Can you be more specific please?
You can get some details from the whois (e.g. www.whois.sc/yourdomain.tld
This should tell you who the registrar is and what the nameservers are set to.
To get individual DNS records, you can use dig on a linux host or nslookup on windows (and Linux).
There are also some web-based services that will do DNS lookups.
And you can try www.dnsreport.com
to get all sorts of info on the domain.
Does any of that help? If not, please can you let us know exactly what you are looking for?