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
2010-06-24 781-366-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2010-06-04 781-482-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LEXINGTON MA
2010-05-27 781-338-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MALDEN MA
2010-05-27 781-422-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E KINGSTON MA
2010-05-27 781-536-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARSHFIELD MA
2010-05-27 781-609-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WALTHAM MA
2010-05-27 781-691-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LYNN MA
2010-05-27 781-803-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WEYMOUTH MA
2010-05-27 781-990-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARBLEHEAD MA
2010-05-13 781-605-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MALDEN MA
2010-05-13 781-606-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MELROSE MA
2010-05-13 781-786-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALTHAM MA
2010-05-07 781-708-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2010-05-07 781-708-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2010-04-16 781-584-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LYNN MA
2010-04-16 781-924-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HANOVER MA
2010-04-15 781-430-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J LEXINGTON MA
2010-03-30 781-309-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LYNN MA
2010-03-23 781-262-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D BURLINGTON MA
2010-03-23 781-499-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D HANOVER MA
2010-03-23 781-691-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D LYNN MA
2010-03-11 781-609-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WALTHAM MA
2010-03-08 781-250-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WALTHAM MA
2010-03-04 781-225-0XXX 0000–0999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-1XXX 1000–1999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-2XXX 2000–2999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-3XXX 3000–3999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-4XXX 4000–4999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-5XXX 5000–5999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-6XXX 6000–6999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-7XXX 7000–7999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-8XXX 8000–8999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-225-9XXX 9000–9999Assigned TC SYSTEMS, INC. 7135 LEXINGTON MA
2010-03-04 781-715-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LYNN MA
2010-03-04 781-774-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CANTON MA
2010-03-04 781-879-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LEXINGTON MA
2010-03-04 781-898-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEEDHAM MA
2010-03-03 781-803-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WEYMOUTH MA
2010-02-26 781-817-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BRAINTREE MA
2010-02-18 781-421-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROCKLAND MA
2010-02-10 781-797-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARBLEHEAD MA
2010-02-04 781-697-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2010-01-25 781-214-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HULL MA
2010-01-25 781-236-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E COHASSET MA
2010-01-25 781-281-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WOBURN MA
2010-01-25 781-334-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LYNNFIELD MA
2010-01-25 781-366-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DEDHAM MA
2010-01-25 781-412-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SCITUATE MA
2010-01-25 781-437-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E RANDOLPH MA
2010-01-25 781-523-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WHITMAN 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.