Aizhan.com positions this page under **Domain/IP Lookup** as an **IP reverse domain lookup** and **same-IP website lookup** tool. It is intended for webmaster SEO and filing-related queries, alongside tools such as SEO comprehensive analysis, website weight, indexing, keyword ranking, friendly links, ICP filing lookup, Whois lookup, and backlink analysis.

The source page shows that users can enter an IP address to check the region and how many domains resolve to that IP. It also lists related Aizhan tools including ICP filing lookup, Whois lookup, expired old domains, expired domain backordering, fixed-price old domains, short link generation, and domain blocking detection.

The source material does not indicate self-hosted deployment. Usage is primarily through the Aizhan web page or its **API interface**, described as “billion-level data support” for more convenient data mining. Users in China may also need to consider ICP filing, APP/miniprogram filing, and WeChat/QQ domain blocking detection tools provided by Aizhan.