Pentru verificarea propagarii DNS:
https://www.whatsmydns.net
Verifica propagarea DNS pe 21 de servere din locatii diferite (aleator). La fiecare refresh al paginii se schimba locatiile.
http://ceipam.eu/en/dnslookup.php
Verifica propagarea DNS la diferiti provideri de internet (inclusiv RDS, UPC, Romtelecom, Vodafone, Euroweb)
Altele:
http://viewdns.info/
http://www.nexcess.net/resources/tools/global-dns-checker/
http://checkdnspropagation.com/
https://www.dnsunlimited.com/propagation_check