Upload a large list of IP addresses and concurrently get their host names.
Get basic statistics on the frequency of each URL in the dataset (count, percentage and cumulative percentage). This can show the popularity of IP addresses and can uncover some insights on traffic, crawling behaviour, or even malicious behavior.
Get errors per domain in case there are any
You can easily run the host command from the command line and get the host name of that IP address:
$ host google.com google.com has address 172.217.168.14 google.com has IPv6 address 2a00:1450:400a:808::200e google.com mail is handled by 10 smtp.google.com.
The reality is that many times you have thousands if not hundreds of thousands of IPs that you want to check. This app runs this in bulk for you.
User-agent strings can easiy be manipulated (spoofed) by software, and you want to know whether or no a user-agent that declares itself as a certain crawler actually belongs to that company.
One of the main tasks in checking, parsing, and analyzing log files is verifying the IP addresses in your log file. This is important in checking errors, interesting/unusual behavior, and verification of user-agents as mentioned above.