T-Mobile Lines: Network Facts for Developers

A T-Mobile line from Mobile Proxies US exits on an address owned by T-Mobile USA, autonomous system AS21928, from a SIM in a device we operate in one of eight US metros. In GET /proxies/my it appears as a licence with carrier T-Mobile, its city, network tier, host and ports, login and rotation link. This page states the T-Mobile-specific facts: identification, how addresses are shared and translated, why T-Mobile geolocates most precisely, rotation behaviour, protocols, speeds and prices.

Identification

ASN lookups on the exit IP return T-Mobile USA, AS21928, country US, connection type mobile. The address a destination sees is IPv4. T-Mobile's handset network is IPv6-first internally, with IPv4 provided through translation at the carrier's edge; from the outside this is invisible except that the public IPv4 address is shared with other subscribers behind the same translation gateway. Assert ASN and connection type in code.

Sharing and translation

Many T-Mobile subscribers share each public IPv4 address. Reputation and fraud scores on that address describe the crowd behind it. Destination sites classify the address as mobile and treat it leniently because blocking it would block real customers. The line's SIM and device are yours alone; sharing happens at the carrier's translation layer. A returning address in a destination's logs is the normal condition of the mobile internet.

Geolocation: the metro itself

Of the three carriers, T-Mobile most consistently geolocates to the metro the device is in. Country and state are reliable; the city string reads the metro in most databases most of the time. This is a property of how T-Mobile lays out its gateways and registers its address blocks. When a job needs the city field to match (local search tests, store finders, weather, regional news), T-Mobile is the carrier to buy. Still assert country and state and log the city; databases lag each other after any re-plan.

Rotation semantics on T-Mobile

A rotate request makes the modem re-attach; T-Mobile assigns a new public address from the pool behind that gateway. Completion is usually a few seconds, occasionally up to half a minute under load. Pools per gateway tend to be wide, so successive rotations on T-Mobile often yield addresses from different blocks within the same region. The address is sticky when left alone for as long as the network keeps the session. There is no limit on how many rotations you make; min_time_change_ip gives the wait the rotation link holds a line to, and phone lines have their own cooldown of 1 to 2 minutes.

Endpoints and protocols

HTTP(S) endpoint, SOCKS5 endpoint with UDP, username and password, and a VLESS link per line. One exit IP for both proxy ports. Use socks5h for remote DNS. For Chromium-based automation, pass the HTTP endpoint and credentials at launch, or build a local unauthenticated SOCKS port with xray from the VLESS link. GET /proxy/status?license=UUID reports the current exit IP; rotation_link rotates.

Metros, devices and speed

T-Mobile lines are available in all eight metros: New York, Los Angeles, Chicago, Houston, Phoenix, Miami, Boston and North Carolina. Device chosen at checkout: 4G or 5G USB modem, cellular router or Android phone. 4G up to 25 Mbps download, 5G up to 50 Mbps, varying with cell load and time of day. The 5G+ add-on on 5G lines describes an average of 70 Mbps or more download on selected lines, not guaranteed. Moves between metros are free with remaining time kept.

When T-Mobile is the right carrier

Any test where the city must read the metro. Pool-size measurements where wide per-gateway pools are useful. Reproducing reports from T-Mobile users. Tests that need AS21928. For a report naming AT&T or Verizon, match that carrier instead; for a general US mobile vantage point any of the three serves.

Prices and access

4G: $5 a day, $29 a week, $66 a month. 5G: $6 a day, $33 a week, $77 a month. Hourly: 4G $2 for the first two hours then $2 an hour, 5G $3 then $3 an hour, up to four hours, never auto-renewing, hours counting toward a day plan when the line is kept the full day. Card, PayPal, Bitcoin, USDT including TRC-20, Ethereum, Zelle, bank wire. Live on payment; visible in the dashboard and GET /proxies/my at once.

T-Mobile proxy questions