this post was submitted on 17 Mar 2026
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This Phishing email... What is the IP? (europe.pub)
submitted 6 days ago by RonSijm@programming.dev to c/programmer_humor@programming.dev
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[–] schuelermine@leminal.space 4 points 5 days ago

I was surprised to find that this doesn’t work at all.

For instance, 300 is considered a valid IP by e.g. Firefox, typing 300/ into Firefox will navigate to http://0.0.1.44/. I was expecting this to be interpreted as just Σ 256ⁿ × dₙ mod 256⁴. But it isn’t, Firefox won’t accept this (it performs a web search instead). Neither will curl (which tries to look up a domain by this name).