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
2011-02-11 636-439-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 OFALLON MO
2011-02-09 636-775-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K TROY MO
2011-02-07 636-366-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MOSCOW ML MO
2011-02-07 636-463-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FORISTELL MO
2011-02-04 636-489-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 CHESTERFLD MO
2011-02-02 636-377-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WARRENTON MO
2011-02-02 636-791-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WRIGHTCITY MO
2011-01-20 636-565-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 DE SOTO MO
2011-01-19 636-266-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 WASHINGTON MO
2011-01-18 636-439-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2011-01-12 636-487-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST CHARLES MO
2011-01-12 636-582-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 UNION MO
2011-01-11 636-486-5XXX 5000–5999Assigned METROPCS, INC. 5562 HARVESTER MO
2011-01-10 636-376-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2011-01-10 636-980-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2011-01-03 636-875-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST PETERS MO
2010-12-16 636-681-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CHESTERFLD MO
2010-12-16 636-681-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CHESTERFLD MO
2010-12-09 636-300-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 HARVESTER MO
2010-12-08 636-741-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 IMPERIAL MO
2010-12-07 636-671-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HIGH RIDGE MO
2010-12-07 636-980-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OFALLON MO
2010-11-09 636-627-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST CHARLES MO
2010-11-09 636-627-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST CHARLES MO
2010-11-05 636-395-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST CHARLES MO
2010-11-04 636-486-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-10-20 636-266-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 WASHINGTON MO
2010-10-19 636-543-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 FSSCRSTLCY MO
2010-09-28 636-336-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-344-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-344-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-344-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-345-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-345-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-345-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-442-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-477-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E HARVESTER MO
2010-09-28 636-534-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CHESTERFLD MO
2010-09-28 636-549-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 EUREKA MO
2010-09-28 636-579-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2010-09-13 636-486-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C HARVESTER MO
2010-09-10 636-281-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2010-08-12 636-212-7XXX 7000–7999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MAXVILLE MO
2010-08-12 636-212-8XXX 8000–8999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MAXVILLE MO
2010-08-12 636-212-9XXX 9000–9999Assigned ONVOY, LLC - MO 093F MAXVILLE MO
2010-08-12 636-222-6XXX 6000–6999Assigned ONVOY, LLC - MO 093F CEDAR HILL MO
2010-08-12 636-222-9XXX 9000–9999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CEDAR HILL MO
2010-08-12 636-333-8XXX 8000–8999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MAXVILLE MO
2010-08-12 636-333-9XXX 9000–9999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F MAXVILLE MO
2010-08-12 636-548-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MAXVILLE 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.