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
2013-03-01 401-266-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PORTSMOUTH RI
2013-02-26 401-363-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NARRAGNSTT RI
2013-02-13 401-406-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2013-02-13 401-406-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - RI 4016 PROVIDENCE RI
2013-01-31 401-999-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2013-01-31 401-999-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2013-01-23 401-213-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CAROLINA RI
2013-01-23 401-219-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 GREENWICH RI
2013-01-23 401-659-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2012-12-27 401-548-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PAWTUCKET RI
2012-12-27 401-548-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PAWTUCKET RI
2012-11-05 401-443-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-11-05 401-601-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-11-01 401-443-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2012-10-19 401-442-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-10-18 401-359-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PAWTUCKET RI
2012-10-18 401-426-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CUMBLND HL RI
2012-10-12 401-266-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PORTSMOUTH RI
2012-10-12 401-601-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-10-12 401-601-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-10-12 401-601-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-10-12 401-612-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-09-14 401-363-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J NARRAGNSTT RI
2012-09-14 401-363-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J NARRAGNSTT RI
2012-09-07 401-430-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-09-07 401-602-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-09-07 401-602-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-08-23 401-400-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-08-23 401-479-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-08-23 401-612-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-08-22 401-483-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J BRISTOL RI
2012-08-03 401-636-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WOONSOCKET RI
2012-07-13 401-868-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PROVIDENCE RI
2012-07-06 401-360-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NARRAGNSTT RI
2012-06-15 401-209-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-06-15 401-209-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-06-15 401-209-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-06-15 401-209-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-06-15 401-867-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-06-14 401-209-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PROVIDENCE RI
2012-06-14 401-733-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 WOONSOCKET RI
2012-06-12 401-409-9XXX 9000–9999Assigned AT&T - LOCAL 7421 CAROLINA RI
2012-05-24 401-408-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-05-11 401-437-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-05-11 401-572-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-05-11 401-572-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-05-11 401-572-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PROVIDENCE RI
2012-05-08 401-318-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-05-02 401-213-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F CAROLINA RI
2012-04-19 401-606-0XXX 0000–0999Assigned PAETEC COMMUNICATIONS, INC. - RI 4029 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.