Dear participants of the Graph Neural Networking challenge, First of all, thank you very much to all of you for your interest in the challenge. After finishing the validation of top-5 solutions, we are glad to officially announce the final ranking in the challenge website: https://bnn.upc.edu/challenge/gnnet2021/ We are really impressed by the outstanding results of this year’s edition. Special congratulations to top-3 teams, which will have access to the Grand Challenge Finale of the ITU AI/ML in 5G Challenge <https://aiforgood.itu.int/about/aiml-in-5g-challenge/>: 1st - PARANA Participant name(s): Bruno Klaus de Aquino Afonso Institution(s): Federal University of São Paulo (UNIFESP), Brazil 2nd - SOFGNN Participant name(s): Charles Boudreau, Huy Duong, Brigitte Jaumard, Junior Momo Ziazet Institution(s): Concordia University, Canada 3rd - ZTE AIOps Participant name(s): Huang Zhuoyao, Tan Yunsheng, Gao Yong, Tang Qingkun Institution(s): ZTE Corporation, China In the coming weeks we will celebrate an online award ceremony, where all of you are of course invited. More updates will follow in the next few days. By the way, we would also like to share with you that we are working on a new edition of the challenge for the next year. Please, stay tuned if you are interested. We will announce it through the challenge mailing list, as well as on the official social media channels of the Barcelona Neural Networking center: LinkedIn -> https://www.linkedin.com/company/bnn-upc Twitter -> @BNN_UPC <https://twitter.com/bnn_upc> Best regards, José Suárez-Varela Postdoctoral researcher Barcelona Neural Networking center Universitat Politècnica de Catalunya