NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

26 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 636
ONVOY, LLC - MO 24
EXIANT COMMUNICATIONS LLC 1
BANDWIDTH.COM CLEC, LLC - MO 1
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
2015-01-29 636-725-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E FSSCRSTLCY MO
2015-01-09 636-515-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2015-01-09 636-515-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2014-12-26 636-377-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WARRENTON MO
2014-12-22 636-235-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARRENTON MO
2014-12-22 636-628-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER MO
2014-12-15 636-591-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER MO
2014-12-15 636-594-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER MO
2014-12-15 636-628-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER MO
2014-12-11 636-392-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 WASHINGTON MO
2014-11-19 636-366-2XXX 2000–2999Assigned CHARITON VALLEY COMMUNICATIONS CORPORATION 250A MOSCOW ML MO
2014-11-11 636-362-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2014-11-11 636-362-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2014-11-11 636-498-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2014-11-11 636-926-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2014-11-07 636-237-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CHESTERFLD MO
2014-11-04 636-735-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2014-11-04 636-735-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2014-10-29 636-383-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY MO
2014-10-29 636-383-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY MO
2014-10-29 636-725-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FSSCRSTLCY MO
2014-10-29 636-725-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FSSCRSTLCY MO
2014-10-28 636-266-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 WASHINGTON MO
2014-10-22 636-220-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MANCHESTER MO
2014-10-15 636-688-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST CHARLES MO
2014-10-10 636-638-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FSSCRSTLCY MO
2014-10-07 636-283-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WASHINGTON MO
2014-10-07 636-283-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WASHINGTON MO
2014-10-07 636-283-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WASHINGTON MO
2014-10-01 636-515-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2014-09-26 636-591-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER MO
2014-09-26 636-591-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER MO
2014-09-23 636-495-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2014-09-23 636-495-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2014-09-23 636-706-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST PETERS MO
2014-09-23 636-875-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST PETERS MO
2014-09-23 636-875-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST PETERS MO
2014-08-28 636-362-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARVESTER MO
2014-08-28 636-362-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARVESTER MO
2014-08-28 636-495-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HIGH RIDGE MO
2014-08-28 636-515-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2014-08-25 636-484-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANCHESTER MO
2014-07-14 636-259-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GRAYSUMMIT MO
2014-07-14 636-306-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HERCUMPVLY MO
2014-07-07 636-249-0XXX 0000–0999Assigned METROPCS, INC. 5562 UNION MO
2014-07-07 636-306-0XXX 0000–0999Assigned METROPCS, INC. 5562 HERCUMPVLY MO
2014-07-07 636-383-9XXX 9000–9999Assigned METROPCS, INC. 5562 TROY MO
2014-07-01 636-206-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST CHARLES MO
2014-07-01 636-209-9XXX 9000–9999Assigned METROPCS, INC. 5562 FSSCRSTLCY MO
2014-07-01 636-250-8XXX 8000–8999Assigned METROPCS, INC. 5562 ORCHARDFRM MO

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.