Domain Name Tests (e.g. example.com)

DNS ReportEnter domain name  ?
See if there are problems with your DNS hosting
www.DNSreport.com
 
DNS TimingEnter domain or host name  ?
Check speed of your DNS hosting
 
WHOIS LookupEnter domain name (or IP)  ?
Lists contact info for a domain/IP (about 200 TLDs!).
  
 
Abuse LookupEnter domain name  ?
Finds abuse contact for a domain from abuse.net.
  
IP Tests (e.g. 192.168.100.1)

Spam database lookupEnter IP (or host name)  ?
See if a mailserver is in any spam database.
  
 
Reverse DNS lookupEnter IP/IPv6 (or host name)  ?
See if your IP has a reverse DNS entry.
  
 
IPWHOIS LookupEnter IP (or domain name)  ?
Lists contact info for an IP (or domain).
  
 
City From IPEnter IP  ?
Uses geolocation to find the city and country of an IP.
  
 
NEW! IP InformationEnter IP
Shows lots of information about an IP.
Hostname Tests (e.g. www.example.com)

DNS lookupEnter domain or host name  ?
Look up a DNS record (A, MX, NS, SOA, etc.)
 
TracerouteEnter host name (or IP/IPv6)  ?
Traces the route packets take to this host.
  
 
PingEnter host name (or IP/IPv6)  ?
Shows how long it takes for packets to reach a host.
  
 
ISP cached DNS lookupEnter domain or host name  ?
Check cached DNS at major ISPs.
Other Tests:
URL deobfuscatorEnter URL  ?
De-obfuscates confusing URLs.
  
 
Free E-mail LookupEnter E-mail address or domain  ?
Is an E-mail address a known free one?
  
CIDR/NetmaskEnter CIDR range or IP  ?
Calculates CIDR ranges (e.g. 192.168.112.0/24).
  
 
E-mail TestEnter E-mail address or domain  ?
Are there problems sending mail to a user or domain?
  
CSE HTML ValidatorEnter website  ?
Finds HTML errors in websites.
  
 
Decimal IPsEnter decimal IP  ?
Converts a decimal IP (e.g. 2130706433) into an IP.