Geo & network routing
Why m-cdn decides per region and per carrier (ASN) instead of one global winner.
What it is
Delivery quality is intensely local. The best CDN in Frankfurt may be the worst in São Paulo, and within one city the best CDN on fibre can be poor on a specific mobile carrier. Geo & network routing means scoring and deciding at the granularity those differences actually live at.
ASN — the network dimension
An ASN (Autonomous System Number) identifies the network — an ISP or mobile carrier — a viewer connects through. m-cdn uses it to spot a CDN that is healthy overall but bad on one carrier's peering, and to route around it for just that network rather than penalising the CDN everywhere.
How m-cdn uses it
The Decision Engine scores per (region × network) and the geo map visualises the result: bubbles sized by viewer count, coloured by the dominant CDN, drillable world → country → region and breakable down by network. EDNS Client Subnet adds early, pre-first-byte visibility into where demand is forming — placement and demand only, never quality.
Standards & references
- EDNS Client Subnet — RFC 7871
- ADR-132 — region × network decision matrix