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 773
TELNYX LLC 13
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
2022-12-05 773-599-5XXX 5000–5999Assigned TELNYX LLC 073H CHICGOZN08 IL
2022-11-16 773-309-2XXX 2000–2999Assigned TELNYX LLC 073H CHICGOZN05 IL
2022-10-21 773-461-1XXX 1000–1999Assigned TELNYX LLC 073H CHICGOZN02 IL
2021-03-02 773-915-6XXX 6000–6999Assigned TELNYX LLC 073H CHICGOZN07 IL
2020-12-21 773-285-6XXX 6000–6999Assigned TELNYX LLC 073H CHICGOZN07 IL
2020-10-13 773-241-7XXX 7000–7999Assigned TELNYX LLC 073H CHICGOZN07 IL
2020-10-12 773-302-8XXX 8000–8999Assigned TELNYX LLC 073H CHICGOZN02 IL
2020-10-12 773-389-7XXX 7000–7999Assigned TELNYX LLC 073H CHICGOZN09 IL
2019-12-06 773-207-0XXX 0000–0999Assigned TELNYX LLC 073H CHICGOZN10 IL
2019-11-22 773-337-2XXX 2000–2999Assigned TELNYX LLC 073H CHICGOZN11 IL
2019-03-06 773-249-0XXX 0000–0999Assigned TELNYX LLC 073H CHICGOZN11 IL
2017-04-12 773-337-7XXX 7000–7999Assigned TELNYX LLC 073H CHICGOZN11 IL
2017-03-07 773-302-2XXX 2000–2999Assigned TELNYX LLC 073H CHICGOZN02 IL

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.