BGP Routes

Hey guys! Some time ago I came across a website that allowed you to enter an IP address and it would return the different ASNs used to get directly to the final AS. My problem is that I can't remember the website!

I am aware of sites like https://bgp.he.net where it lists (or maps) all peers, this is not what I am looking for.

Please excuse the very basic example. Let's say AS1 peers with AS2, AS4, AS5, AS8, AS9, AS22, and AS24; and had the blocks 1.1.1.1/24, 2.2.2.2/24 and 3.3.3.3/24. 1.1.1.1/24 is announced with AS2, AS4, AS8, and AS22. 2.2.2.2/24 is announced with AS4, AS5, AS9, and AS24. 3.3.3.3/24 is announced with AS4 and AS5.

If I was on this website I am searching for and entered the IP 3.3.3.37, it would return AS4 and AS5.

Does anyone have any idea what I am referring to? I've been Googling trying to find the site but the majority of what I find is documentation for different routers with the occasional looking glass.

TIA!