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
2018-05-17 480-880-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-16 480-977-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2018-05-16 480-977-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2018-05-15 480-936-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-05-15 480-936-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-05-15 480-936-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-05-15 480-936-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-05-15 480-936-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-05-14 480-687-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2018-05-11 480-936-0XXX 0000–0999Assigned METROPCS, INC. 5562 PHOENIX AZ
2018-05-11 480-936-9XXX 9000–9999Assigned METROPCS, INC. 5562 PHOENIX AZ
2018-05-10 480-770-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-10 480-770-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-10 480-770-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-10 480-770-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-10 480-770-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-10 480-770-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-10 480-770-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-04 480-504-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-04 480-504-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-05-04 480-504-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-04-18 480-504-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-04-18 480-504-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-04-11 480-504-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-04-11 480-504-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-03-30 480-408-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-408-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-504-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-504-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-30 480-504-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-26 480-925-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-26 480-925-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-26 480-925-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-19 480-925-0XXX 0000–0999Assigned METROPCS, INC. 5562 PHOENIX AZ
2018-03-19 480-925-1XXX 1000–1999Assigned METROPCS, INC. 5562 PHOENIX AZ
2018-03-09 480-925-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-09 480-925-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-09 480-925-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-09 480-925-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-03-09 480-925-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.