[clever@amd-nixos:~/nix]$ nmap infinisil.io -6

Starting Nmap 7.40 ( https://nmap.org ) at 2017-07-08 17:26 ADT
Nmap scan report for infinisil.io (2a03:b0c0:3:d0::47dc:3001)
Host is up (0.13s latency).
Other addresses for infinisil.io (not scanned): 207.154.251.58
Not shown: 995 filtered ports
PORT     STATE  SERVICE
22/tcp   open   ssh
53/tcp   closed domain
80/tcp   open   http
443/tcp  open   https
2022/tcp closed down

Nmap done: 1 IP address (1 host up) scanned in 10.27 seconds

[clever@amd-nixos:~/nix]$ nmap infinisil.io -4

Starting Nmap 7.40 ( https://nmap.org ) at 2017-07-08 17:26 ADT
Nmap scan report for infinisil.io (207.154.251.58)
Host is up (0.14s latency).
Other addresses for infinisil.io (not scanned): 2a03:b0c0:3:d0::47dc:3001
Not shown: 995 filtered ports
PORT     STATE  SERVICE
22/tcp   open   ssh
53/tcp   closed domain
80/tcp   open   http
443/tcp  open   https
2022/tcp closed down

Nmap done: 1 IP address (1 host up) scanned in 10.10 seconds