@ayesh/geo-ip-database/data/39.json

Weekly updated database of IP CIDR to Country codes, indexed by the first 1/4th of the IP address

{
    "0": "CN",
    "256": "AU",
    "512": "CN",
    "65536": "TW",
    "131072": "JP",
    "262144": "KR",
    "524288": "TW",
    "1048576": "KR",
    "2097152": "PK",
    "4194304": "CN",
    "7143424": "HK",
    "7176192": "SG",
    "7208960": "JP",
    "7340032": "KR",
    "8388608": "CN",
    "8555364": "AU",
    "8555368": "CN",
    "12582912": "ID"
}