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
2010-10-12 781-602-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-12 781-602-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-12 781-602-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-12 781-602-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-12 781-602-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-12 781-817-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-12 781-917-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-12 781-926-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BRAINTREE MA
2010-10-01 781-217-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KINGSTON MA
2010-10-01 781-217-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KINGSTON MA
2010-09-22 781-247-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEEDHAM MA
2010-09-22 781-304-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WELLESLEY MA
2010-09-22 781-429-5XXX 5000–5999Assigned TC SYSTEMS, INC. 7135 NEEDHAM MA
2010-09-22 781-517-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MELROSE MA
2010-09-10 781-378-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J SCITUATE MA
2010-09-10 781-602-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRAINTREE MA
2010-09-10 781-645-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J ARLINGTON MA
2010-09-09 781-404-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WOBURN MA
2010-09-03 781-806-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SHARON MA
2010-09-02 781-296-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WALTHAM MA
2010-09-02 781-606-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MELROSE MA
2010-08-31 781-708-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J DEDHAM MA
2010-08-27 781-296-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALTHAM MA
2010-08-27 781-296-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALTHAM MA
2010-08-27 781-502-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MALDEN MA
2010-08-26 781-436-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J STOUGHTON MA
2010-08-26 781-719-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEEDHAM MA
2010-08-25 781-566-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J MARSHFIELD MA
2010-08-23 781-620-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MELROSE MA
2010-08-17 781-269-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NORWOOD MA
2010-08-17 781-428-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E BRAINTREE MA
2010-08-17 781-437-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E RANDOLPH MA
2010-08-17 781-670-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E READING MA
2010-08-17 781-816-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SAUGUS MA
2010-08-11 781-569-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WOBURN MA
2010-08-03 781-879-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 LEXINGTON MA
2010-07-30 781-708-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2010-07-30 781-708-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2010-07-30 781-708-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DEDHAM MA
2010-07-28 781-342-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E LYNNFIELD MA
2010-07-28 781-462-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MELROSE MA
2010-07-28 781-797-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MARBLEHEAD MA
2010-07-28 781-815-5XXX 5000–5999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F RANDOLPH MA
2010-07-28 781-872-7XXX 7000–7999Assigned PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F READING MA
2010-07-26 781-786-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WALTHAM MA
2010-07-26 781-786-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J WALTHAM MA
2010-07-12 781-336-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KINGSTON MA
2010-07-12 781-425-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BURLINGTON MA
2010-07-12 781-996-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WALTHAM MA
2010-06-28 781-902-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WALTHAM 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.