Free DNS Resolvers

Help us gather domain and IP intelligence by using our free public DNS resolvers. All you have to do is change your primary and secondary DNS servers to 69.56.173.18 and 207.192.72.227.

IP Info

Find out about the network owner, geographic location, abuse contacts and domains hosted on an IP. Knowing the other sites on an IP is helpful in determining the reputation of that IP.

Multi-DNS

Perform a DNS query on more than 400 high traffic DNS servers. Excellent when trying to debug a DNS problem or to find the status of a recent record change. Currently supports address (A), IPv6 address (AAAA), alias (CNAME), nameserver (NS), mail exchanger (MX), rDNS (PTR), service (SRV) and text (TXT) records.

DNSBL

Check the blacklist status of an IP against more than 100 blacklists in just a few seconds.

Multi-MTR

Simultaneously run MTR from several servers located around the world.

DNS Health Check

Find errors in your DNS config and get a general health report. DNS Check will check for many common and subtle errors in DNS and zone files and offer recommendations to correct the problem.

Page Load Timing

Test the page load time of a single web page from multiple locations around the world simultaneously.