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
2016-03-18 781-518-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MEDFORD MA
2016-03-18 781-539-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MEDFORD MA
2016-03-18 781-701-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WALTHAM MA
2016-03-18 781-717-4XXX 4000–4999Assigned HD CARRIER LLC 321J WINCHESTER MA
2016-03-18 781-717-5XXX 5000–5999Assigned HD CARRIER LLC 321J WINCHESTER MA
2016-03-18 781-717-6XXX 6000–6999Assigned HD CARRIER LLC 321J WINCHESTER MA
2016-03-18 781-717-7XXX 7000–7999Assigned HD CARRIER LLC 321J WINCHESTER MA
2016-03-18 781-832-8XXX 8000–8999Assigned HD CARRIER LLC 321J STONEHAM MA
2016-03-18 781-954-1XXX 1000–1999Assigned HD CARRIER LLC 321J STONEHAM MA
2016-03-18 781-954-6XXX 6000–6999Assigned HD CARRIER LLC 321J STONEHAM MA
2016-03-18 781-954-7XXX 7000–7999Assigned HD CARRIER LLC 321J STONEHAM MA
2016-03-16 781-867-0XXX 0000–0999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F SHARON MA
2016-03-15 781-243-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HANOVER MA
2016-03-15 781-604-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D WINCHESTER MA
2016-03-15 781-604-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D WINCHESTER MA
2016-03-15 781-924-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D HANOVER MA
2016-03-08 781-527-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D COHASSET MA
2016-03-08 781-527-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D COHASSET MA
2016-03-02 781-720-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D MELROSE MA
2016-02-29 781-365-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D BURLINGTON MA
2016-02-29 781-383-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D COHASSET MA
2016-02-29 781-412-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D SCITUATE MA
2016-02-29 781-427-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D NORWELL MA
2016-02-29 781-488-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D ARLINGTON MA
2016-02-29 781-562-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D CANTON MA
2016-02-29 781-705-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D WELLESLEY MA
2016-02-29 781-928-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D WAKEFIELD MA
2016-02-26 781-205-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 READING MA
2016-02-26 781-523-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D WHITMAN MA
2016-02-26 781-524-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D WHITMAN MA
2016-02-25 781-214-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D HULL MA
2016-02-25 781-242-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HULL MA
2016-02-25 781-291-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2016-02-25 781-291-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D DUXBURY MA
2016-02-25 781-546-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D SCITUATE MA
2016-02-25 781-546-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D SCITUATE MA
2016-02-25 781-853-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 REVERE MA
2016-02-25 781-867-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D SHARON MA
2016-02-25 781-867-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D SHARON MA
2016-02-24 781-355-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D DEDHAM MA
2016-02-24 781-563-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D BRYANTVL MA
2016-02-24 781-563-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D BRYANTVL MA
2016-02-24 781-580-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D LYNNFIELD MA
2016-02-24 781-580-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D LYNNFIELD MA
2016-02-24 781-621-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WAKEFIELD MA
2016-02-23 781-205-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D READING MA
2016-02-23 781-427-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D NORWELL MA
2016-02-23 781-427-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D NORWELL MA
2016-02-23 781-779-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D READING MA
2016-02-23 781-805-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D RANDOLPH 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.