IP Info
Find out about the network owner, geographic location and domains hosted on an IP. Knowing the other sites hosted on an IP is helpful in determining the reputation of that IP. The data might not be complete or perfect but it is constantly growing and be improved.
Multi-DNS
Perform a DNS query on more than 500 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 150 blacklists in just a few seconds.
DNS 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.
DNS Timing
Grade your domain's DNS performance starting at the root servers and working down to your local DNS server. Slow DNS can be one of the biggest delays when first visiting a site. Using this tool you can see where the delays are so you can minimize delays.
This may take up to 30 seconds