• 2021.01.19 Maintenance MatNavi service suspension due to system maintenance (1/25 13:00-17:00) MatNavi
• 2020.11.26 Maintenance DICE service and website will be temporally unavailable (12/5 9:00-12:00)
• 2020.11.09 Maintenance Service suspension due to electrical inspection（11/13-16） MDR
• 2020.11.09 Maintenance Suspension of DICE website due to electrical inspection（11/13-16）
• 2020.08.03 Maintenance Notice of service suspension (8/5, 18:00-18:30 JST) MDR

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