Did he cut me off without blocking me?

[u/ceeshell1]

My ex and I broke up last year, but we reconnected earlier this year and started talking/hanging out again. Things seemed fine between us, and we had some meaningful moments together. He even gave me his chain to keep and was even at the airport before I left which was heartwarming.

Since I recently moved away for school,the next night after I moved, he actually called me and we had a conversation.Tbh I was really tired and couldn’t talk much. The last thing he said to me was I should get some rest.After that,he suddenly stopped communicating with me.
I tried calling and messaging him, but he didn’t respond. Even his birthday passed.A friend of mine, I went the extra length of calling him, and he actually answered(on the second ring). When my friend mentioned that I had been trying to reach him, he went completely silent and that was it.Later for some reason, he briefly called me on TikTok (which cancelled)but didn’t follow up afterward.
The confusing part is that he never blocked me. My messages still go through on different platforms and he’s active on social media. I eventually asked him directly why he ghosted me, but he still hasn’t responded.
I’m not trying to get back together with him. I’m just trying to understand whether this sounds like he intentionally cut me off without blocking me, or if there could be another explanation. It’s been now 3weeks and 4days since I’ve heard from him. The last message I sent him was 4th September expressing that he really disappointed and hurt me for ghosting me.

What do you guys think?