Random lasers have been studied using many materials, but only a couple have used glass matrices. Here, we present a study of zinc tellurite and aluminum oxide doped with different percentages of neodymium oxide (4 wt.%, 8 wt.%, and 16 wt.%) and demonstrate for the first time random laser action at 1337 nm. Laser emission was verified and the laser pulse???s rise time and input???output power slope were obtained. A cavity composed of the sample???s pump surface and an effective mirror formed by a second, parallel layer at the gain-loss boundary was probably the main lasing mechanism of this random laser system. The reason for the absence of emission at 1064 nm is thought to be a measured temperature rise in the samples??? active volume.Funda????o de Amparo ?? Pesquisa do Estado de S??o Paulo (FAPESP)Conselho Nacional de Desenvolvimento Cient??fico e Tecnol??gico (CNPq)Instituto Nacional de Ci??ncia e Tecnologia de Fot??nica (INCT)Instituto de Pesquisas Energ??ticas e Nucleares (IPEN)FAPESP: 19/06334-4; 17/10765-5CNPq: 3088422017-0; 308526/2021-0; 302532/2019-6INCT: 465.763/2014IPEN: 2020.06.IPEN.33.PD