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1.

Clever hacker fits 537,000 domains in a $5 ESP32 ad-blocking dongle (news.ycombinator.com)

2026-07-19 | by Zak Killian | tags: esp32, pi-hole, dns filtering

2.

Clever hacker fits 537,000 domains in a tiny $5 ESP32 ad-blocking dongle — firmware uses only around 50KB of RAM and can answer blocked lookups in 10 milliseconds (tomshardware.com)

2026-07-19 | by Zak Killian | tags: esp32, pi-hole, dns filtering

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