*.aku.edu.tr3 observationsIssuerYR2 Let's EncryptValidity2026-10-13 to 2027-01-11Observed2026-10-17 15:36:24to2026-10-17 15:57:10SHA-2561600bbe8f0ec87268f282c7646ca781b647aa225798b10c34dce489f8c57aed4⧉