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
2018-08-23 401-868-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J PROVIDENCE RI
2018-08-09 401-240-2XXX 2000–2999Assigned ONVOY, LLC - RI 977E BRISTOL RI
2018-08-09 401-608-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J NEWPORT RI
2018-07-27 401-764-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F SCITUATE RI
2018-07-17 401-618-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CENTREDALE RI
2018-07-09 401-563-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2018-07-09 401-563-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2018-06-25 401-266-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PORTSMOUTH RI
2018-06-14 401-600-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H PROVIDENCE RI
2018-06-12 401-656-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 WESTERLY RI
2018-06-12 401-656-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 WESTERLY RI
2018-05-29 401-537-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2018-05-04 401-412-0XXX 0000–0999Assigned ONVOY, LLC - RI 977E COVENTRY RI
2018-04-24 401-563-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2018-04-20 401-563-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PROVIDENCE RI
2018-03-29 401-240-4XXX 4000–4999Assigned ONVOY, LLC - RI 977E BRISTOL RI
2018-03-27 401-320-4XXX 4000–4999Assigned ONVOY, LLC - RI 977E W WARWICK RI
2018-03-20 401-710-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PASCOAG RI
2018-03-15 401-335-9XXX 9000–9999Assigned METROPCS, INC. 5562 PAWTUCKET RI
2018-03-07 401-259-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2018-03-07 401-259-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2018-03-07 401-259-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2018-03-07 401-288-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 PAWTUCKET RI
2018-03-07 401-567-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PASCOAG RI
2018-03-07 401-567-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - RI 003F PASCOAG RI
2018-03-07 401-733-3XXX 3000–3999Assigned ONVOY, LLC - RI 977E WOONSOCKET RI
2018-03-05 401-204-0XXX 0000–0999Assigned ONVOY, LLC - RI 977E PAWTUCKET RI
2018-02-01 401-298-9XXX 9000–9999Assigned ONVOY, LLC - RI 977E WARWICK RI
2018-01-11 401-200-6XXX 6000–6999Assigned ONVOY, LLC - RI 977E BRISTOL RI
2018-01-11 401-924-7XXX 7000–7999Assigned ONVOY, LLC - RI 977E PORTSMOUTH RI
2017-12-29 401-260-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-29 401-260-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7351 CENTREDALE RI
2017-12-28 401-229-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WOONSOCKET RI
2017-12-21 401-259-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D PROVIDENCE RI
2017-12-13 401-773-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WARWICK RI
2017-11-20 401-443-8XXX 8000–8999Assigned ONVOY, LLC - RI 977E PROVIDENCE RI
2017-11-20 401-443-9XXX 9000–9999Assigned ONVOY, LLC - RI 977E PROVIDENCE RI
2017-11-16 401-618-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CENTREDALE RI
2017-11-16 401-618-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CENTREDALE RI
2017-11-13 401-251-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PORTSMOUTH RI
2017-11-13 401-252-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WARREN RI
2017-11-13 401-268-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J NO KINGSTN 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.