[RSS俱乐部] 你来自哪里？
这是一篇仅向RSS订阅者公开的「秘密」帖子。博主最近为博客添加了本地托管、注重隐私的访问统计功能，通过离线GeoIP服务大致了解访客来源地。虽然无法准确识别使用VPN、移动漫游或IP频繁变动的用户，但足以满足需求。
相关报道
A free tool that discovers potentially forgotten subdomains by querying public Certificate Transparency (CT) logs for issued SSL certificates. It provides live, uncached reports but may require repeated attempts for some domains due to overloaded CT registries.
A developer created ipaddress.to, a free website offering IP lookup tools including a browser extension, WhoIs lookups, DNS lookups with a short cache, and an IP address scoring system (0-100) to help filter bots. The site aims to provide simple, affordable network tools for developers.
A visual tool for exploring how SSL/TLS handshakes work, covering key exchange and certificate chain verification.
The page lists various IPv4 tools available on WorldIP.io, including IP Lookup, PTR (reverse DNS) Search, CIDR calculator, and ASN lookup, designed to help users analyze and manage IP address information.