Displaying ads through DNS spoofing?

Question

Domain Name System

A request came from the customer: we need to make sure that advertising on all sites is replaced with the one we need. It occurred to me to change this using DNS: everywhere advertising is scooped from one site (domain) in order to replace this domain and immediately distribute it everywhere. Please advise how this can be implemented.

Answer 1

so that

You would read at least when this word can be used.
Ah, got it.
Absolutely not, you are not the first such smart.

Answer 2

If the advertisement is loaded via the HTTPS protocol (and I'm almost sure that it is), then the browser checks what was sent to it in response to its request - it checks the digital signature. To overcome this, you must either own the root certificate, or embed your root certificate into the browser.
Explain the relationship between the customer and those computers on which it is necessary to replace advertising. If these are the customer's computers, then it is easy to do (although I myself did not do this). If the customer = the provider, and the computers belong to his clients, then this is unrealistic. If the customer does not control the channel of customers, then in principle nothing.

Answer 3

Look towards BlackHole DNS
(but keep in mind that if advertising banners are from external domains, then their servers will check your hosting domain and you will not see money for clicks!)