AT&T Mobile Proxies, City by City

AT&T is the first column on our menu in every city, and for most jobs it is the comfortable default: a big, well-labelled network that every site has seen a billion times. This page is about how an AT&T line behaves in each of our eight cities, where it reads exactly as you expect, where it does not, and how to go from the menu to a live AT&T address in about a minute.

What a site sees from an AT&T line

Connect through an AT&T line and the site on the other end sees an address registered to AT&T Mobility, autonomous system AS20057, flagged as a mobile network by every geolocation and fraud vendor we have checked. The location field reads the state and, in most of our cities, the metro. The address is shared with ordinary AT&T subscribers behind carrier-grade NAT, which is the reason it is treated as a phone and not as a server.

What you hold exclusively is the SIM, the device it sits in, and the history that pair builds while the line is yours. Nobody else uses that device during your term.

AT&T's regional pools also carry the prepaid brands and the virtual carriers that ride on its towers, so at any hour an AT&T address is in use by a wide mix of ordinary handsets: commuters, students, delivery drivers, people checking the score. That mix is what a fraud vendor sees when it looks at the address, and it is why an AT&T line is rarely treated with suspicion. A site that blocked AS20057 would be blocking a large slice of its own mobile visitors in every one of our cities.

How AT&T reads in each of our cities

AT&T's pools are regional, and in a few places the region is labelled with the nearest big metro rather than the city the device is in. Here is the honest city-by-city picture.

• New York: reads as New York, New York metro. Deep pool, consistent labelling.
• Los Angeles: reads as California, Los Angeles metro. Occasionally another Southern California city.
• Chicago: reads as Illinois, Chicago. One of the cleanest AT&T reads on the menu.
• Houston: reads as Texas, Houston. Occasionally another Texas metro.
• Phoenix: reads as Arizona, Phoenix. Very consistent.
• Miami: reads as Florida, usually Miami, sometimes Florida without a metro.
• North Carolina: reads as North Carolina, Charlotte or Raleigh depending on the device.
• Boston: reads as New York. This is the one real quirk: AT&T's Boston pool is labelled New York in the databases, while Verizon from the same shelf reads as Boston. If Boston by name matters, order Verizon there.

4G and 5G on AT&T

A site cannot tell the two apart; both are AS20057 and the same pool. The difference is the ceiling at the device: 4G LTE typically 20–45 Mbps, 5G 50+ Mbps, depending on carrier signal at the device. AT&T's 5G is strongest in New York, Los Angeles, Chicago, Houston and Miami on our shelves. For accounts and browsing, the 4G day pass at $4 is enough; for heavy pages or several sessions, 5G at $5.

Rotation and sticky behaviour

AT&T sits between the other two carriers. Left alone, it holds an address for a good stretch, often hours, so a line used for an account looks like a phone that stayed on one tower. Rotate from the dashboard, a rotation link, the API, a timer or by hand and the device reconnects and draws a fresh address from the same regional pool; there is no waiting period between rotations. Repeats happen, as they do on every carrier, because the pool is random, not sequential.

A sensible routine on AT&T looks like this: start the day, confirm the address on a what-is-my-IP page, do the account's normal activity on that address, and rotate only when you switch to an unrelated task. If you are measuring the pool instead, a rotation loop from a script will show new addresses arriving steadily, with the occasional repeat, which on AT&T tends to appear later than on T-Mobile and earlier than on Verizon.

Who should pick AT&T

Anyone whose account or audience is on AT&T. Anyone who wants a dependable, middle-of-the-road carrier that does not need thinking about. Anyone ordering Chicago, Phoenix or New York, where AT&T reads as cleanly as it gets. Not Boston, unless Boston reading as New York is fine for the job.

AT&T also pairs well with the other two carriers in the same city. A research job that wants three independent pools in Houston buys one day pass on each carrier for $12 and gets three devices that never share an address. If one carrier's pool in a city is having a noisy week, the other two are unaffected, and that is a cheaper form of resilience than anything a single line can offer.

Ordering an AT&T line

Open the locations page, pick a city, pick AT&T, choose 4G or 5G, choose the hourly test, a day, a week or a month. Register at zone.mobileproxyzone.com/register if you have not, pay, and the line activates on its own. The dashboard gives you host, port, username and password for HTTP(S) and SOCKS5. Day $4 or $5, week $26 or $29, month $62 or $69, hourly test $2 or $3 for the first two hours. If the city turns out wrong, move the line for free and keep your time.

AT&T proxy questions