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Parameters
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IP Access rule parameters

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:

  • US
  • germany
  • CN

Cloudflare uses the following special country alpha-2 codes that are not part of the ISO:

{{

}}

  • Block by country is only available on Enterprise plans.
  • IP addresses globally allowed by Cloudflare will override an IP Access rule country block, but they will not override a country block via WAF custom rules. {{
}}

Autonomous System Number (ASN)

Type Example value
ASN AS13335