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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-07-19 480-291-5XXX 5000–5999Assigned SADDLEBACK COMMUNICATIONS COMPANY - AZ 7991 PHOENIX AZ
2007-07-19 480-291-8XXX 8000–8999Assigned SADDLEBACK COMMUNICATIONS COMPANY - AZ 7991 PHOENIX AZ
2007-07-19 480-319-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-07-19 480-319-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-07-19 480-319-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-07-19 480-319-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-07-19 480-319-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-07-18 480-316-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-06-29 480-289-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2007-06-29 480-289-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2007-06-28 480-273-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-06-28 480-273-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-06-28 480-273-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-06-12 480-316-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-06-12 480-316-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-06-04 480-306-9XXX 9000–9999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-06-04 480-316-6XXX 6000–6999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-06-04 480-316-7XXX 7000–7999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-06-01 480-306-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-06-01 480-306-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-06-01 480-306-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-06-01 480-306-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-06-01 480-306-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-05-24 480-297-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-24 480-297-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-24 480-297-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-24 480-297-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-24 480-297-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-24 480-316-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-24 480-316-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-24 480-316-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-24 480-316-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-18 480-297-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-310-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-310-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-310-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-310-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-334-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-334-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-334-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-334-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-334-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-335-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-335-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-18 480-335-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-05-15 480-294-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-15 480-294-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-15 480-406-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-15 480-406-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-14 480-297-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E 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.