If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online (http://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).
nslookup followed by the domain name will display the âA Recordâ ( IP Address ) of the domain. $ nslookup redhat.com Server: 192.168.19.2 Address: 192.168.19.2#53 Non-authoritative answer: Name: redhat.com Address: 209.132.183.181. In the above output, server refers to the IP address of the DNS server. Then the below section provides the âA Recordâ ( IP Address ) of the domain âredhat.comâ.
NSLookup is a very useful tool for testing specific DNS servers. For instance, if you are having DNS resolution issues or if you are transferring your DNS records to different DNS servers, you can use nslookup to test the authoritative name servers for your domain.