IP Address Detection

Comments discuss how websites and apps detect users' IP addresses, often questioning the use of external services like ipify when the IP is already available from connections, along with privacy concerns about IP logging and leaks.

📉 Falling 0.4x Security
5,503
Comments
20
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5
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#1019
Topic ID

Activity Over Time

2007
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Keywords

HAVE FFFD DNS HN LAX VPN IP api.com dropbox.com POP ip ip addresses addresses ip address ips address cloudflare whois connecting visitor

Sample Comments

looperhacks Nov 27, 2021 View on HN

Well, checking your own IP isn't exactly its primary use case

MichaelGG Feb 19, 2014 View on HN

They don't take IP addresses into consideration?

RandomBacon Oct 1, 2020 View on HN

That's just based off of IP...

viraptor Feb 3, 2018 View on HN

Why ipify though? I connected to you. You already have my IP.

pitaj Oct 22, 2019 View on HN

It's probably just using your IP address.

Fri21Sep Sep 27, 2018 View on HN

"No worries we hashed IP adresses"

markus_zhang Jul 14, 2025 View on HN

I suspect HN is already checking IP.

87 Jun 30, 2018 View on HN

An IP is pretty useless nowadays with so many sites behind cloudflare.

trevithick Sep 18, 2025 View on HN

Why blur what's almost guaranteed to be RFC1918 private network info? My IP is 192.168.1.56, come and get me hackers.

amelius Oct 31, 2025 View on HN

Do they also have this for IP addresses?