NEW • DynDNS for the rest of us

Keep your home or lab reachable — even without a static IP.

hydyn (hidden + dynamic) gives you a memorable hostname that follows your changing IP. Lightweight clients, instant updates, and privacy‑first design — so your services stay online without exposing more than you need.

Reserve a hostname See how it works

quickstart.sh


# register your hostname
curl -X POST https://api.hydyn.io/v1/hosts \
  -H 'Authorization: Bearer <token>' \
  -d '{"name":"myhome","ttl":60}'

# update on IP change (systemd timer or cron)
HY_TOKEN=<token> HY_HOST=myhome \
  curl -s https://api.hydyn.io/v1/update

# check it
dig +short myhome.hydyn.io

Instant updates

Fast edge network propagates IP changes in seconds with sane TTLs and zero downtime.

Hidden by default

Minimal public data. Optional wildcard & proxy modes keep origin details out of sight.

Simple clients

One‑liner curl, native binaries, Docker, or router scripts. Works anywhere bash runs.

Secure tokens

Rotateable scoped tokens, per‑host permissions, and signed updates to prevent spoofing.

IPv4 & IPv6

Dual‑stack updates with per‑record control so you can prefer v6 or keep it v4‑only.

Open API

Clear REST API and webhooks so you can integrate hydyn into your homelab tooling.

💻 Linux 🍏 macOS 🪟 Windows 📦 Docker 🌐 OpenWrt 🛜 pfSense 🧰 UniFi 🛰️ MikroTik 🧩 API / Webhooks 💻 Linux 🍏 macOS 🪟 Windows 📦 Docker 🌐 OpenWrt 🛜 pfSense 🧰 UniFi 🛰️ MikroTik 🧩 API / Webhooks

Beta pricing

Kick the tires for free while we scale up the network.

$0 during beta

1 hostname • 60s TTL • Dual‑stack
CLI & API access • Email support

How hydyn works

Your device runs a tiny client that notices IP changes and calls our edge API. We then update your DNS records globally. Optional proxy mode can hide your origin behind our relay so your IP stays… well… hidden.

Will this work with CGNAT?

Yes, DNS updates still work. To reach services behind CGNAT you’ll want to pair hydyn with port‑forwarding, a reverse proxy, or a tunnel.

Do you support custom domains?

Planned. Bring‑your‑own‑domain with CNAME/ANAME is on the roadmap.