I've received a very weird message with no number in my iPhone?

Early in the morning at 6AM I have received a weird message only codes in it. I tried to check the number but it only said "Message". I don't think it's from my Cellular Service. Anyone experienced this?

I think it was a message that wasn't encoded before it went into your iPhone. Text messages appear in a different format before being decoded.

Is there a way for me to decode the message? And by the way, I tried calling it and I don't hear a thing at all, but it gave me a number: 637 7243.

Here's the message too:
00480065006C006C006F0020006B00750079006…

Anyone can help me decode it?

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