Does anyone else have a mysterious UID appear in their ADB? (-253)

I input the command adb shell dumpsys netstats detail and found "-253". The "-253" doesn't have any package name, and this is the only mention of "-253" I could find in the ADB. It's been using data which is annoying because I have a very limited plan, and I can't figure out what it is (Aside from "f2fs gc-253" which shares the "-253" but I believe it to be unrelated) If anyone has an android of any model, with the latest updates + security patches, could you see whether it appears on your mobile? I'm trying to work out if this is a localized issue or if others have the same (If you don't want to bother with ADB, you can just use a specific data monitoring application, this is the only one able to capture the Unknown) "https://play.google.com/store/apps/details?id=com.roysolberg.android.datacounter&hl=en_US " it should be "Unknown (uid-253)" under yearly usage but it's not essential Thanks