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
2013-02-15 636-364-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST CLAIR MO
2013-02-15 636-387-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2013-02-15 636-498-1XXX 1000–1999Assigned METROPCS, INC. 5562 HARVESTER MO
2013-02-06 636-791-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WRIGHTCITY MO
2013-02-05 636-224-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HERCUMPVLY MO
2013-02-05 636-678-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 FENTON MO
2013-02-05 636-775-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TROY MO
2013-02-01 636-336-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 HARVESTER MO
2013-02-01 636-385-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 OFALLON MO
2013-01-04 636-775-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TROY MO
2012-12-27 636-244-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARVESTER MO
2012-12-27 636-253-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2012-12-27 636-375-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2012-12-19 636-385-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2012-12-19 636-479-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 HERCUMPVLY MO
2012-12-14 636-432-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WASHINGTON MO
2012-12-03 636-730-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CHESTERFLD MO
2012-12-03 636-730-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CHESTERFLD MO
2012-11-29 636-775-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY MO
2012-11-19 636-856-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WENTZVILLE MO
2012-11-16 636-200-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MANCHESTER MO
2012-11-15 636-445-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WENTZVILLE MO
2012-11-06 636-856-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WENTZVILLE MO
2012-11-06 636-856-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WENTZVILLE MO
2012-11-05 636-244-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HARVESTER MO
2012-11-05 636-549-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K EUREKA MO
2012-10-19 636-439-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2012-10-19 636-439-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2012-10-19 636-439-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2012-10-11 636-875-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST PETERS MO
2012-10-01 636-600-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FENTON MO
2012-09-27 636-377-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WARRENTON MO
2012-09-18 636-432-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WASHINGTON MO
2012-09-12 636-757-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST CHARLES MO
2012-09-10 636-377-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WARRENTON MO
2012-08-27 636-856-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WENTZVILLE MO
2012-08-14 636-748-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 CEDAR HILL MO
2012-08-13 636-229-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2012-08-13 636-244-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2012-08-13 636-720-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2012-08-13 636-936-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2012-08-09 636-229-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HARVESTER MO
2012-07-19 636-725-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FSSCRSTLCY MO
2012-07-19 636-725-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FSSCRSTLCY MO
2012-07-13 636-244-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2012-07-13 636-373-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST CHARLES MO
2012-07-05 636-200-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 MANCHESTER MO
2012-07-05 636-212-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 MAXVILLE MO
2012-07-05 636-439-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2012-06-29 636-393-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PACIFIC 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.