xnnd.com tools for dns
Domain Intelligence:

MX Lookup:
SPF Lookup:
DMARC Lookup:
rDNS Lookup:
rDNS Scan:

Other DNS Lookup:

ABUSE.NET Lookup: 
WHOIS Lookup: 
HSTS Check: 
SNDS Lookup: 
CIDR Calculator: 

XNND Authentication Tester
Need more tools? Check out wiseTools
For more information on spam, deliverability and blacklists,
visit Spam Resource and DNSBL Resource
.127 sec | Svr: 2 | xnnd.com access on Thu Jul 20 20:38:13 EDT 2017 from 54.92.180.46
 xnnd simple tools for dns by al iverson since 2008