AT&T Illinois Proxies

An AT&T line from Illinois Proxies is one AT&T SIM card in one modem, router or phone in our Chicago rack, assigned to one account for the time paid. Nothing about it is shared or emulated: the traffic leaves on AT&T's own radio network and carries an address from AT&T's regional pool. This page explains what a website observes from such a line, why that observation reads as Illinois rather than as a narrower point on the map, what 4G and 5G mean on our hardware, how rotation works, which customers choose AT&T, and how to check availability before you order.

What a website observes from an AT&T line

Every connection carries a source address. For an AT&T line that address sits in a block registered to AT&T Mobility, autonomous system 20057, and any lookup service that classifies networks will label it as a mobile carrier rather than a hosting provider or a business ISP. The site also sees the usual signs of a cellular subscriber: an address that is shared with other AT&T customers behind carrier-grade NAT, a path that enters the internet at one of AT&T's regional gateways, and an address that changes from time to time without anyone asking for it.

Those three signs together are the point. A site that treats datacenter ranges with suspicion has no such rule for AT&T Mobility, because that block is where its ordinary customers come from. The address is not unique to you, which is what makes it ordinary, and the line behind it is yours alone, which is what makes it predictable.

Why the address reads as Illinois

AT&T assigns mobile addresses from pools attached to its regional gateways, and the gateway that serves our rack is the one that serves the Chicago area and much of northern Illinois. Geolocation databases place those pools at Chicago or at the state level, and a check that asks whether a visitor is in Illinois gets a yes. A check that asks for a street address gets nothing, because a mobile address has none.

That is the right scope for state-level work. A business registered in Illinois, a buyer checking what an Illinois customer is shown, or a marketer verifying a campaign that targets the state all need the state to match; a district or a ZIP code is rarely part of the test. Customers in Springfield, Naperville, Aurora, Peoria, Rockford and Champaign reach the Chicago rack like anyone else, and the address they present reads as Chicago, Illinois. We do not run hardware in those cities and do not claim local addresses there.

4G and 5G AT&T hardware in our rack

The rack holds two kinds of AT&T device. The 4G tier uses LTE modems and routers, and a line on that tier typically moves 20 to 45 Mbps, which is more than most browser and account work ever uses. The 5G tier uses newer modems and Android phones with 5G radios, and a line there typically moves 50 Mbps or more, with lower latency, which matters for media uploads, large page loads and anything that keeps many connections open at once.

Both tiers accept HTTP, HTTPS and SOCKS5 connections, including UDP over SOCKS5. Both are priced flat: 4G at $5 a day, $28 a week or $65 a month, 5G at $6 a day, $31 a week or $75 a month, and either can be tried for $2 or $3 for two hours. Data is not metered on either tier, subject to the fair use rule in the terms.

Rotation on an AT&T line

Left alone, the address stays as long as AT&T keeps the data session up, which is often many hours and sometimes a day or more. When you want a new one, you can rotate from the dashboard, call the rotation link for the line, use the API, or set a timer that rotates at a fixed interval. Rotation re-registers the modem on the network and AT&T hands out a fresh address from the pool. The new address may be one you have held before, because the pool is finite and shared; that is normal for every carrier line and is not a fault.

A practical pattern: keep the address sticky for a session of account work, rotate between sessions, and use the timer only for jobs that genuinely need a different address every few minutes.

Who chooses AT&T

AT&T is the choice of customers who want the most widely recognised consumer carrier in Illinois and a stable address for long sessions. Agencies verifying ads shown to Illinois audiences, retailers comparing what their own store shows to a Chicago-area shopper, and teams that manage several accounts on one platform tend to start here. It is also the first carrier we recommend when a customer has no preference, simply because its pools are large and its geolocation readings are consistent.

Stock and ordering

The number of free AT&T devices in the rack changes through the day as lines are activated and released. The checkout page shows the live count for each carrier and each tier, and an order is only accepted when a device is free, so you never pay for a line that is not there. A line is active within seconds of payment, with the credentials in the dashboard. If AT&T is out when you look, T-Mobile and Verizon lines in the same rack are the alternatives, and the free location move lets you shift to another of our US cities later without losing paid time.

AT&T proxy questions