Understanding CIDR Notation
CIDR (Classless Inter-Domain Routing) notation is a compact format for specifying IP address ranges. It consists of an IP address followed by a slash and a number (e.g., 192.168.1.0/24).
The number after the slash indicates how many bits of the address are fixed, with the remaining bits being variable. For example, /24 means the first 24 bits are fixed, allowing the last 8 bits to vary, covering 256 addresses.
Why CIDR Notation Matters for Shopify Stores
Understanding CIDR notation helps you create more efficient blocking rules. Instead of blocking individual IPs one by one, you can block entire ranges associated with datacenters, hosting providers, or suspicious networks.
How SecurEcommerce Helps with CIDR Notation
IP Blocking
Block malicious traffic by IP address, range, country, region, or ISP
- • Individual IP address blocking
- • IP range (CIDR notation) blocking
- • Country-level blocking with bulk selection
Frequently Asked Questions
Frequently Asked Questions
What does /24 mean in CIDR notation?
/24 means the first 24 bits of the IP address are fixed, leaving 8 bits variable. This covers 256 IP addresses (e.g., 192.168.1.0 through 192.168.1.255).