON MA
2017-06-19 781-410-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 DEDHAM MA
2017-06-15 781-957-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MEDFORD MA
2017-06-12 781-242-4XXX 4000–4999Assigned IP HORIZON LLC 515J HULL MA
2017-06-12 781-427-0XXX 0000–0999Assigned IP HORIZON LLC 515J NORWELL MA
2017-06-12 781-712-8XXX 8000–8999Assigned IP HORIZON LLC 515J MELROSE MA
2017-06-08 781-483-9XXX 9000–9999Assigned IP HORIZON LLC 515J ARLINGTON MA
2017-06-08 781-613-1XXX 1000–1999Assigned IP HORIZON LLC 515J DEDHAM MA
2017-06-02 781-709-7XXX 7000–7999Assigned METROPCS, INC. 5562 HANOVER MA
2017-06-01 781-303-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BRAINTREE MA
2017-05-26 781-423-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ROCKLAND MA
2017-05-25 781-309-0XXX 0000–0999Assigned METROPCS, INC. 5562 LYNN MA
2017-05-22 781-364-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CANTON MA
2017-05-10 781-761-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LEXINGTON MA
2017-05-10 781-918-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LEXINGTON MA
2017-05-04 781-350-7XXX 7000–7999Assigned TC SYSTEMS, INC. 7135 MEDFORD MA
2017-05-02 781-759-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WOBURN MA
2017-04-28 781-207-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D WALTHAM MA
2017-04-28 781-227-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-28 781-227-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-28 781-227-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-28 781-227-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-28 781-227-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-28 781-268-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D LYNN MA
2017-04-28 781-562-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D CANTON MA
2017-04-27 781-207-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-242-3XXX 3000–3999Assigned TELNYX LLC 073H HULL MA
2017-04-27 781-452-3XXX 3000–3999Assigned TELNYX LLC 073H DUXBURY MA
2017-04-27 781-524-8XXX 8000–8999Assigned TELNYX LLC 073H WHITMAN MA
2017-04-27 781-701-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-701-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-701-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-701-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-701-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-701-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-703-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-703-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-27 781-786-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2017-04-24 781-546-1XXX 1000–1999Assigned TELNYX LLC 073H SCITUATE MA
2017-04-24 781-973-8XXX 8000–8999Assigned TELNYX LLC 073H LYNNFIELD MA

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.