IP address: Where do I get this information?

[Portuguese]
Boa tarde. Estou desenvolvendo um site que fará uma requisição para um serviço externo. Para aumentar a segurança da requisição, a empresa dona desse serviço externo está pedindo o ip do site para habilitar a requisição. Onde consigo essa informação? Obrigado pela sua ajuda.

[English]
Good afternoon. I am developing a website that will make a request for an external service. To increase the security of the request, the company that owns this external service is asking for the site ip to enable the request. Where do I get this information? Thanks for your help.

@bulnes.bruno Welcome to the Netlify community.

This may be difficult because Netlify serves files from a worldwide CDN, which uses various IP addresses. You should ask if that company has another way of verifying the source(s) of requests.

Hi, @bulnes.bruno. Where will your site make this request? Will it be coming from a Function or will the API call originate from client side javascript?

If it is coming from a Function, the IP address cannot be determined in advance. If the API call comes from client side javascript, the IP address will be the IP address of the end users browser.

If there are other questions, please let us know.