NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 480
TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2017-08-30 480-681-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2017-08-28 480-909-4XXX 4000–4999Assigned RE-INVENT TELECOM, LLC - AZ 663G PHOENIX AZ
2017-08-21 480-653-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-653-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-653-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-653-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-653-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-653-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-653-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-653-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-08-21 480-909-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-21 480-909-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-21 480-909-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-21 480-909-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-21 480-909-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-18 480-681-1XXX 1000–1999Assigned TELNYX LLC 073H PHOENIX AZ
2017-08-14 480-562-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-14 480-562-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-14 480-562-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-14 480-562-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-14 480-562-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2017-08-14 480-923-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-14 480-923-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-14 480-923-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-14 480-923-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-14 480-923-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-08-08 480-571-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-07-24 480-923-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-07-24 480-923-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-07-24 480-923-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-07-24 480-923-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2017-07-07 480-562-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2017-07-07 480-562-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2017-07-07 480-562-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2017-07-07 480-562-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2017-07-06 480-793-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-07-06 480-869-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-07-06 480-869-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2017-06-23 480-562-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2017-06-21 480-793-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2017-05-31 480-867-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ

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.