IP address lookup
172.58.171.221
172.58.171.221 is a mobile network address located in Chicago, Illinois, United States operated by T-Mobile USA, Inc., on autonomous system AS21928 (T-MOBILE-AS21928). Local time there is 2026-08-27 03:05:24 (America/Chicago).
Network
| ISP | T-Mobile USA, Inc. |
|---|---|
| Organisation | T-Mobile USA, Inc. |
| ASN | AS21928 |
| AS name | T-MOBILE-AS21928 |
| Reverse DNS | — |
| Mobile connection | Yes |
| Proxy / VPN | No |
| Hosting / datacenter | No |
Approximate location
IP geolocation is approximate. It points to the network's registered area, usually the ISP's local exchange, not the street address of the person connecting.
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Nearby addresses on the same network
Other addresses in this range that people have checked here.
- 172.58.171.128 Chicago
Common questions about 172.58.171.221
Is this someone's exact address?
No. IP geolocation resolves to the area where the block is registered by T-Mobile USA, Inc. and can be off by tens of kilometres, or point to a different city entirely for mobile and satellite connections. It is not a street address and should not be treated as one.
Why does 172.58.171.221 show Chicago, Illinois, United States when I'm somewhere else?
Because the location belongs to the network, not to you. If you're on a VPN, a corporate connection or a mobile carrier that routes traffic through a central gateway, the address reflects that gateway.
Can I change it?
Your provider assigns it, so you can't pick it directly. Restarting your router often gets you a new one if your ISP uses dynamic addresses. To control which address websites see, route your traffic through a VPN.