Nielsterp

Hi there, I have a website nielsterp.heliohost.org, and I own two domain names that I would like tu use here. I have created two subdomains as public_html/domain_name1/ and public_html/domain_name2/, and I have "parked the two domains and redirected them to /domain_name1/ and /domain_name2/. Now I wanted to create a "A" record for my two domains, but to create a "A" record I need an IP-address. Wich address should I point my domains to ? I know that heliohosts nameservers is ns1.heliohost.org and ns2.heliohost.org - but I can only enter ONE IP-adress in my "A" record. Then I can make another "A" record, but not with the same domain name. As I have understood DNS, a domain can only be pointed to one unique IP-address ? Where can I find the IP of my website ? Hope somebody can help me making this work ! Thanks in advance !