u/YamOk7022

Sending a DNS query to NextDNS makes that queried domain being crawled by multiple bots.

My suspicion started when I used NextDNS DoT for a day on my Android and naturally it queried my internal-use domains to NextDNS and I saw random traffic on Cloudflare dashboard both for DNS queries and site crawl.
Note that those internal domains are not visible in CT logs, nor were they crawled anytime before. But I still gave benefit of doubt that maybe I did something wrong.

So today to confirm my suspicion, I a made a fresh NextDNS profile and used dnscrypt-proxy for making DoH queries.
I then queried random subdomains which can't be guessed.

[2026-08-15 07:16:40]	127.0.0.1	asdflkj2.2lkjklj22.xxx.redacted.com	A	PASS	99ms	x-nextdns-test	-

and just like I suspected that subdomain started receiving bot traffic seconds after making a query.

Maybe this is not a question to post here, but I felt that homelabbing is mostly aligned to what I do in a day.

I am a student doing Bachelors in Computer Science passing out next month. I didn't follow the traditional JavaScript Full Stack + DSA path.
Instead I learned so many things like Computer Networks, Linux, coded in C++ and Bash, did DSA for some time.
Built homelab and projects but for my personal needs, not for any job.

Now I am at that stage where I don't know what should I do?
The skills that I have(Cpp, Linux Virtualization, Containers, Networking, Security etc.) are needed for what tech role?
From my initial research I found that DevOps or Site Reliability Engineer is the role but then looked at LinkedIn listings and didn't find anything substantial for a fresher.

So I thought maybe you guys seem to be more aligned to the skills I have, so you can advice me.

What do you guys do?
If you are person earning a living from skills I posses, what do you suggest me to do?

I am just too confused about things.

Why is NextDNS using/selling data?

Need your guidance, anonymous people of Internet