Ip address who is domain name lookup

For example, each of the At this point the operating system, now in possession of www. For more information of this process, we wrote a blog post on the anatomy of HTTP. As mentioned earlier, this is worst case scenario in terms of the length of time to complete the resolution. In most cases, if the user has recently accessed URLs of the same domain, or other users relying on the same DNS resolver have done such requests, there will be no DNS resolution required, or it will be limited to the query on the local DNS resolver.

We will cover this in later articles. The end user has no idea what is happening behind the scenes; they are simply are waiting for the page to load and all of these DNS queries have to happen before the browser can request the webpage.

This is why we stress the importance of fast DNS. You can have a fast and well-built site, but if your DNS is slow, your webpage will still have poor response time. Start a Trial Log In. Catchpoint Platform. Monitoring Use Cases. Synthetic Monitoring. Monitor everything from development to production that can affect your end-user experience. You can also enter other identifiers, and Domain Dossier will act on the domains or IP addresses they contain:.

Domain Dossier displays Whois records for the longest registered domain that contains the domain you entered or the domain associated with the IP address you entered. For example, if you enter www. Domains often have two Whois records, one from the registry and a more detailed one from the registrar, and Domain Dossier will display both.

It displays record text verbatim except that it removes bulky headers and footers when it can. The Whois records for an IP network provide information about its allocation or assignment such as:. Domain Dossier displays a Whois record for the IP network allocation or assignment that includes the IP address you entered or the first IP address associated with the domain you entered.

IP addresses can have multiple associated Whois records, but Domain Dossier only displays the most specific one. As with domain Whois records, it will remove bulky headers and footers when it can.

This tool returns only address A records. For other types of domain name records, use NsLookup. The Email Checker allows you to test the validity and reachability of an email address.

It makes sure that the email is syntactically valid and that it is available via an SMTP server. If you notice odd behavior with your HTTP connections, you can use this tool to troubleshoot the top-level domain.

Alternatively, you can use it to check for redirection — minimizing these optimizes any links you might be using. In some circumstances, you might need to convert punycode back to the original domain name. To determine if a server is responding to requests, you can use Online Ping.