Why Carrier Routing Matters Just As Much, If Not More, Than Location for a China-Facing Server

It’s a natural assumption: the closer a server is to your users, the faster it’ll perform for them. For most hosting decisions, that’s a reasonable rule of thumb. For a China-facing service specifically, it’s often wrong, or at least incomplete enough to lead to a worse decision than if you’d ignored raw distance entirely and focused on carrier routing instead.

Why distance isn’t the right variable here

The internet routes traffic based on the specific path of networks and peering agreements between them, not the physical distance a signal has to travel.

A server in Hong Kong, geographically close to mainland China, can still have a slow, congested connection to Chinese users if the network path between Hong Kong and the relevant Chinese carrier isn’t well optimized. Meanwhile, a server in Tokyo, considerably farther away in kilometers, can outperform that closer Hong Kong server if Tokyo’s network has a direct, well-optimized route into the same Chinese carrier’s backbone.

Distance sets a physical floor on latency, but for most real-world cases, the network path adds far more delay than the raw distance does, which is exactly why carrier routing ends up mattering just as much, if not more, than location in practice.

What actually determines the network path

China’s internet infrastructure is split across three major carriers, China Telecom, China Unicom, and China Mobile, each operating largely separate networks with their own international gateways and peering arrangements. Whether a given server has a good connection to Chinese users depends on whether that server’s network has a direct, optimized relationship with the specific carrier those users are on, not simply on how many kilometers separate the two locations.

A server with strong upstream relationships to all three major carriers will generally outperform a geographically closer server that only has standard, unoptimized transit, regardless of the raw distance involved.

A concrete example

Take two hypothetical servers: one in Hong Kong with only standard international transit, and one in Tokyo with direct upstream relationships to China Telecom, China Unicom, and China Mobile, plus peering at major regional exchanges.

Despite Hong Kong’s proximity advantage on a map, the Tokyo server’s traffic to a China Telecom user could easily show fewer hops and lower, more consistent latency than the Hong Kong server’s, simply because the network path is better engineered, even though the physical distance is considerably longer.

This isn’t a hypothetical edge case, it’s a pattern that shows up consistently enough that experienced infrastructure teams evaluate routing quality before location whenever China-facing performance actually matters.

Where location still matters

This doesn’t mean location is irrelevant, just that it’s not the primary variable for China-facing traffic specifically. Location still affects latency to non-China audiences in the broader region, matters for jurisdiction and regulatory considerations (a Singapore-based server sits outside mainland Chinese legal jurisdiction, for instance, which matters for some businesses independent of network performance), and affects the baseline physical floor on latency once carrier routing is equally good between two options.

If you’re choosing between two providers with genuinely comparable routing quality, location becomes the relevant tiebreaker. It’s only not the primary decision factor when routing quality varies significantly between the options, which, in this space, it usually does.

How to evaluate a provider on the metric that actually matters

Ask which specific carrier routes are supported, by name, CTGNet (CN2 GIA) for China Telecom, CUP for China Unicom, CMIN2 for China Mobile, rather than accepting a vague “optimized for China” claim without detail.

Check which carriers the provider’s network has direct upstream relationships with, not just which exchanges it peers at generally, since direct upstream relationships to Chinese carriers specifically are what actually shortens the path.

Run your own traceroute test from or to a Chinese IP address rather than relying on a provider’s marketing claims, and compare the hop count and consistency against what you’d expect from a genuinely optimized route.

Test at multiple times of day, since peak-hour congestion reveals whether a route is genuinely well-provisioned or only performs well under light demand.

Wrapping up

For a China-facing service, evaluating providers primarily by physical proximity to China is a reasonable-sounding instinct that leads to worse decisions than evaluating by carrier routing quality directly. The question that actually predicts performance isn’t “how close is this server to China,” it’s “does this server’s network have a direct, optimized relationship with the specific Chinese carrier my users are on.” Once you’re comparing providers with genuinely similar routing quality, location becomes a sensible tiebreaker, but it shouldn’t be the first filter.

Want to see how routing quality compares to raw distance for yourself? V.PS’s Performance KVM VPS in Singapore and Tokyo Gen 2 includes CTGNet, CUP, and CMIN2 routing by default, and Tokyo runs on AS3258 with direct upstream relationships to all three major Chinese carriers.

Frequently asked questions about routing versus location for China-facing hosting

Isn’t a server physically closer to China always going to have lower latency?

Not necessarily. Network routing quality, specifically whether a server’s network has a direct, optimized path into a Chinese carrier’s backbone, tends to matter just as much, if not more, than raw physical distance for China-facing traffic.

Does this mean location doesn’t matter at all?

No, location still matters for jurisdiction considerations, for latency to non-China regional audiences, and as a tiebreaker once you’re comparing providers with genuinely comparable routing quality.

How do I know if a provider’s network actually has good carrier routing?

Ask which specific Chinese carrier routes are supported by name, and verify independently with a traceroute from or to a Chinese IP address rather than relying solely on marketing claims.

Why does China have three separate carriers that each need separate optimization?

China Telecom, China Unicom, and China Mobile operate largely separate physical networks with their own international gateways, so an optimized route built for one doesn’t automatically carry the same benefit to users on a different carrier’s network.

Can a server far from China ever outperform one that’s closer?

Yes, this is common. A well-routed server with direct upstream carrier relationships can outperform a geographically closer server that only has standard, unoptimized international transit.

Should I ignore location entirely when choosing a China-facing hosting provider?

Not entirely, but it shouldn’t be your first filter. Evaluate carrier routing quality first, then use location as a tiebreaker among providers with comparable routing, or as a factor for jurisdiction and non-China regional latency needs.