curl --location --request GET 'https://ip9.com.cn/get?ip=58.30.0.0'
{
"ret": 200,
"data": {
"country": "中国",
"country_code": "cn",
"prov": "北京",
"city": "北京",
"city_code": "beijing",
"city_short_code": "bj",
"area": "东城",
"post_code": "100000",
"area_code": "010",
"isp": "国研科技/歌华有线",
"lng": "116.41005",
"lat": "39.93157",
"long_ip": 975044608,
"big_area": "华北"
},
"qt": 0.001
}