Need to detect and crawl non responsive websites registered through internet. -- 2

As discussed - to develop web crawler from DNS root zone to determine website up/down/etc Will require server environment provided by you plus access to a WHOIS lookup account/API

hello, I have been ReactJS and react native for 2 years and accumulated rich experience. I am familiar with Redux, flux. I have migrated many apps of clients from native to react native. I had worked as a Senior iOS Developer. Worked with Core Text, CALayer to customize the user experience. I am using R programming for over 2 years and have a strong background in it, like Data Organization, Manipulation and analysis/Modeling. I am a professional web developer and a Ruby enthusiast. C and C++ I am working since 3 years. I have 2+ years of experience in developing native and hybrid Android apps with companies. I have experience with app logic, graphics programming, and tools, etc. I have 1+ year experience in Python and have worked on complex and large-scale commercial projects using python.

Sure it's possible, if you were talking about detecting the open/close status of the standard http ports of a web site of giving dns name. If you meant another scenario, a specific description with details is needed.

Worked in projects like website crawling and data extraction. Having good experience in crawling websites. Tools used : Java , JUNIT for extraction code.