Changes

# When you own a domain, you also own all the sub-domain like www.mycompany.org, erp.mycompany.org, yyy.xxx.mycompany.org ...; you can map this domain and its sub.domain to either an IP or another domain usually with the company that sold you the domain (there is other type of DNS record but we won't mention them here).

# When you own a domain, you also own all the sub-domain like www.mycompany.org, erp.mycompany.org, yyy.xxx.mycompany.org ...; you can map this domain and its sub.domain to either an IP or another domain usually with the company that sold you the domain (there is other type of DNS record but we won't mention them here).

# In order to link you domain to an IP, you'll need an A DNS record for a IPv4 address or an AAA DNS record for a IPv6 address; in case you don't own a fixed IP you can use a  Dynamic DNS[https://en.wikipedia.org/wiki/Dynamic_DNS] service: there is a daemon runing on your network that will keep updating your IP in the DNS (usually the internet modem/gateway have this funciton).

# In order to link you domain to an IP, you'll need an A DNS record for a IPv4 address or an AAA DNS record for a IPv6 address; in case you don't own a fixed IP you can use a  Dynamic DNS[https://en.wikipedia.org/wiki/Dynamic_DNS] service: there is a daemon runing on your network that will keep updating your IP in the DNS (usually the internet modem/gateway have this funciton).

# In order to link your domain to another domain, you will need to setup a NAME DNS record (e.g. to the domain with an A record).

# In order to link your domain to another domain, you will need to setup a NAME DNS record (e.g. to the domain with an A record).