Datacenter proxy

A datacenter proxy exits from an address owned by a hosting provider or cloud platform. These are the fastest and cheapest proxies available, and the easiest for a destination to recognise.

#Why they are easy to spot

Address ranges are registered to their owning organisation and published. Anyone can look up the ASN behind an address and see that it belongs to a hosting company. Many filtering services maintain lists of hosting ranges and treat traffic from them with immediate suspicion.

#Where they work well

• Targets that do not check the network origin at all.
• High-volume work where speed matters more than disguise.
• Internal testing, monitoring and availability checks.
• Any task where being identified as automated is acceptable.

#Shared and dedicated

A shared datacenter proxy is used by several customers at once, so its reputation depends on strangers. A dedicated one is yours alone, costs more, and behaves predictably.

#Commonly confused with

ISP proxies are also hosted in datacentres, but their addresses are registered to consumer ISPs, which changes how they are classified.

#Why the network gives it away

Address ranges are allocated to organisations and recorded publicly. A range belonging to a hosting company is identifiable from that record alone, before any traffic is examined. This is why a datacenter address is classified before it does anything.

Two consequences follow. Rotating between datacenter addresses does not help if the whole range is classified, because the replacement carries the same registration. And a well-behaved request from a datacenter address can still be refused, since the decision was made on the network, not on the behaviour.

#Where they remain the right choice

• APIs that authenticate you. If the service knows who you are, the network matters less.
• Targets with no bot defence. Paying residential rates buys nothing here.
• Bulk transfer where throughput dominates. The path is short and predictable.
• Internal testing against systems you control.

#Checking a range before you buy

# Which organisation holds this address?
whois 203.0.113.10 | grep -iE 'orgname|netname|descr'

A hosting company in that field means the address will be treated as datacenter, whatever the seller calls it. See ASN for how the classification is built.