NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 573
BANDWIDTH.COM CLEC, LLC - MO 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
2026-09-14 573-731-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MONROECITY MO
2026-09-02 573-618-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MARBLEHILL MO
2026-08-19 573-773-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E PALMYRA MO
2026-08-18 573-571-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CAPEGIRARD MO
2026-07-02 573-859-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BELLE MO
2026-06-24 573-274-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E POTOSI MO
2026-06-16 573-302-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LKOZKOSBCH MO
2026-05-13 573-287-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E PIEDMONT MO
2026-05-13 573-399-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E NAYLOR MO
2026-04-21 573-935-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E DEXTER MO
2026-03-24 573-241-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CUBA MO
2026-03-19 573-600-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HANNIBAL MO
2026-03-03 573-660-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E DONIPHAN MO
2025-11-12 573-440-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E FREDERCKTN MO
2025-11-12 573-531-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E TIMBER MO
2025-09-15 573-791-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E EDGAR SPG MO
2025-06-25 573-964-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LKOZKOSBCH MO
2024-08-14 573-258-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SIKESTON MO
2023-03-27 573-269-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E OATES MO
2022-06-01 573-538-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BOSS MO
2022-01-26 573-362-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E FISK MO
2022-01-25 573-463-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BUNKER MO
2022-01-25 573-921-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E EWING MO
2022-01-24 573-843-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CARUTHRSVL MO
2021-12-07 573-650-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E POTOSI MO
2021-11-10 573-602-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ELDON MO
2021-11-02 573-930-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HAYTI MO
2021-10-26 573-668-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BOURBON MO
2021-09-10 573-640-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SILEX MO
2021-09-09 573-828-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E VANDALIA MO
2021-09-08 573-307-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E WINONA MO
2021-09-03 573-425-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HUNNEWELL MO
2021-08-19 573-492-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MARTINSBG MO
2021-08-19 573-503-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MIDDLETOWN MO
2021-08-16 573-812-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CUBA MO
2021-07-26 573-740-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BENTON MO
2021-06-11 573-316-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CARDWELL MO
2021-05-20 573-995-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E BELLFLOWER MO
2021-02-10 573-633-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SHELBYVL MO
2020-10-20 573-542-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CHARLESTON MO
2020-03-10 573-381-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CAPEGIRARD MO
2020-03-10 573-699-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAFE MO
2020-03-10 573-758-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E GRANDIN MO
2020-02-19 573-637-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LESTERVL MO
2020-02-04 573-255-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E PONDER MO
2020-02-04 573-656-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E OLNEY MO
2020-02-03 573-566-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E STOVER MO
2020-01-30 573-399-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E NAYLOR MO
2020-01-30 573-669-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E NEW HARTFD MO
2020-01-25 573-746-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LKOZKOSBCH MO

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.