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

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

**Available in:** all subroutines

An alias of `std.str2ip()`.

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