DNSstuff


Domain Tests (e.g. example.com)

DNS Report Enter domain name  ?
Finds lots of common DNS problems.
www.DNSreport.com
 
DNS Timing Enter domain/host name  ?
See how long your DNS servers take to respond
 
WHOIS Lookup Enter domain name (or IP)  ?
Lists contact info for a domain/IP (about 150 TLDs!).
  
 
Abuse Lookup Enter domain name  ?
Finds abuse contact for a domain from abuse.net.
  
 
WHOIS Search Enter partial domain name  ?
True WHOIS search, using www.whois.sc.
  
IP Tests (e.g. 192.168.100.1)

Spam database lookup Enter IP (or host name)  ?
See if a mail server is listed in 150+ spam databases.
  
 
Reverse DNS lookup Enter IP/IPv6 (or host name)  ?
See if your IP has a reverse DNS entry.
  
 
IPWHOIS Lookup Enter IP (or domain name)  ?
Lists contact info for an IP (or domain).
  
 
NetGeo IP Lookup Enter IP (or domain name)  ?
Shows geographical location of an IP (or domain).
  
 
IP Routing Lookup Enter IP  ?
Shows IP routing info, from RADB.
  
Hostname Tests (e.g. www.example.com)

DNS lookup Enter domain/host name  ?
Look up a DNS record (A, MX, NS, SOA, etc.)
 
Tracert Enter host name (or IP)  ?
Traces the route packets take to this host.
  
 
Ping Enter host name (or IP)  ?
Shows how long it takes for packets to reach a host.
  
 
ISP cached DNS lookup Enter domain/host name  ?
Check cached DNS at major ISPs.
Other Tests:
URL deobfuscator Enter URL  ?
De-obfuscates confusing URLs.
  
 
Free E-mail Lookup Enter E-mail address or domain  ?
Is an E-mail address a known free one?
  
CIDR/Netmask Lookup Enter CIDR range (or IP)  ?
Calculates CIDR ranges (e.g. 192.168.112.0/24).
  
Decimal IPs Enter decimal IP  ?
Converts a decimal IP (e.g. 2130706433) into an IP.
  

There is currently no cost for the DNS report or the other tests, and it is ad-free. You are free to link directly to this site. The 2,000,000+ hits a month are all sponsored by Computerized Horizons. If you use these tools and need anti-spam or anti-virus software for your mail server, please consider looking at their Declude products. If you want your email filtered for you, consider Spam Soap. Thanks!