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 520
TELNYX LLC 43
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
2025-08-12 520-434-1XXX 1000–1999Assigned TELNYX LLC 073H TUCSON AZ
2023-08-22 520-679-8XXX 8000–8999Assigned TELNYX LLC 073H TOMBSTONE AZ
2023-08-10 520-680-0XXX 0000–0999Assigned TELNYX LLC 073H BISBEE AZ
2022-11-16 520-654-1XXX 1000–1999Assigned TELNYX LLC 073H SIERRAVIST AZ
2022-11-16 520-965-0XXX 0000–0999Assigned TELNYX LLC 073H TUCSON AZ
2022-11-08 520-608-1XXX 1000–1999Assigned TELNYX LLC 073H SAN MANUEL AZ
2022-10-13 520-657-8XXX 8000–8999Assigned TELNYX LLC 073H HAYDEN AZ
2022-08-04 520-506-7XXX 7000–7999Assigned TELNYX LLC 073H TOMBSTONE AZ
2022-08-04 520-646-8XXX 8000–8999Assigned TELNYX LLC 073H NOGALES AZ
2022-05-19 520-640-0XXX 0000–0999Assigned TELNYX LLC 073H TUCSON AZ
2022-03-28 520-929-0XXX 0000–0999Assigned TELNYX LLC 073H WILLCOX AZ
2022-02-24 520-641-0XXX 0000–0999Assigned TELNYX LLC 073H BENSON AZ
2021-10-13 520-598-0XXX 0000–0999Assigned TELNYX LLC 073H CASAGRANDE AZ
2021-10-04 520-592-0XXX 0000–0999Assigned TELNYX LLC 073H NOGALES AZ
2021-03-11 520-650-1XXX 1000–1999Assigned TELNYX LLC 073H WHITLOW AZ
2021-02-23 520-536-0XXX 0000–0999Assigned TELNYX LLC 073H DOUGLAS AZ
2021-02-11 520-593-0XXX 0000–0999Assigned TELNYX LLC 073H HAYDEN AZ
2020-12-01 520-521-1XXX 1000–1999Assigned TELNYX LLC 073H SAN MANUEL AZ
2020-10-22 520-264-0XXX 0000–0999Assigned TELNYX LLC 073H NOGALES AZ
2020-10-22 520-348-9XXX 9000–9999Assigned TELNYX LLC 073H WILLCOX AZ
2020-10-22 520-386-1XXX 1000–1999Assigned TELNYX LLC 073H BENSON AZ
2020-10-22 520-453-1XXX 1000–1999Assigned TELNYX LLC 073H TOMBSTONE AZ
2020-10-22 520-523-1XXX 1000–1999Assigned TELNYX LLC 073H SIERRAVIST AZ
2020-10-22 520-525-0XXX 0000–0999Assigned TELNYX LLC 073H BISBEE AZ
2020-10-22 520-655-0XXX 0000–0999Assigned TELNYX LLC 073H SUPERIOR AZ
2020-09-10 520-380-1XXX 1000–1999Assigned TELNYX LLC 073H CASAGRANDE AZ
2020-09-10 520-476-0XXX 0000–0999Assigned TELNYX LLC 073H TUCSON AZ
2020-07-23 520-438-1XXX 1000–1999Assigned TELNYX LLC 073H WHITLOW AZ
2019-12-16 520-436-0XXX 0000–0999Assigned TELNYX LLC 073H HAYDEN AZ
2019-05-08 520-231-9XXX 9000–9999Assigned TELNYX LLC 073H WHITLOW AZ
2019-05-08 520-412-0XXX 0000–0999Assigned TELNYX LLC 073H TOMBSTONE AZ
2018-04-19 520-231-0XXX 0000–0999Assigned TELNYX LLC 073H WHITLOW AZ
2018-04-19 520-317-9XXX 9000–9999Assigned TELNYX LLC 073H HAYDEN AZ
2018-04-19 520-348-8XXX 8000–8999Assigned TELNYX LLC 073H WILLCOX AZ
2018-04-19 520-402-0XXX 0000–0999Assigned TELNYX LLC 073H BENSON AZ
2018-04-19 520-422-1XXX 1000–1999Assigned TELNYX LLC 073H BISBEE AZ
2018-04-19 520-636-1XXX 1000–1999Assigned TELNYX LLC 073H SAN MANUEL AZ
2018-04-19 520-645-4XXX 4000–4999Assigned TELNYX LLC 073H DOUGLAS AZ
2017-05-30 520-597-9XXX 9000–9999Assigned TELNYX LLC 073H SUPERIOR AZ
2017-03-29 520-340-7XXX 7000–7999Assigned TELNYX LLC 073H CASAGRANDE AZ
2017-03-13 520-347-8XXX 8000–8999Assigned TELNYX LLC 073H TUCSON AZ
2017-03-13 520-895-7XXX 7000–7999Assigned TELNYX LLC 073H SIERRAVIST AZ
2016-12-12 520-341-1XXX 1000–1999Assigned TELNYX LLC 073H NOGALES 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.