NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 617
BANDWIDTH.COM CLEC, LLC - 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
2009-07-23 617-768-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2009-07-23 617-806-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2009-07-14 617-237-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MA 316E QUINCY MA
2009-07-13 617-207-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WINTHROP MA
2009-06-26 617-207-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WINTHROP MA
2009-06-24 617-514-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DORCHESTER MA
2009-06-08 617-717-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2009-06-04 617-866-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2009-06-04 617-999-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2009-05-27 617-409-8XXX 8000–8999Assigned FREEDOM RING COMMUNICATIONS, LLC 8468 CHELSEA MA
2009-04-29 617-735-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2009-04-14 617-704-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DORCHESTER MA
2009-04-14 617-704-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J DORCHESTER MA
2009-04-10 617-858-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2009-04-01 617-858-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2009-03-30 617-714-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2009-03-30 617-714-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CAMBRIDGE MA
2009-03-25 617-516-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2009-03-25 617-606-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2009-03-20 617-391-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2009-03-17 617-652-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ROXBURY MA
2009-02-20 617-506-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J DORCHESTER MA
2009-02-20 617-942-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J JAMAICA PL MA
2009-02-18 617-955-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2009-02-18 617-955-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAMBRIDGE MA
2009-02-04 617-208-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E BRIGHTON MA
2009-02-04 617-294-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E EVERETT MA
2009-02-04 617-318-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - MA 316E ROXBURY MA
2009-02-04 617-674-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CAMBRIDGE MA
2009-02-04 617-758-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E CAMBRIDGE MA
2009-02-04 617-942-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - MA 316E JAMAICA PL MA
2009-01-13 617-415-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2009-01-13 617-586-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2009-01-05 617-955-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2008-12-08 617-583-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2008-12-08 617-583-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J CAMBRIDGE MA
2008-12-08 617-599-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2008-12-04 617-744-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WATERTOWN MA
2008-12-04 617-863-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SOMERVILLE MA
2008-11-10 617-213-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2008-11-10 617-237-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2008-11-10 617-294-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EVERETT MA
2008-11-10 617-294-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2008-11-10 617-322-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILTON MA
2008-11-10 617-329-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WINTHROP MA
2008-11-10 617-466-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHELSEA MA
2008-11-10 617-506-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E DORCHESTER MA
2008-11-10 617-615-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E MILTON MA
2008-11-10 617-652-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ROXBURY MA
2008-11-10 617-744-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E WATERTOWN 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.