Update Need opinions

So Saturday as I'm sitting on the couch. I look over and I'm getting a call from none other than my ex husband. It had been ring a while before I answered it. Well I answered and said Hello and as soon as I did he hung up. Didn't even say a word.

I haven't heard from him since maybe spring and we have been divorced for a year now.

We don't have any kids.

Definitely not thinking it's a butt dial cause I know I'm not in his recently contacted.

Updated**

So I tried texting him yesterday to make sure everything was okay but I'm pretty sure I'm blocked cause when I text it didn't say sent or delivered.

Why do y'all think he called in the first place? And do y'all think he will try to reach out again?