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
2010-07-29 401-217-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WGLOCESTER RI
2010-07-29 401-227-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F SCITUATE RI
2010-07-29 401-227-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F SCITUATE RI
2010-07-29 401-366-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PORTSMOUTH RI
2010-07-29 401-366-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PORTSMOUTH RI
2010-07-29 401-426-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CUMBLND HL RI
2010-07-29 401-426-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CUMBLND HL RI
2010-07-29 401-589-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F W WARWICK RI
2010-07-29 401-589-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F W WARWICK RI
2010-07-29 401-592-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F LTLCOMPTON RI
2010-07-29 401-592-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F LTLCOMPTON RI
2010-07-29 401-655-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F BRISTOL RI
2010-07-29 401-655-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F BRISTOL RI
2010-07-26 401-519-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2010-07-20 401-519-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2010-07-13 401-206-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F W WARWICK RI
2010-07-13 401-619-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J NEWPORT RI
2010-07-02 401-603-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-07-01 401-519-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2010-06-03 401-752-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-06-03 401-871-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-05-19 401-216-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WOONSOCKET RI
2010-05-19 401-246-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WARREN RI
2010-05-19 401-285-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PASCOAG RI
2010-05-19 401-287-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WARWICK RI
2010-05-19 401-288-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PAWTUCKET RI
2010-05-19 401-415-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-05-19 401-426-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2010-05-19 401-680-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-05-19 401-680-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-05-19 401-680-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-05-11 401-415-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2010-05-11 401-583-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J NO KINGSTN RI
2010-05-07 401-415-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2010-05-07 401-548-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PAWTUCKET RI
2010-05-04 401-871-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-05-03 401-637-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WESTERLY RI
2010-04-07 401-871-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-03-24 401-267-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 NO KINGSTN RI
2010-03-04 401-206-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F W WARWICK RI
2010-03-04 401-335-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PAWTUCKET RI
2010-03-03 401-871-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-03-03 401-871-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-02-19 401-484-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2010-02-18 401-426-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2010-02-11 401-415-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2010-02-10 401-405-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CUMBLND HL RI
2010-02-04 401-871-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-02-04 401-871-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2010-01-29 401-203-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F GREENWICH 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.