Check if the "url" exists in a list of websites

i wanna ask you about an issue i am having in the last days and couldn't find any automated way to help me yet... i got a list of website and i am going on them manually to check if my website is still connected to them or they have removed it. so what i am asking basically is: if there is any software / website that allows me to check a list of website and give me back an output of which of these website has the url / link / keyword i entered.

i don't want to make a backlinks list, but i want to check a list of websites that i had/have backlinks on them and see which ones are still active.

thanks in advance,

Dan.