howto/Getting-started.md
... ...
@@ -80,7 +80,9 @@ To register an IPv4 network prefix, simply create an `inetnum` object.
80 80
81 81
You may choose your network prefix in one of the currently open netblocks. There is also a [graphical visualisation of the assigned ranges](http://109.24.208.244:8888/dn42-netblock-visu/registry.html).
82 82
83
-The current guideline is to allocate a /25 by default, keeping space for a /23. You may allocate more than a /25 if you need to, but no more than a /23. In particular, if you want reverse DNS for your prefix, you will need at least a /24. (check? maybe the scripts in the repo are clever enough)
83
+The current guideline is to allocate a /25 by default, keeping space for a /23. You may allocate more than a /25 if you need to, but no more than a /23.
84
+
85
+**Note:** Reverse DNS works with _any_ prefix length, as long as your [recursive nameserver](/services/DNS) supports [RFC 2317](https://www.ietf.org/rfc/rfc2317.txt).
84 86
85 87
86 88
# Get some peers