NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

22 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 559
NEW CINGULAR WIRELESS PCS, LLC 4
HD CARRIER LLC 4
EXIANT COMMUNICATIONS LLC 4
BANDWIDTH.COM CLEC, LLC - CA 4
OPENTACT INC. 2
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
2020-12-10 559-860-1XXX 1000–1999Assigned METROPCS, INC. 5562 FRESNO CA
2020-12-10 559-860-7XXX 7000–7999Assigned METROPCS, INC. 5562 FRESNO CA
2020-12-09 559-604-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-09 559-604-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-12-01 559-860-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FRESNO CA
2020-11-25 559-581-1XXX 1000–1999Assigned IP HORIZON LLC 515J FRESNO CA
2020-11-19 559-844-4XXX 4000–4999Assigned FRACTEL, LLC 965H MIRANTPHST CA
2020-11-03 559-245-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C MIRANTPHST CA
2020-11-03 559-340-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C DUNLAP CA
2020-11-03 559-340-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C DUNLAP CA
2020-11-03 559-379-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LINDSAY CA
2020-11-03 559-379-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LINDSAY CA
2020-11-03 559-677-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BADGER CA
2020-11-03 559-677-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BADGER CA
2020-11-03 559-698-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SANJOAQUIN CA
2020-11-03 559-698-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SANJOAQUIN CA
2020-10-27 559-586-2XXX 2000–2999Assigned TELNYX LLC 073H LINDSAY CA
2020-10-22 559-557-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-22 559-557-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-22 559-557-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-22 559-557-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-22 559-557-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-20 559-518-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-20 559-518-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-20 559-518-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-20 559-518-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-20 559-630-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANJOAQUIN CA
2020-10-20 559-749-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-14 559-518-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-14 559-518-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-14 559-518-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-14 559-518-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-14 559-518-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-14 559-518-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VISALIA CA
2020-10-12 559-829-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SANJOAQUIN CA
2020-10-07 559-890-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FRESNO CA
2020-09-30 559-860-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FRESNO CA
2020-09-24 559-552-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FRESNO CA
2020-09-18 559-314-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CLOVIS CA
2020-09-18 559-314-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CLOVIS CA
2020-09-16 559-209-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FRESNO CA
2020-09-16 559-209-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FRESNO CA

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.