*.ppu.edu1 observationsIssuerYR1 Let's EncryptValidity2026-08-02 to 2026-10-31Observed2026-10-11 11:43:35to2026-10-11 11:43:35SHA-256af2a3b5d4e33edfa325602ee0aa3ac14573408e59af6b6118bb9ed852adadc97⧉