Jagex rarely issue IP bans. you would only get flagged if you have encountered "Gold-farming major/RWT Major" bans and even then, its not often they take that extra step.
IP bans are very rare. If you get banned in-game, you can usually just make another account.
I was chain-banned on all of my accounts that I botted on for 24 hours in my history, however, I was not IP banned.
My friend was a big time RWT and account trader / recovery person. He got IP banned for RWT possibly, but I think it was the fact
he was recovering old accounts that weren't his for the good names.
Other than that, I have no experience with IP bans.
I've suicide botted on many accounts and lots of them got banned (individually and chain) but my 2 mains didn't. That happened way more than once so don't worry.. jagex rarely issues IP bans