Sites using sIFR
- 3
- #32,304instradns.comInstra Domain Name Servers (DNS)FR28 Sept 2026
- #42,005uni-sofia.bgНачало - Софийски университет "Св. Климент Охридски"BG28 Sept 2026
- #61,557tnstate.eduTennessee State University | Excellence is our HabitUS28 Sept 2026