NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

2 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 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
2011-05-23 781-999-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LEXINGTON MA
2011-05-17 781-726-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J NEEDHAM MA
2011-05-16 781-606-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MELROSE MA
2011-05-09 781-399-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MALDEN MA
2011-05-09 781-482-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LEXINGTON MA
2011-05-09 781-482-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LEXINGTON MA
2011-05-09 781-680-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NORWOOD MA
2011-05-09 781-810-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WALTHAM MA
2011-05-09 781-839-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WALTHAM MA
2011-05-05 781-281-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WOBURN MA
2011-04-13 781-426-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 REVERE MA
2011-04-13 781-541-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J LEXINGTON MA
2011-04-04 781-296-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2011-04-04 781-999-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LEXINGTON MA
2011-03-24 781-780-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LYNN MA
2011-03-23 781-430-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LEXINGTON MA
2011-03-16 781-839-0XXX 0000–0999Assigned METROPCS, INC. 5562 WALTHAM MA
2011-03-09 781-707-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEEDHAM MA
2011-02-28 781-605-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MALDEN MA
2011-02-24 781-790-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J WALTHAM MA
2011-02-17 781-435-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E STONEHAM MA
2011-02-17 781-881-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORWOOD MA
2011-02-17 781-886-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 STOUGHTON MA
2011-02-04 781-591-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WELLESLEY MA
2011-02-04 781-635-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NORWELL MA
2011-02-02 781-315-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 READING MA
2011-02-02 781-375-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DEDHAM MA
2011-01-31 781-530-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALTHAM MA
2011-01-31 781-530-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALTHAM MA
2011-01-31 781-742-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2011-01-31 781-742-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2011-01-31 781-742-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2011-01-26 781-590-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J MELROSE MA
2011-01-14 781-914-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WAKEFIELD MA
2011-01-12 781-561-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NORWELL MA
2011-01-05 781-296-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2011-01-05 781-425-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BURLINGTON MA
2011-01-05 781-429-6XXX 6000–6999Assigned TC SYSTEMS, INC. 7135 NEEDHAM MA
2010-12-13 781-369-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WINCHESTER MA
2010-12-13 781-573-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E STOUGHTON MA
2010-12-13 781-924-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HANOVER MA
2010-12-08 781-499-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HANOVER MA
2010-12-08 781-514-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J NEEDHAM MA
2010-11-24 781-779-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J READING MA
2010-11-03 781-228-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRAINTREE MA
2010-10-29 781-857-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ROCKLAND MA
2010-10-18 781-277-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WEYMOUTH MA
2010-10-18 781-479-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LYNN MA
2010-10-18 781-530-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WALTHAM MA
2010-10-14 781-523-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WHITMAN MA

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.