DNS Stuff
Check/Look up:
- DNS Reports - Finds lots of common DNS problems.
- DNS Timing - See how long your DNS servers take to respond.
- WHOIS Lookup - Lists contact info for a domain/IP
- Reverse DNS lookup - See if your IP has a reverse DNS entry.
- DNS lookup - Look up a DNS record (A, MX, NS, SOA, etc.)
- Spam database lookup - See if a mail server is listed in 150+ spam databases.
- IPWHOIS Lookup - Lists contact info for an IP (or domain).
- Abuse Lookup - Finds abuse contact for a domain
- Tracert - Traces the route packets take to this host.
- Ping - Shows how long it takes for packets to reach a host.
- WHOIS Search - True WHOIS search
- IP Routing Lookup - Shows IP routing info, from RADB.
- ISP cached DNS lookup - Check cached DNS at major ISPs.
- NetGeo IP Lookup - Shows (outdated) geographical location of an IP.
- URL deobfuscator - De-obfuscates confusing URLs.
- Free E-mail Lookup - Is an E-mail address a known free one?
- E-mail Test - Are there problems sending mail to a user or domain?
- CIDR/Netmask Lookup - Calculates CIDR ranges (e.g. 192.168.112.0/24).
- CSE HTML Validator - Finds HTML errors in websites.
- Decimal IPs - Converts a decimal IP (e.g. 2130706433) into an IP.
- ... and more.