dnschecker.org
All Tools
DNS, IP, Developer, Productivity and Network Tools are available. Variety of online tools such as Time Card calculator, Domain suggestion, port checker, IP location lookup, MAC Lookup, QR Scanner, NameChecker, Credit Card Generator.
Reverse IP Lookup
In the above example. 4.8.8.in-addr.arpa. represents the identifier of the record. This is the PTR record for A record 8.8.4.4; PTR is the type of DNS record.; google is the value of the record. It is the domain or hostname associated with the IP address.
NS Lookup
In the above example, mydomain.com represents the domain of the record; NS represents the DNS record type.; ns1.mydomain.com represents the value of the record. That is the nameserver for that domain. 3600 is TTL (time to live). It is the time for which the DNS server caches the record.
IP Location Lookup
IP Address Lookup locates the IP address based on coordinates found in geo IP databases. Lookup details about an IP address, includes location, ISP, hostname, type, proxy, and more.
ASN Lookup
ASN Lookup tool tells the ASN WHOIS details. Just enter the AS number and find which company is using that ASN and what the origin of that company is. i.e., country, city, latitude, longitude, state, etc.
Check Website OS
Check what software OS a website is using on its server. The tool tells you which operating system a website is running on. The most popular server operating systems are Ubuntu and CentOS by Linux.