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smartdns/en/docs/config/domain-address.md
2023-08-06 22:00:31 +08:00

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# Specify Domain Address
In addition to blocking ads, `address` can also be used to specify the IP address of a domain.
## Basic Configuration Method
1. Use the `address /domain/ip` option to specify the IP, such as:
```shell
address /example.com/1.2.3.4
address /example.com/4.5.6.7,8.9.10.11,12.13.14.15
```
In the `address` option:
* `/domain/` uses suffix matching algorithm, including subdomains.
* `ip`: can be an IPv6 or IPv4 address.
1. Specify IPv6
```shell
address /example.com/::1
```
1. The prefix wildcard matches the main domain name
```shell
// prefix wild card
*-a.example.com
// only match subdomains
*.example.com
// only match the main domain name
-.example.com
```
Note: * and - are only supported at the beginning of the domain name. Wording in other locations is not supported.
## Automatically Expand PTR Records Corresponding to address
If you want to expand the PTR record corresponding to the above `address`, you can use the `expand-ptr-from-address` switch to turn on automatic expansion. The `expand-ptr-from-address` parameter can be set repeatedly, and the parameter takes effect for the `address` set after it.
```shell
expand-ptr-from-address yes
address /example.com/1.2.3.4
expand-ptr-from-address no
```