NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2015-01-26 617-663-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2015-01-26 617-718-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2015-01-08 617-597-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-12-12 617-845-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J QUINCY MA
2014-12-11 617-996-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D SOMERVILLE MA
2014-12-11 617-996-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D SOMERVILLE MA
2014-12-03 617-383-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-12-03 617-431-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-12-03 617-804-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2014-12-03 617-804-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2014-12-03 617-804-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E QUINCY MA
2014-12-03 617-863-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2014-12-03 617-863-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E SOMERVILLE MA
2014-12-03 617-879-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-11-21 617-297-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DORCHESTER MA
2014-11-11 617-795-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2014-11-11 617-795-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E NEWTON MA
2014-11-11 617-917-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2014-11-11 617-917-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E EVERETT MA
2014-10-24 617-862-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-24 617-862-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-24 617-862-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-24 617-862-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-24 617-862-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-09 617-208-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2014-10-09 617-337-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHARLESTN MA
2014-10-09 617-380-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHARLESTN MA
2014-10-09 617-415-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2014-10-09 617-586-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2014-10-09 617-586-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2014-10-09 617-712-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHARLESTN MA
2014-10-09 617-870-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BRIGHTON MA
2014-10-03 617-213-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 NEWTON MA
2014-10-03 617-831-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-03 617-831-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-03 617-916-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-03 617-916-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-03 617-916-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-03 617-916-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-10-03 617-992-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-10-03 617-992-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROOKLINE MA
2014-10-01 617-712-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2014-10-01 617-712-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D CHARLESTN MA
2014-09-29 617-917-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D EVERETT MA
2014-09-29 617-917-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D EVERETT MA
2014-09-22 617-652-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2014-09-22 617-749-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D ROXBURY MA
2014-09-19 617-581-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-09-19 617-659-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2014-09-16 617-580-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLESTN MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.