Zone transfer

We currently don’t allow zone-transfers from L.ROOT-SERVERS.NET. instead, the same zones that exists on l.root-servers.net and other parts of our infrastructure can be transferred from servers below using AXFR DNS method.

DNS Engineering AXFR Servers:

```
lax.xfr.dns.icann.org
```
```
iad.xfr.dns.icann.org
```

Zones served:

```
. (root)
```
```
in-addr.arpa.
```
```
arpa.
```
```
root-servers.net.
```
```
ipv4only.arpa.
```
```
ip6.arpa.
```
```
ip6-servers.arpa.
```
```
mcast.net.
```
```
224.in-addr.arpa.
```
```
225.in-addr.arpa.
```
```
226.in-addr.arpa.
```
```
227.in-addr.arpa.
```
```
228.in-addr.arpa.
```
```
229.in-addr.arpa.
```
```
230.in-addr.arpa.
```
```
231.in-addr.arpa.
```
```
232.in-addr.arpa.
```
```
233.in-addr.arpa.
```
```
234.in-addr.arpa.
```
```
235.in-addr.arpa.
```
```
236.in-addr.arpa.
```
```
237.in-addr.arpa.
```
```
238.in-addr.arpa.
```
```
239.in-addr.arpa.
```