---
description: Configurable parameters for IP Access rules.
title: IP Access rules parameters
image: https://developers.cloudflare.com/og-docs.png
---

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# IP Access rules parameters

Last updated Aug 31, 2026|Copy as Markdown| [View as Markdown](https://fec4cfc0.previews.developers.cloudflare.com/waf/tools/ip-access-rules/parameters/index.md)| [Agent setup](https://fec4cfc0.previews.developers.cloudflare.com/agent-setup/)

An IP Access rule will apply a certain action to incoming traffic based on the visitor's IP address, IP range, Autonomous System Number (ASN), or country.

## 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 `/128` range | `2001:db8::/128` | `2001:db8::` | `2001:db8::` | 1 |
| 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 |

## Autonomous System Number (ASN)

| Type | Example value |
| --- | --- |
| ASN | `AS13335` |

## Country

Specify a country using two-letter [ISO-3166-1 alpha-2 codes ↗](https://www.iso.org/iso-3166-country-codes.html). Additionally, the Cloudflare dashboard accepts country names. For example:

- `US`
- `CN`
- `germany` (dashboard only)

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

- `T1`: [Tor exit nodes](https://fec4cfc0.previews.developers.cloudflare.com/network/onion-routing/) (country name: `Tor`)
- `XX`: Unknown/reserved

Notes

Country block is only available on Enterprise plans.

IP addresses globally allowed by Cloudflare will override a country block via IP Access rules, but they will not override a country block via [custom rules](https://fec4cfc0.previews.developers.cloudflare.com/waf/custom-rules/).

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