Your Subdomain engineering.zomato.com is Pointing to Tumblr.com
You should immediately remove the DNS-entry for engineering.zomato.com is Pointing to Tumblr.com.. Any One Can Claim That Domain , Please Read The Advisory Below.
Remediation Please make sure you're always going through your DNS-entries so no subdomains are pointing to external services you do not use.
We've written an advisory about this at Detectify: http://blog.detectify.com/post/100600514143/hostile-subdomain-takeover-using-heroku-github-desk
Where you can read more about this sort of attack.
I Have Done NSLookup For POC :-
nslookup engineering.zomato.com Server: 192.168.188.2 Address: 192.168.188.2#53
Non-authoritative answer: engineering.zomato.com canonical name = domains.tumblr.com. Name: domains.tumblr.com Address: 220.127.116.11 Name: domains.tumblr.com Address: 18.104.22.168