Viewing profile — JulianHart
JulianHart
HN member- Joined
- Mon, Jan 19, 2026, 2:26 PM UTC
- HN karma
- 9
- Public activity
- 4 items
- HN profile
- View on Hacker News ↗
About JulianHart
Into mobile networks and how carrier routing actually works.
Recent public activity
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Comment #46872064
Interesting format, but skills feel like optimizing the wrong layer. The agents usually don't fail because of bad instructions — they fail because external systems treat them like …
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Comment #46696783
The CGNAT point is underrated. Carriers have zero incentive to move away from it - thousands of users per public IP, no transition cost. The interesting downstream effect is on IP …
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Comment #46679457
This would've been useful during the Iran shutdowns last week. Bluetooth mesh is one of the few things that keeps working when carriers go dark.
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Comment #46679384
That's a Cloudflare IP — 173.245.x.x is their range. You're seeing Cloudflare's edge servers, not actual visitor IPs. The multiple locations are just showing which Cloudflare POP h…