TITLE: GCN CIRCULAR NUMBER: 32928 SUBJECT: GRB 221110A: VLT/X-shooter redshift DATE: 22/11/10 05:18:41 GMT FROM: Daniele B Malesani at Radboud U L. Izzo (DARK/NBI), D. B. Malesani (Radboud Univ. and DAWN/NBI), S. Vejlgaard Nielsen (DAWN/NBI), N. R. Tanvir (Univ. Leicester), J. P. U. Fynbo (DAWN/NBI), D. Xu (NAOC) report on behalf of the Stargate collabaration: We observed the optical afterglow of GRB 221110A (Williams et al., GCN 32925; Lipunov et al., GCN 32924; Strausbaugh & Cucchiara, GCN 32926; Pereyra et al., GCN 32927) using the ESO VLT UT3 (Melipal) equipped with the X-shooter spectrograph. Our spectra cover the wavelength range 3000-25000 AA, and consist of 2 exposures by 600 s each. The observation mid time was 2022 Nov 10.158 UT (1.33 hr after the GRB). We clearly detect continuum over the wavelength range 6200-25000 AA. A sharp break is visible around 6200 AA, which we identify as due to H I. From detection of multiple absorption features, which we interpret as due to Si IV, C IV, Fe II, O I, Si II, Al II, Al III, and many others, we infer a redshift of z = 4.06. An intervening system is also detected from Fe II and Mg II at z = 2.724. We acknowledge excellent support from the ESO observing staff in Paranal, in particular Michael Marsset and Florian Rodler.