NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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, all time — NPA 602
T-MOBILE USA, INC. 619
ONVOY, LLC - AZ 439
NEW CINGULAR WIRELESS PCS, LLC 268
BANDWIDTH.COM CLEC, LLC - AZ 238
METROPCS, INC. 229
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
2019-08-15 602-587-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-08-15 602-587-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-08-15 602-587-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-08-15 602-609-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-08-15 602-609-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-08-15 602-609-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-08-15 602-609-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-08-15 602-661-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-08-15 602-661-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-08-15 602-661-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-08-07 602-661-5XXX 5000–5999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2019-08-07 602-661-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2019-08-05 602-610-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-08-05 602-610-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-07-31 602-609-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-07-31 602-609-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-07-31 602-609-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-07-31 602-609-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-07-31 602-609-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2019-07-19 602-587-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2019-06-11 602-587-0XXX 0000–0999Assigned TELNYX LLC 073H PHOENIX AZ
2019-06-11 602-587-1XXX 1000–1999Assigned TELNYX LLC 073H PHOENIX AZ
2019-06-11 602-609-9XXX 9000–9999Assigned HD CARRIER LLC 321J PHOENIX AZ
2019-06-11 602-661-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2019-06-03 602-661-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-06-03 602-661-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-06-03 602-661-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-06-03 602-661-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-05-29 602-587-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-05-29 602-587-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-05-29 602-587-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-05-29 602-587-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-05-29 602-675-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-05-29 602-675-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-05-29 602-675-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-05-29 602-675-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-05-29 602-675-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-05-21 602-675-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2019-05-21 602-675-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2019-05-21 602-675-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2019-05-21 602-675-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2019-05-21 602-675-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.