Thanks for this caution / opsec.
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Public WhoIS registrant:
Chris [redacted]
The Dosyago Corporation
Beaverton, Oregon
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OP has ~2 year old /hn/ account, with ~11k karma
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I have made no further investigations, but obviously haven't installed this myself (as I have an IRL pager that solves similar issues to OP's).
There's also an operator manual if you're looking for more info: https://www.udp7777.com/usage.html