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
2011-08-05 401-327-3XXX 3000–3999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-05 401-327-4XXX 4000–4999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-280-3XXX 3000–3999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-280-4XXX 4000–4999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-280-5XXX 5000–5999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-280-6XXX 6000–6999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-280-7XXX 7000–7999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-280-8XXX 8000–8999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-280-9XXX 9000–9999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-315-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WESTERLY RI
2011-08-01 401-500-7XXX 7000–7999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-500-8XXX 8000–8999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-08-01 401-500-9XXX 9000–9999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-07-13 401-360-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J NARRAGNSTT RI
2011-07-12 401-200-0XXX 0000–0999Assigned METROPCS, INC. 5562 BRISTOL RI
2011-07-12 401-363-3XXX 3000–3999Assigned METROPCS, INC. 5562 NARRAGNSTT RI
2011-07-12 401-426-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2011-07-12 401-610-0XXX 0000–0999Assigned METROPCS, INC. 5562 COVENTRY RI
2011-07-06 401-500-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-07-01 401-284-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NARRAGNSTT RI
2011-07-01 401-680-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2011-06-24 401-280-1XXX 1000–1999Assigned YMAX COMMUNICATIONS CORP. - RI 363E PROVIDENCE RI
2011-06-24 401-500-4XXX 4000–4999Assigned METROPCS, INC. 5562 PROVIDENCE RI
2011-06-24 401-548-1XXX 1000–1999Assigned METROPCS, INC. 5562 PAWTUCKET RI
2011-06-24 401-597-2XXX 2000–2999Assigned METROPCS, INC. 5562 WOONSOCKET RI
2011-06-17 401-500-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-06-16 401-773-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WARWICK RI
2011-06-03 401-280-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J PROVIDENCE RI
2011-06-03 401-500-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-06-01 401-203-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F GREENWICH RI
2011-06-01 401-349-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CENTREDALE RI
2011-05-25 401-859-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F BLOCK IS RI
2011-05-23 401-500-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-05-23 401-500-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-05-20 401-307-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F TIVERTON RI
2011-05-19 401-250-4XXX 4000–4999Assigned METROPCS, INC. 5562 W WARWICK RI
2011-05-19 401-363-1XXX 1000–1999Assigned METROPCS, INC. 5562 NARRAGNSTT RI
2011-05-05 401-216-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WOONSOCKET RI
2011-05-05 401-236-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F NEWPORT RI
2011-05-05 401-304-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F W WARWICK RI
2011-05-05 401-326-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F WESTERLY RI
2011-05-05 401-400-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2011-05-05 401-400-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2011-05-05 401-400-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2011-05-05 401-400-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2011-05-05 401-400-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2011-05-05 401-834-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PAWTUCKET RI
2011-04-22 401-400-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J PROVIDENCE RI
2011-04-07 401-280-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2011-04-04 401-680-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE 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.