ip2domain: Convert IP address to domain name

Are you writing an v2ray setup script for others, but still asking noob users to prepare their own domain?

Are you running remote powershell, but got fucked by the TrustedHosts limitation?

Are you running a test-only https server, but acme.sh refuses to provide certificate for bare ip?

Convert your IP to a domain!

If your ip address is, then your domain is

If your ip address is, then your domain is or 13-80-82-152.ip.recolic.cc.

The domain name "$ipaddr.$prefix" always points to $ipaddr! You can get an available prefix list with this api: https://recolic.net/api/ip2domain-prefix.list.

I'll deploy a highly-available server only if there are already enough users.

Source Code / Self-hosting