$ curl ifconfig.me 查詢較慢
[root@localhost ~]# curl ifconfig.me
14.23.92.186
$ curl icanhazip.com 查詢較快
$ curl ident.me 常用
$ curl ipecho.net/plain
[root@localhost ~]# curl ipecho.net/plain
14.23.92.186
$ curl whatismyip.akamai.com
[root@localhost ~]# curl whatismyip.akamai.com
14.23.92.186
$ curl tnx.nl/ip
[root@localhost ~]# curl tnx.nl/ip
14.23.92.186
$ curl myip.dnsomatic.com
[root@localhost ~]# curl myip.dnsomatic.com
14.23.92.186
$ curl ip.appspot.com
[root@localhost ~]# curl ip.appspot.com
curl: (7) couldn't connect to host
$ curl -s checkip.dyndns.org | sed 's/.*IP Address: [0−9\.]∗[0−9\.]∗.*/\1/g'
[root@localhost ~]# curl -s checkip.dyndns.org | sed 's/.*IP Address: [0−9\.]∗[0−9\.]∗.*/\1/g'
14.23.92.186