網域 ↔ IP 轉換器
支援正向解析（網域/主機名稱 → IP）與反向解析（IP → 網域/主機名稱）。
支援 IDN（Punycode）與 IPv6，並可對結果進行反向驗證。
網域（FQDN）/ IP 位址 / URL
- Safe
- The results are not stored or published anywhere.
說明
Explanation of the information available in this tool.
| Forward | Fetches the IP address for a domain/hostname. Commonly used when browsing the web. |
|---|---|
| Reverse | Fetches the domain/hostname corresponding to an IP address. If reverse DNS is not configured, it cannot be retrieved. |
How it works
It detects whether the input is a domain/hostname or an IP address, then automatically runs either forward or reverse lookup and shows the result.
It also performs the opposite conversion on the result so you can check both directions together.
Reverse lookup results depend on the configuration at the IP address, so forward and reverse results may not match.