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

```
STRING uuid.url()
```

**Available in:** all subroutines

Returns the [RFC 4122](https://tools.ietf.org/html/rfc4122) identifier of the
URL namespace, namely the constant `6ba7b811-9dad-11d1-80b4-00c04fd430c8`.

## Example

```vcl
declare local var.url STRING;
set var.url = uuid.version3(uuid.url(), "https://www.example.com/");
# var.url is now "7fed185f-0864-319f-875b-a3d5458e30ac"
```