Posted By: cazatrucos¿alguna ayuda o sugerencia?

Are there restrictions if I change the nameservers for my .de domain name?

Yes. The following nameserver requirements apply to all .de domain names:

* Two nameservers which must be authoritative. You can verify if your nameserver is authoritative by visiting http://www.denic.de/en/background/nast.html and entering the domain name and the nameserver the domain name is using to receive a reply. If the answer at ZoneCheck lists a Non-authoritative answer at the top of the nameserver list, it is not authoritative. Remember that the nameservers that you are trying to use at the registry must be the only ones listed on each nameserver that you are trying to use. The nameservers listed in the nameserver's zone file for the domain name must match the nameservers you are trying to use for the domain name or it will be considered non-authoritative.
* Each nameserver must be on a separate class C network (i.e. the first three octets cannot be the same, 216.1.69.1 and 68.42.99.120 would be valid, for example.)
* An SOA (Start of Authority) Refresh value between 10000 and 86400 seconds is required.
* A Retry value between 1800 and 28800 seconds is required.
* A Time to Live (TTL) value between 180 and 345600 is required.
* An MX record must be specified which resolves to a valid mail server for the life of the domain name registration, not just for the registration itself.
* Serial numbers for all nameserver zones for the domain name must match.