A good CIDR calculator here:
http://www.subnet-calculator.com/cidr.php
- Microsoft Certified: Azure DevOps Engineer Expert
- Microsoft Certified: Azure Solutions Architect Expert
- Microsoft 365 Certified: Messaging Administrator Associate
- Microsoft Certified Azure Administrator Associate
- Microsoft Certified: Azure Fundamentals
- Microsoft Certified: Security, Compliance, and Identity Fundamentals
- Microsoft Certified: Azure AI Fundamentals
- MCSA, Microsoft Windows Server
- MCITP, Exchange Server
- ITIL V3 Certified