NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

11 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 401
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 4
ONVOY, LLC - RI 2
BANDWIDTH.COM CLEC, LLC - RI 2
TELNYX LLC 1
LEVEL 3 COMMUNICATIONS, LLC - RI 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
2011-03-30 401-250-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F W WARWICK RI
2011-03-25 401-287-1XXX 1000–1999Assigned METROPCS, INC. 5562 WARWICK RI
2011-03-15 401-332-0XXX 0000–0999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-332-1XXX 1000–1999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-332-2XXX 2000–2999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-332-3XXX 3000–3999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-332-4XXX 4000–4999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-332-5XXX 5000–5999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-332-6XXX 6000–6999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-332-7XXX 7000–7999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-15 401-500-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-03-14 401-268-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F NO KINGSTN RI
2011-03-14 401-315-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WESTERLY RI
2011-03-09 401-603-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-03-09 401-603-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-03-07 401-226-9XXX 9000–9999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-03-07 401-426-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CUMBLND HL RI
2011-03-07 401-603-7XXX 7000–7999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-02-17 401-675-7XXX 7000–7999Assigned METROPCS, INC. 5562 NARRAGNSTT RI
2011-02-17 401-775-9XXX 9000–9999Assigned METROPCS, INC. 5562 WOONSOCKET RI
2011-02-16 401-921-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WARWICK RI
2011-01-24 401-203-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F GREENWICH RI
2011-01-24 401-236-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F NEWPORT RI
2011-01-24 401-250-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F W WARWICK RI
2011-01-24 401-284-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F NARRAGNSTT RI
2011-01-24 401-300-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CENTREDALE RI
2010-12-22 401-268-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F NO KINGSTN RI
2010-12-22 401-285-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PASCOAG RI
2010-12-22 401-297-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F BRISTOL RI
2010-12-22 401-315-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WESTERLY RI
2010-12-22 401-834-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PAWTUCKET RI
2010-12-20 401-226-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-12-10 401-426-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CUMBLND HL RI
2010-11-24 401-519-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2010-11-24 401-519-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2010-11-18 401-297-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F BRISTOL RI
2010-11-05 401-400-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-11-05 401-400-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-11-05 401-400-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-11-03 401-216-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WOONSOCKET RI
2010-11-03 401-287-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WARWICK RI
2010-11-03 401-365-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PAWTUCKET RI
2010-11-03 401-426-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2010-10-05 401-310-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WARREN RI
2010-09-02 401-680-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-08-05 401-203-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F GREENWICH RI
2010-08-05 401-236-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F NEWPORT RI
2010-08-05 401-284-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F NARRAGNSTT RI
2010-08-05 401-300-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CENTREDALE RI
2010-07-29 401-217-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WGLOCESTER RI

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.