{
  "code": 0,
  "msg": "success",
  "ret": {
    "pref": "177",
    "phone": "1770257",
    "province": "江苏",
    "city": "徐州",
    "isp": "电信",
    "post_code": "221000",
    "city_code": "0516",
    "area_code": "320300"
  },
  "timestamp": 1542865240
}
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{
  "code": 1,
  "msg": "错误信息",
  "timestamp": 1542096705
}
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