Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Network was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 24 days and the median time to publication was 47 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Ahmed Elmokashfi | Krzysztof Wróbel |
| Al Sakib Khan Pathan | Kurian Polachan |
| Albert Pagès | Lina Mohjazi |
| Alessandro Pozzebon | Maanak Gupta |
| Andrés Arcia-Moret | Maarten Weyn |
| Antonio Muñoz | Maja Pusnik |
| Armir Bujari | Manuela Montangero |
| Boris Aberšek | Marcin Kowalczyk |
| Bruno Miguel Sousa | Marek Amanowicz |
| Chin-Shiuh Shieh | Maria Claudia Surugiu |
| Chi-Wai Chow | Marko Matulin |
| Chunhua Geng | Melina P. Ioannidou |
| D. Manivannan | Ming-Chin Chuang |
| Daniel Madronal | Mishall Al-Zubaidie |
| Danilo Pianini | Mohammed Amin Almaiah |
| Dima Bykhovsky | Mohammed H. Alsharif |
| Eirini Eleni Tsiropoulou | Musa Ndiaye |
| Emilia Sipos | Naser Ojaroudi Parchin |
| Erol Gelenbe | Nina Shin |
| Evangelos K. Markakis | Panagiotis A. Karkazis |
| Evelina Pencheva | Paolo Casari |
| Fan Jiang | Paulo Rogerio Pereira |
| Faris Almalki | Rafael Asorey-Cacheda |
| Felicia Ramona Birau | Ralf Lübben |
| Filippo Campagnaro | Raúl Parada |
| Francesca Arrigo | Rizwan Ahmed Khan |
| Francesco Perono Cacciafoco | Santosh Gondi |
| Gianmarco Romano | Satyabrata Aich |
| Giuseppe Campobello | Srete Nikolovski |
| Gwo-Jiun Horng | Stefan S. Ivanovic |
| Hafiz Majid Hussain | Tanesh Kumar |
| Hakim Mellah | Truong Cong Thang |
| He Fang | Vasco N. G. J. Soares |
| Hiroshi Tsunoda | Vincenza Carchiolo |
| Hyung-Jin Mun | Wanguo Jiao |
| Indika Kumara | Y. M. Tang |
| Jawad Ahmad | Yuan Du |
| John Paparrizos | Zheng-Guang Wu |
| Juan Miguel Fernán-dez-Campoy | Zhimeng Yin |
| Kamran Shaukat |
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