Robuta

https://webtoolsfirst.com/reverse-dns-lookup
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https://nslookup.eu/country-by-ip/
Easy to use web-based country by ip service. Country by IP - Detects country by IP or hostname.
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https://ping.eu/
Easy to use web-based service.
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https://4alltools.com/en/
4 All Tools - DNS Tools (MX Lookup, DNS Lookup, Whois Lookup, Blacklists Lookup, Reverse IP Lookup, Dig @ Google Public DNS) | Network Tools (Ping, Nmap,...
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https://www.dnswatch.info/
Lookup DNS records with exact performance measuring, monitor your dns servers!
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