German numbers on InstantSMS use the +49 country code. As with UK numbers, the domestic leading 0 is dropped in international format - a number written domestically as 0151 23456789 becomes +4915123456789. German mobile numbers vary in length more than US or UK numbers, so double-check you've copied the full number exactly as shown, including all digits after the country code. These are real, working lines used specifically for receiving inbound SMS; they cannot send messages or receive calls. German platforms and services - especially banking-adjacent or regulated ones - tend to apply stricter identity verification, so temporary numbers work best here for lower-stakes sign-ups rather than anything requiring KYC-level checks.
App compatibility
- Generally reliable for: Telegram, general e-commerce sign-ups, forums
- Mixed results: Instagram, Discord
- Frequently blocked: WhatsApp, Google, and most German banking or fintech apps - these apply strict number verification well beyond standard shared-line detection
