check dns - SERP Analysis

https://dnschecker.org/

https://mxtoolbox.com/DNSLookup.aspx

https://ipleak.net/

https://dnscheck.tools/

https://www.whatsmydns.net/

https://easydmarc.com/tools/dns-record-checker

https://www.nslookup.io/

https://learn.microsoft.com/en-us/windows-server/networking/dns/troubleshoot/troubleshoot-dns-server

https://toolbox.googleapps.com/apps/dig/

https://dnsmap.io/