.com vs .io
A frequent debate in the startup world. While .com provides universal recognition, .io has become the de facto choice for developer tools and SaaS products. The I/O computing association and shorter available names make .io attractive despite higher renewal costs.
Choose .com if you are building a consumer-facing brand with mainstream appeal. Choose .io if you target developers, run a SaaS product, or want a shorter domain name.
| 特徴 | .com | .io |
|---|---|---|
| 正式名称 | Commercial | British Indian Ocean Territory |
| 種別 | Generic | Country Code |
| レジストリ | VeriSign, Inc. | Internet Computer Bureau Ltd (ICB) |
| 登録ドメイン数 | 160,000,000 | 1,500,000 |
| 導入年 | 1985 | 1997 |
| DNSSEC | ✓ | ✓ |