NumberResearch Membership · Data 09/20/2026

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 551
TELNYX LLC 38
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
2026-01-20 551-421-8XXX 8000–8999Assigned TELNYX LLC 073H UNION CITY NJ
2025-08-05 551-391-5XXX 5000–5999Assigned TELNYX LLC 073H TEANECK NJ
2022-02-28 551-688-0XXX 0000–0999Assigned TELNYX LLC 073H LEONIA NJ
2022-02-04 551-341-7XXX 7000–7999Assigned TELNYX LLC 073H FAIR LAWN NJ
2021-12-14 551-315-8XXX 8000–8999Assigned TELNYX LLC 073H RAMSEY NJ
2021-12-08 551-321-0XXX 0000–0999Assigned TELNYX LLC 073H PARK RIDGE NJ
2021-11-30 551-330-0XXX 0000–0999Assigned TELNYX LLC 073H CLIFFSIDE NJ
2021-11-30 551-755-8XXX 8000–8999Assigned TELNYX LLC 073H CLOSTER NJ
2021-11-23 551-338-8XXX 8000–8999Assigned TELNYX LLC 073H JERSEYCITY NJ
2021-11-11 551-322-0XXX 0000–0999Assigned TELNYX LLC 073H TEANECK NJ
2021-11-11 551-366-0XXX 0000–0999Assigned TELNYX LLC 073H ENGLEWOOD NJ
2021-10-19 551-651-0XXX 0000–0999Assigned TELNYX LLC 073H OAKLAND NJ
2021-10-14 551-326-5XXX 5000–5999Assigned TELNYX LLC 073H BAYONNE NJ
2021-10-14 551-946-8XXX 8000–8999Assigned TELNYX LLC 073H HACKENSACK NJ
2021-10-14 551-946-9XXX 9000–9999Assigned TELNYX LLC 073H HACKENSACK NJ
2021-07-21 551-324-0XXX 0000–0999Assigned TELNYX LLC 073H WESTWOOD NJ
2021-06-25 551-600-7XXX 7000–7999Assigned TELNYX LLC 073H WYCKOFF NJ
2021-01-21 551-306-0XXX 0000–0999Assigned TELNYX LLC 073H UNION CITY NJ
2021-01-21 551-400-9XXX 9000–9999Assigned TELNYX LLC 073H CRAGMERE NJ
2021-01-19 551-230-0XXX 0000–0999Assigned TELNYX LLC 073H ENGLEWOOD NJ
2020-05-27 551-345-0XXX 0000–0999Assigned TELNYX LLC 073H HASBROKHTS NJ
2019-11-27 551-261-9XXX 9000–9999Assigned TELNYX LLC 073H JERSEYCITY NJ
2019-11-25 551-304-0XXX 0000–0999Assigned TELNYX LLC 073H RUTHERFORD NJ
2019-09-27 551-219-5XXX 5000–5999Assigned TELNYX LLC 073H HACKENSACK NJ
2017-04-24 551-231-6XXX 6000–6999Assigned TELNYX LLC 073H OAKLAND NJ
2017-04-24 551-900-7XXX 7000–7999Assigned TELNYX LLC 073H DUMONT NJ
2017-04-21 551-209-4XXX 4000–4999Assigned TELNYX LLC 073H WYCKOFF NJ
2017-04-21 551-248-5XXX 5000–5999Assigned TELNYX LLC 073H CLOSTER NJ
2017-04-21 551-249-3XXX 3000–3999Assigned TELNYX LLC 073H PARK RIDGE NJ
2017-04-21 551-272-0XXX 0000–0999Assigned TELNYX LLC 073H LEONIA NJ
2017-04-21 551-274-5XXX 5000–5999Assigned TELNYX LLC 073H KEARNY NJ
2017-04-21 551-276-4XXX 4000–4999Assigned TELNYX LLC 073H RIDGEWOOD NJ
2017-03-06 551-216-6XXX 6000–6999Assigned TELNYX LLC 073H BAYONNE NJ
2017-03-03 551-205-8XXX 8000–8999Assigned TELNYX LLC 073H JERSEYCITY NJ
2017-03-03 551-234-4XXX 4000–4999Assigned TELNYX LLC 073H CLIFFSIDE NJ
2017-03-03 551-250-0XXX 0000–0999Assigned TELNYX LLC 073H FAIR LAWN NJ
2017-03-03 551-264-7XXX 7000–7999Assigned TELNYX LLC 073H RAMSEY NJ
2016-12-06 551-278-1XXX 1000–1999Assigned TELNYX LLC 073H ORADELL NJ

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.