Deutsche Telekom IP Lookup

Deutsche Telekom operates the following Autonomous System Numbers (ASNs): AS3320, AS1245. Deutsche Telekom (T-Online) operates AS3320, one of Europe's largest residential ASNs; its DS-Lite deployment means most German T-Online IPs share IPv4 addresses via CGNAT while having native IPv6. Use our IP lookup tool to identify which specific ASN a Deutsche Telekom IP belongs to.

Deutsche Telekom holds multiple IP address blocks allocated by its regional internet registry. These blocks are announced via BGP under AS3320 and AS1245. You can identify Deutsche Telekom IP addresses using our IP lookup tool — enter any IP and check if the ISP/ASN fields show Deutsche Telekom.

Enter the IP address in our IP Lookup tool. The ISP and ASN fields will show whether the IP is registered to Deutsche Telekom (look for AS3320 or AS1245). You can also use our WHOIS Lookup to query the IP's network registration directly from the RIR database.

Deutsche Telekom provides internet services in: Germany, Europe, Americas. IP geolocation for Deutsche Telekom addresses shows the registered location of the IP block, which may differ from the user's actual city.

Deutsche Telekom is a mixed (residential + mobile + enterprise) — its customer IPs are generally classified as residential or mobile, not VPN/proxy. However, customers may run VPN servers on Deutsche Telekom IP addresses, which can cause individual IPs to be flagged.