---
title: std.anystr2ip
summary: null
url: >-
  https://www.fastly.com/documentation/reference/vcl/functions/strings/std-anystr2ip
---

```
IP std.anystr2ip(STRING addr, STRING fallback)
```

**Available in:** all subroutines

Converts the string `addr` to an IP address (IPv4 or IPv6). If conversion fails,
`fallback` will be returned.

This function accepts a wider range of formats than
`std.str2ip()`: Each number may be specified
in hexadecimal (`0x...`), octal (`0...`), or decimal format. There may be
fewer than four numbers, in which case the last number is responsible for the
remaining bytes of the IP. For example,`0x8.010.2056` is equivalent to
`8.8.8.8`.

We recommend using a fallback IP address that's meaningful for your
particular Fastly service.

## Example

```vcl
if (std.anystr2ip("0xc0.0.01001", "192.0.2.2") ~ my_acl) {
    ...
}
```