# serverless-dns/serverless-dns

The RethinkDNS resolver that deploys to Cloudflare Workers, Deno Deploy, Fastly, and Fly.io

Repository: https://github.com/serverless-dns/serverless-dns
Canonical: https://ross.abutalabs.com/products/serverless-dns
Homepage: https://rethinkdns.com/configure
Language: JavaScript
License: MPL-2.0
License Family: copyleft
Topics: doh, dns-over-https, serverless, workers, adblock, pihole, cloudflare-workers, nodejs, deno, dns-over-tls, cloudflare, fastly, fastly-compute-at-edge, flyio
Last push: 2026-05-06T00:05:26+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 80, release rhythm 54, longevity 100
- inputs: {"age_days": 2002, "days_push": 120, "days_rel": 308, "gap_med": 18, "n_releases_24m": 4}
- flags: prerelease_only
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3794, forks 2293 (observed 2026-08-28T04:08:18.802641+00:00)

## What it is
A serverless, Pi-hole-style DNS-over-HTTPS and DNS-over-TLS resolver with configurable blocklists. It deploys to Cloudflare Workers, Deno Deploy, Fastly Compute@Edge, and Fly.io, and powers the RethinkDNS resolver in production.

## Use cases
- self-host a private DNS resolver on free serverless tiers
- block ads and trackers at the DNS level
- block malware and phishing domains network-wide
- set up DNS-over-HTTPS for my devices
- replace Pi-hole with a serverless alternative
- configure parental controls like blocking adult or gambling sites
- encrypt DNS queries so ISPs cannot see browsing activity

## When to choose
- you want a Pi-hole-like blocker without running your own hardware
- you need a fast, globally distributed DoH/DoT resolver on free tiers
- you want configurable blocklists with per-user endpoints

## When to avoid
- you need full local network control or detailed local logging like Pi-hole
- you need traditional port-53 plain DNS resolution
- you cannot use edge/serverless platforms

## Facets
- artifact type: service
- maturity: active
- function: networking, security, privacy, http-server, self-hosted
- domain: networking, privacy, security, self-hosted, web-development
- platform: cloud, serverless
- tags: dns-over-https, dns-over-tls, adblocking, cloudflare-workers, edge-compute, pihole-alternative, blocklists, nodejs, deno, web-server

## Member repositories
- serverless-dns/serverless-dns (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:18.802641+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:26:58.897521+00:00, confidence not recorded.
  - readme: https://github.com/serverless-dns/serverless-dns (fetched 2026-08-28T04:08:18.802641+00:00, sha dfee965f61a7)
  - homepage: https://rethinkdns.com/configure (fetched 2026-08-29T09:22:03.455131+00:00, sha 205c09b3a612)
  - site_page: https://docs.rethinkdns.com/ (fetched 2026-08-29T09:22:03.458413+00:00, sha 271779566180)
  - site_page: https://docs.rethinkdns.com (fetched 2026-08-29T09:22:03.460530+00:00, sha 271779566180)
  - site_page: https://rethinkdns.com/faq (fetched 2026-08-29T09:22:03.462611+00:00, sha 1fe2dea889dc)
- Data as of 2026-08-30T08:39:29.467469+00:00.