Somewhat odd result for s3.amazonaws.com:

    ~> python3 -m pywhat s3.amazonaws.com
    
    Possible Identification
    ┏━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━┓
    ┃ Matched Text     ┃ Identified as        ┃ Description ┃
    ┡━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━┩
    │ s3.amazonaws.com │ JSON Web Token (JWT) │ None        │
    └──────────────────┴──────────────────────┴─────────────┘