All links are available on original post @ https://findingthings.xyz/curated-list-of-utilities-for-hosting-engineers
If you are an infrastructure engineer or a hosting admin , or work anything remote , you might love these tools which will make your life easier.. [Part I]
There are many DNS checkers out there, but here is what i use..
NSLOOKUP – is a network administration command-line tool available in many computer operating systems for querying the Domain Name System to obtain domain name or IP address mapping, or other DNS records. – usage
DIG – is a tool for querying DNS nameservers for information about host addresses, mail exchanges, nameservers, and related information – usage
Whatsmydns.net – whatsmydns.net lets you instantly perform a DNS lookup to check a domain name’s current IP address and DNS record information against multiple name servers located in different parts of the world.
mxtoolbox – mxtoolbox lets you search all of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information. And you’ll have a chronological history of your results.
Rewrite Checker – want to check whether there is a any redirect between a source and destination, here is a simple tool
Bulk Checker – Want to check 100’s of website’s status codes etc? here is the tool just for you – Easily check status codes, response headers, and redirect chains.
Redirect Path – Check the redirect tree right on your browser [ Chrome ] [Firefox]
cURL – a wonderful utility to check a loads of things including redirects – usage, usage2