Can anyone confirm that the domain found in my logs today indicate a WiFi call initiated: “ss.epdg.epc.mnc260.mcc310.pub.3gppnetwork.org”

Hey everyone. I’m trying to find out if this was indeed WiFi calls going out through the night last night. From what I’ve found, it’s definitely WiFi calls. It’s from T-Mobile using an iPhone 15. I know someone here might have a tool that can actually confirm it for me. Trying to find out if my son was up calling people last night using WiFi and maybe airplane mode combined or something. With it being iPhone and on T-Mobile, no luck looking into bill since WiFi calls and texts and iMessages and RCS don’t show on the bill cause they’re not SMS.

Anyways, any help would be awesome. I do not have it set so that each device on NextDNS is listed separate. But it’s all TVs and 2 cell phones so it’s pretty easy to distinguish the devices in the logs for me.