How Big Is the IP Pool Behind a 5G Proxy?

Pool size is the number proxy sellers like to print in large type, and it is the number that tells you least. A dedicated 5G line from 5G Proxies USA is one SIM in one modem on one carrier in one US city, and the addresses it can show are whatever that carrier's regional gateway hands out when the modem reconnects. That is a real pool, with a real size, and it behaves in ways that matter for your work. This article explains where the addresses come from, how rotation draws on them, why you will sometimes see a repeat, and how to think about sticky and rotating use on the same line.

Where the addresses come from

A mobile modem does not own a public address. When it attaches to the network it gets a private address on the carrier's side, and its traffic reaches the internet through a gateway that maps it to a public address from a block the carrier assigns to that region. T-Mobile, Verizon and AT&T each operate a handful of these gateways per part of the country, and each gateway has its own set of public blocks. Every phone in the area that attaches through the same gateway draws from the same set.

So the pool behind your line is the carrier's regional pool for that gateway. It is not something we built, not something we can enlarge, and not something any other provider on the same carrier in the same city has a different version of. A seller claiming a private pool of mobile addresses is either describing something that is not a carrier line or describing this exact arrangement in grander words.

Rotation on demand draws a new address

When you rotate a line, the modem drops its data session and establishes a new one. The gateway assigns a public mapping again, and most of the time it is a different address from the pool. You trigger that from the rotation link on the line page, from the API, on a timer you set in the dashboard, or by hand. There is no wait between rotations imposed by us; the practical limit is the time the modem takes to reattach, which is a matter of seconds on a healthy cell.

What you cannot do is choose the address. The gateway decides, and it decides from the same set every time. That is the trade for using a real carrier: you get the carrier's addresses, allocated the carrier's way.

Why you will see repeats

Because the pool is finite and the gateway allocates from it with its own logic, a line that rotates many times in a day will eventually land on an address it has used before. That is not a fault and it is not a sign the pool is tiny. Carrier gateways tend to reuse mappings that were recently released, and a modem reattaching quickly can get its previous address back. If a job needs every request to come from a distinct address, build the retry into the job: check the address after rotation and rotate again if it matches the last one.

The number of distinct addresses a single line sees in a day is honestly variable. It depends on the carrier, the gateway, how busy the pool is and how often you rotate. We do not print a figure for it because any figure would be true on one gateway and false on the next.

Sticky versus rotating on the same line

Every line supports both modes, and you choose by how you use the rotation controls. Leave the line alone and the address is sticky for as long as the carrier keeps the data session alive, which is typically long enough for a full work session and often much longer. Call the rotation link and you get a fresh address on demand. Set a timer and the line rotates on a schedule. The same line can be sticky in the morning for account work and rotating in the afternoon for a crawl; nothing about the plan changes.

Pick sticky for anything that should look like one person: logins, profiles, checkout flows. Pick rotating for work that benefits from spreading requests across addresses: scraping, monitoring, verification sweeps. Run them on separate lines if the two jobs should never share an address.

Why pool size claims are mostly marketing

A provider quoting millions of mobile addresses is usually adding up every address it has ever observed across every device in a peer-to-peer network, most of which are not available at any given moment and none of which are dedicated to you. A provider quoting a pool for a dedicated line is quoting the carrier's regional pool, which it shares with every subscriber in the region. Either way, the big number does not describe what your job will see.

What your job will see is: one carrier, one city, one gateway's set of addresses, drawn on demand, with occasional repeats. For almost every real workload that is more than enough, because the point of a carrier address is that it is shared with real people, not that it is unique. A larger pool would not make the address more trusted; it would just be a larger number on a sales page.

What 5G adds to the picture

Nothing about the pool. A 5G modem and an LTE modem on the same carrier in the same city attach through the same gateways and draw from the same blocks. 5G changes how fast the line moves data and how quickly it answers, which matters when you rotate often, because the reattach is quicker and the first requests after it settle faster. If your rotating workload is heavy, that is the reason to pay $7 a day for 5G instead of $6 for 4G LTE.

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