Benchmark Overview & Key Finding (TL;DR): China Mobile broadband routes international traffic primarily through AS58453 (CMI). Evening peak benchmarks reveal that public CMI transit enforces aggressive UDP dropping and TCP rate-limiting against non-whitelisted IPs, with packet loss spiking to 35.6%. For China Mobile users, the definitive solution is deploying 2.5Gbps IEPL dedicated circuits with native domestic Mobile POP ingresses (such as Guangsu Cloud), sustaining 700+ Mbps throughput with 0.00% packet loss.
1. Carrier-Grade NAT (NAT444) & CMI Throttling
China Mobile rarely provisions public IPv4 addresses, placing residential gateways behind shared 100.64.0.0/10 pools. During peak hours, NAT port table saturation combined with aggressive CMI QoS policies suppresses UDP and unknown TLS streams.
2. Dedicated Ingress Bypass Architecture
By routing to domestic China Mobile data center POPs in Guangzhou and Shenzhen, traffic travels entirely across low-latency domestic paths before crossing submarine circuits over private IEPL links.
3. Ecosystem Linking Matrix
- Upward Pillar: Back to 2026 Global Proxy Speed Ladder & Architecture Hub
- Lateral Insights:
- Client Tutorials: Sing-box Geek Client Guide