Path: `/my-ip/address-only/in-text-format`:
show ip address only in text format, perfect when you need public address only.
curl -s https://www.ip123456789.com/my-ip/address-only/in-text-format
# returns text response like: `a.b.c.d`
Path: `/my-ip/address-only/in-json-format`:
show ip address only in json format, perfect when you need json format in program.
curl -s https://www.ip123456789.com/my-ip/address-only/in-json-format
# returns json response like: `{"ip": "a.b.c.d"}`