Yeah, looping can definitely trigger carrier spam flags, so it’s possible the number’s reputation took a hit. I’ve seen this happen when call patterns look unnatural (repeated retries, short calls, etc.).
What usually fixes it is pausing traffic immediately, then checking the number’s reputation and adjusting the call logic (rate limiting + retry behavior) so it doesn’t trigger flags again. In some cases the number recovers, in others it’s better to rotate to a fresh one while fixing the root issue.
I’ve helped fix this for a few setups where deliverability dropped like this, so I can help you figure out exactly what happened and how to stabilize it quickly 👍