DNS & Network SuperTool
DNS records, email security (SPF, DMARC, DKIM), blacklist check, WHOIS, HTTP headers, ASN info and more.
What is a DNS lookup?
A DNS lookup queries the Domain Name System to resolve a hostname into its associated records. Different record types serve different purposes: A records map a domain to an IPv4 address, MX records define mail servers, TXT records are used for SPF, DKIM and domain verification, and NS records identify the authoritative name servers for a zone.
Common DNS record types
AIPv4 address for a domain
AAAAIPv6 address for a domain
MXMail server for a domain
CNAMEAlias pointing to another domain
TXTSPF, DKIM, verification strings
NSAuthoritative name servers
SOAStart of Authority — zone metadata
PTRReverse DNS — IP to hostname