For the DBL,it is only to check the domain name and RBL is only to check the IPs,but at Xeams,it check the domain and further extract the IP and check RBL too,if IP is in RBL,it return DBL listed.

For example,check from check.spamhaus.org,the subdomain sctrack.sendcloud.net is clean,even it is A record's IP is SBL,it should be been deemed as DBL,as DBL is domain base,not IP base,another example cpt-booking.chunsing-logistics.com is same,domain check is clean.

Is it possible only to check domain on DBL without further check whether it's IP in RBL or not?