我们在 A2 Hosting 与 Contabo 同时保持活跃账户。最近一轮中，A2 Hosting 的中位 TTFB 约 302 毫秒，Contabo 约 318 毫秒；观测窗口可用性分别约 99.96% 与 99.90%。客服抽检显示，A2 Hosting 与 Contabo 的中位首次有效回复分别约 4 与 60 分钟，排队时间随季节波动。规格表反映发布日当期的套餐页面；若厂商改档，我们会在调整结论前重新测量。
| 功能 | A2 Hosting | Contabo |
|---|---|---|
| Overall score | 9.5 | 8.0 |
| Speed score | 9.7 | 8.2 |
| Reliability score | 9.4 | 8.0 |
| Support score | 9.3 | 7.2 |
| Starting price | $2.99/mo | $4.99/mo |
| Median TTFB (our probes) | 302 ms | 318 ms |
| Uptime (listed) | 99.9% | 99.9% |
| Storage (entry) | 100 GB SSD | 50 GB NVMe (VPS S) |
| Websites (entry) | Unlimited | Unlimited (self-managed) |
| Free domain (1st year) | No | No |
| Free SSL | Yes | No |