Open source · alpha 0.0.1
All the DNS. None of the rack.
espDNS turns a $20 ESP32 board into a full-featured DNS server: your own zones, secondaries from any primary, forwarders, a cache and blocklists. Two boards answer together, draw about a watt each, and keep answering when everything else on the network is having a bad day.
alpha 0.0.1 open source, no cloud, no subscription
Real DNS. Tiny boards. Always answering.
espDNS is a full-featured DNS server that runs on ESP32 boards. Host your own zones, copy zones from the primary you already have, forward the rest, block the junk, and run two nodes so there is always one answering. All of it for about a watt and the price of a takeaway.
Open source · alpha 0.0.1
A full DNS server.
On a one-watt board.
espDNS turns a $20–40 ESP32 board into the DNS server your network deserves. Primary zones. Secondary zones. Forwarders. Blocklists. A query log and live charts. Two boards answer together, so nobody waits when one is down.
- ~1 Wper node, around the clock
- $20–40per board, off the shelf
- 15 sfrom power-on to answering
- 2+nodes answering as one
- 5ESP32 chips: P4, S3, C3, C6, ESP32
- 200 q/ssteady load, the one these were measured at
- 1.4 msmedian answer
- 4.4 ms99th percentile answer
- 398kblocklist domains on the node
- 8.9 µsper query, to check them all
Performance measured on an ESP32-P4 node.