Load and performance testing
Driving traffic at infrastructure you own, from a controlled egress, at a volume no consumer connection could produce. The target is yours, so the registry entry is nobody's business but your own.
DATACENTER PROXIES
Datacenter Proxies
Addresses that belong to a hosting company, on hardware built for throughput. They are the quickest and least expensive proxies on the market, and any target that looks up the network behind an IP can tell exactly what it is talking to. We do not sell them yet.
This page explains the product category. ProxyJam's catalogue sells static addresses registered to consumer internet providers, which is a different thing on the one axis that decides most jobs.
A datacenter proxy is an IP address that belongs to a hosting company rather than to a consumer internet provider. It lives in a data centre, it is fast, it is the cheapest address you can buy, and the public registry says exactly what it is. That last part is the whole story. Any site that cares who is connecting can look up the owner of an address in seconds, and a hosting range is trivially identified and frequently refused outright. For work where nobody is checking, that costs you nothing and a datacenter address is the correct cheap answer: internal testing, your own infrastructure, public data served to anyone who asks. For work where an empty response is indistinguishable from a real one, it costs you the whole run. ProxyJam does not sell datacenter proxies today. The addresses we do sell are registered to named consumer carriers, 22 of them in the United States.
WHERE THE ADDRESS COMES FROM
Why a datacenter address is legible
Nothing here is hidden or subtle. The economics and the weakness both follow from one fact about how the address is registered.
Step 01
A hosting company owns a block of addresses. It buys them, registers them to itself and announces them from its own network. The registry entry naming that company is public, permanent and free for anyone to read.
Step 02
Those addresses are cheap to operate at scale. One rack answers for thousands of them, the bandwidth is already paid for, and nothing depends on a household router staying plugged in. That is the whole reason a datacenter address costs a fraction of any other kind.
Step 03
Any target can do the lookup you can. A site that cares who is asking checks which network announced the address and reads back the hosting company’s name. Nothing about the request is disguised — the honesty of the record is the product’s defining property, useful in some jobs and fatal in others.
Step 01
A hosting company owns a block of addresses. It buys them, registers them to itself and announces them from its own network. The registry entry naming that company is public, permanent and free for anyone to read.
Step 02
Those addresses are cheap to operate at scale. One rack answers for thousands of them, the bandwidth is already paid for, and nothing depends on a household router staying plugged in. That is the whole reason a datacenter address costs a fraction of any other kind.
Step 03
Any target can do the lookup you can. A site that cares who is asking checks which network announced the address and reads back the hosting company’s name. Nothing about the request is disguised — the honesty of the record is the product’s defining property, useful in some jobs and fatal in others.
COST AND ENVELOPE
What each kind of address costs and what it can do
| Shared datacenter | Dedicated datacenter | Static ISP | |
|---|---|---|---|
| Who else uses it | Several customers at once | You alone | You alone |
| Relative cost per address | Lowest of any category | Low | Highest of the three |
| Throughput ceiling | Shared, so variable | The port's, effectively | The port's, effectively |
| Reputation you inherit | Whatever your neighbours did | Your own, from day one | Your own, from day one |
| What a network lookup returns | A hosting company | A hosting company | A consumer internet provider |
| Where it stops working | Consumer-facing targets | Consumer-facing targets | Targets that block hosting ranges |
WHAT IT IS FOR
Work where nobody is checking the network
APIs that authenticate you properly
When access is decided by a key or a signed request, the network behind the address is irrelevant. Paying residential prices to reach an endpoint that already knows who you are is money spent on nothing.
Fixed egress for allow-listed access
A partner or an internal service that admits a named address does not care where that address lives. It cares that the address does not change, and a dedicated datacenter block is the cheapest way to promise that.
High-volume internal jobs
Mirroring, backups, asset fetching and anything else that moves a great deal of data between systems you control. Bandwidth here is a line item, and this is the category where it is smallest.
Uptime and reachability monitoring
Checking that your own endpoints answer from outside your network. What you need is a vantage point and a stable one, not a disguise.
Development and staging egress
Routing a build agent or a test suite through a known address so firewall rules can be written once. Cheap, predictable, and no part of the job depends on looking like a person.
THE TRADE
What a datacenter address gives you and what it cannot
Gives: speed and price
Server-grade hardware on paid-for transit, with no consumer device in the path. Nothing else in this market is faster per pound, and for work that does not care who is asking, that is the entire decision.
Cannot give: an ordinary-looking network
The block is registered to a hosting company and announced from its network, and both facts are public. A target that treats hosting ranges as automated traffic is not guessing — it is reading a record you cannot edit.
The middle option
An address hosted on the same class of hardware but registered to a consumer internet provider keeps most of the speed and changes what the lookup returns. That is the product ProxyJam actually sells.
CATEGORY DETAILS
How the category behaves
-
Address origin
- Owned by and registered to a hosting company
-
Network shown to the target
- The hosting provider's, and it is public record
Rotation- Usually none; the address is assigned for the term
-
Latency
- The lowest of the categories — nothing consumer-grade in the path
-
Throughput
- Effectively the port's, subject to the provider's own limits
Targeting axis- The data centre's location, not a subscriber's
Billing unit- Per address, per period, in every serious offer
-
Availability at ProxyJam
- Not on sale — the catalogue sells static ISP addresses only
FAQ
Questions about datacenter proxies
This is a category explainer, not an offer. Where an answer states a term of sale it describes the static ISP product, which is what ProxyJam sells, and links to the document that binds us.
What is a datacenter proxy?
It is an IP address that belongs to a hosting company rather than to a home or mobile subscriber, served from that company's own network and hardware. You rent the address for a period, it does not move, and requests leaving through it reach the target at server speed. Everything good and everything limiting about the category follows from the ownership: the record naming the hosting company is public and cannot be changed by the person renting the address.
Why are they so much cheaper than other proxies?
Because nothing in the supply chain is scarce or awkward. The provider already owns the addresses, already owns the racks, already pays for the transit, and adding one more address to a block costs almost nothing. Consumer addresses have to be sourced one household at a time, and that difference is what you see on the invoice.
Will a website know it is a proxy?
A website that checks will know it is a hosting network, which for most consumer-facing sites amounts to the same conclusion. The lookup is trivial: read which network announced the address, compare it against a published list of hosting providers, done. Nobody needs a clever detection system for this, which is why claims that a particular datacenter range is undetectable do not survive contact with a real target.
What is the difference between shared and dedicated?
Whether anyone else is using the address at the same time. Shared is cheaper and you inherit whatever reputation your neighbours have already built on that address, which you cannot see and cannot undo. Dedicated costs more and the only history on the address is yours. For anything where a block would cost you real time, the difference is not a luxury.
When is a datacenter proxy the right choice?
When the target does not care who is asking, or already knows. Testing your own systems, reaching an API that authenticates with a key, moving data between services you control, holding a fixed egress address for a firewall rule. In all of those the network registration is irrelevant and you would be paying a large premium for nothing by buying anything else.
When is it the wrong choice?
Anywhere a consumer-facing site decides what to show based on who appears to be asking. Retail, streaming, social platforms, ticketing, advertising — all of them treat hosting ranges differently from household ones, and no amount of care in how you send the request changes what the registry says about the address it came from.
What does ProxyJam sell instead?
An address hosted on the same class of server infrastructure but registered to a named consumer internet provider, so a lookup returns a broadband company rather than a hosting company. It is priced per IP per period rather than per gigabyte, held for the whole period, replaced free up to 20 % of the order per calendar month, and the first order carries a 72-hour refund covering up to 10 IPs that using the proxies does not void. ISP Proxies