IP Address Range Lookup
Understand any IP address block
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How to Use This Tool
- Enter CIDR notation.
- View network, first/last host, and count.
- Large ranges show summary only.
About This Tool
IP range lookup explains the boundaries of a CIDR block — useful for firewall rules, routing, and IP allocation planning.
Common use cases
- •Check your public IP before remote work or gaming
- •Verify geolocation and ISP for troubleshooting
- •Look up suspicious IPs in abuse reports
Frequently Asked Questions
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