---
title: std.ip2str
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/functions/strings/std-ip2str
---

```
STRING std.ip2str(IP ip)
```

**Available in:** all subroutines

Converts the IP address (IPv4 or IPv6) to a string.

The Domain Name Service (DNS) is not consulted, so the numeric form is returned.

The inverse conversion is available as
`std.str2ip()`.

## Example

```vcl
if (std.ip2str(std.str2ip(req.http.Fastly-Client-IP, "192.0.2.2")) ~ my_acl) {
  ...
}
```