Questions about residential IPs

[cesario678]

I have some doubts, I'm checking my residential IPs through the website http://ip-api.com/json, but when comparing with other websites like https://www.meuip.com.br and https://2ip.io/privacy, the ISP providers and locations change completely, even though it's the same IP. The question is, how can I be absolutely sure which site is correct? Which one should I rely on? Is there another one that is more accurate? Thank you.