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
2007-10-25 617-455-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-10-25 617-981-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-10-25 617-997-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-10-25 617-999-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2007-10-23 617-488-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2007-10-16 617-318-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2007-10-16 617-500-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2007-10-16 617-708-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ROXBURY MA
2007-10-15 617-516-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ROXBURY MA
2007-10-15 617-874-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J EASTBOSTON MA
2007-10-12 617-398-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J CHARLESTN MA
2007-10-02 617-506-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DORCHESTER MA
2007-10-02 617-963-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2007-10-02 617-963-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2007-10-02 617-963-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2007-09-26 617-934-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 QUINCY MA
2007-09-25 617-752-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SO BOSTON MA
2007-09-21 617-756-0XXX 0000–0999Assigned METROPCS, INC. 5562 BOSTON MA
2007-09-10 617-606-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2007-09-05 617-981-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-09-05 617-981-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-09-04 617-401-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2007-09-04 617-401-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2007-08-06 617-981-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-08-06 617-981-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-08-03 617-440-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SOMERVILLE MA
2007-07-13 617-614-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - MA 316E NEWTON MA
2007-07-12 617-502-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - MA 316E BOSTON MA
2007-07-10 617-401-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CAMBRIDGE MA
2007-07-06 617-997-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-07-02 617-987-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2007-06-26 617-386-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CAMBRIDGE MA
2007-06-08 617-431-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2007-06-06 617-997-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-06-06 617-999-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 CAMBRIDGE MA
2007-05-14 617-379-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 DORCHESTER MA
2007-05-14 617-500-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 CAMBRIDGE MA
2007-05-08 617-398-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2007-05-07 617-284-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SOMERVILLE MA
2007-05-07 617-843-0XXX 0000–0999Assigned VERIZON NEW ENGLAND INC. 9102 EVERETT MA
2007-05-04 617-895-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-05-04 617-895-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTBOSTON MA
2007-04-27 617-652-3XXX 3000–3999Assigned VERIZON NEW ENGLAND INC. 9102 ROXBURY MA
2007-04-19 617-502-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2007-04-19 617-849-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2007-04-19 617-849-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 BOSTON MA
2007-04-17 617-467-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J NEWTON MA
2007-04-17 617-502-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J BOSTON MA
2007-04-16 617-607-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WATERTOWN MA
2007-04-16 617-612-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 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.