Parameters
An IP Access rule will apply a certain action to incoming traffic based on the visitor’s IP address, IP range, country, or Autonomous System Number (ASN).
IP address
| Type | Example value |
|---|---|
| IPv4 address | 192.0.2.3 |
| IPv6 address | 2001:db8:: |
IP range
| Type | Example value | Start of range | End of range | Number of addresses |
|---|---|---|---|---|
IPv4 /24 range | 192.0.2.0/24 | 192.0.2.0 | 192.0.2.255 | 256 |
IPv4 /16 range | 192.168.0.0/16 | 192.168.0.0 | 192.168.255.255 | 65,536 |
IPv6 /64 range | 2001:db8::/64 | 2001:db8:: | 2001:db8:0000:0000:ffff:ffff:ffff:ffff | 18,446,744,073,709,551,616 |
IPv6 /48 range | 2001:db8::/48 | 2001:db8:: | 2001:db8:0000:ffff:ffff:ffff:ffff:ffff | 1,208,925,819,614,629,174,706,176 |
IPv6 /32 range | 2001:db8::/32 | 2001:db8:: | 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff | 79,228,162,514,264,337,593,543,950,336 |
Country
You can specify a country by name or two-letter ISO-3166-1 alpha-2 codes. For example:
USgermanyCN
Cloudflare uses the following special country alpha-2 codes that are not part of the ISO:
T1: Tor exit nodes (country name:Tor)XX: Unknown/reserved
Autonomous System Number (ASN)
| Type | Example value |
|---|---|
| ASN | AS13335 |