First Triple Nested Antiresonant Nodeless Hollow Core Fiber (TNANF) Achieving 0.25 dB/km Loss with Small $145/250 mu mathrm{m}$ Glass/Coating Diameters. - Ghafour Amouzad Mahdiraji; Gregory Jackson; Seyed Mohammad Abokhamis Mousavi; Naveen K. Baddela; Jaroslaw Rzegocki; Gianluca Guerra; Mahmudur Rahman; Chiang Ping Saw; Ian A. Davidson; Gregory T. Jasion; Austin Taranta; Francesco Poletti (ECOC, 2025)