be-a.dev

Free subdomains for developers.

Persistent *.be-a.dev subdomains for your websites, bots, and APIs. Maintained via GitOps in a public GitHub repository, backed by authoritative CoreDNS edge nodes.

.be-a.dev

How it works

Each subdomain is defined by a single JSON file under domains/be-a.dev/<letter>/<name>.json. Submit a Pull Request with your configuration. When merged, CI validates your records and syncs changes globally within seconds.

domains/be-a.dev/a/alex.json
{
  "owner": {
    "username": "alex"
  },
  "records": {
    "CNAME": "alex.github.io."
  }
}

Supported records

CNAME Point to GitHub Pages, Vercel, Fly.io, Cloudflare, etc. (must end with a dot).
A Direct IPv4 addresses of your server or VPS.
AAAA IPv6 addresses for modern dual-stack routing.
TXT Verification tokens, ACME challenges, or SPF records.
NS Delegate DNS management of your subdomain to external nameservers.

Nameservers

Authoritative CoreDNS 1.12 edge nodes deployed across European data centers:

ns1.be-a.dev 130.78.191.155 Netherlands (NL)
ns2.be-a.dev 191.44.118.80 Germany (DE)
ns3.be-a.dev 222.167.248.169 Poland (PL)