See if there are problems with your DNS hosting
(Enter zone name, such as "site.com", not an IP).
Check speed of your DNS hosting
Enter domain or host name
Lists contact info for a domain/IP
Enter domain or host name or IP
Check cached DNS at major ISPs.
See if your mail server is in any spam database
Enter IP or host name
Enter IP/IPv6 (or host name)
Shows info about an IP, including city, country
Enter IP
Look up a DNS record (A, MX, NS,SOA, etc.)
Enter DNS server (default is empty)
Traces the route packets take to this host.
Enter host name (or IP/IPv6)
Shows duration for packets to reach a host.