195.251.0.0 - 195.251.1.255 (HAFA) Hellenic Air Force Academy; GR 195.251.2.0 - 195.251.2.255 (MNE) Ministry of National Economy; Athens; GR 195.251.3.0 - 195.251.3.255 (CETI) Cultural and Educational Technology Institute; Xanthi, Greece; GR 195.251.4.0 - 195.251.4.255 (GR-ITI) Informatics and Telematics Institute; Research and development of applications in the areas of; Informatics and Telematics (located in Thessaloniki, Greece); GR 195.251.5.0 - 195.251.5.255 (NESTOR) NESTOR Institute for deep sea research technology and; neutrino astroparticle physics; GR 195.251.6.0 - 195.251.7.255 (NHRF-NET) National Documentation Centre; National Hellenic Research Foundation; GR 195.251.8.0 - 195.251.15.255 (TEIPAT) Technological Educational Institute (T.E.I.) of Patras; GR-263 34 Patras; Greece; GR 195.251.16.0 - 195.251.16.255 (YPEPTH) Greek Ministry of Education; GR 195.251.17.0 - 195.251.19.255 (UTHES-NET) University of Thessaly; GR 195.251.20.0 - 195.251.20.255 (HPINET) Hellenic Paidagogic Institute; GR 195.251.21.0 - 195.251.21.255 (BSRC-FLEMING) Biomedical Sciences Research Center "Al. Fleming"; GR 195.251.22.0 - 195.251.22.255 (TEI-SERRES) Network of TEI Serres; GR 195.251.124.0 - 195.251.127.255 (DIAS) T.E.I. OF LARISSA; Technological & Educational Institution of Larissa; GR 195.251.128.0 - 195.251.191.255 (AEGEAN-NET) University of the Aegean; GR 195.251.192.0 - 195.251.201.255 (UOI) University of Ioannina; GR 195.251.202.0 - 195.251.204.255 (NOANET) National Observatory of Athens; GR 195.251.205.0 - 195.251.207.255 (ICEHT) FORTH ICE/HT; GR 195.251.208.0 - 195.251.223.255 (UOM-NET) University of Macedonia; Thessaloniki; Greece; GR 195.251.224.0 - 195.251.231.255 (UOPIRAEUS-NET) University of Piraeus; Pireas; Greece; GR 195.251.232.0 - 195.251.235.255 (AUEB-NET) Athens University of Economics and Business; GR 195.251.236.0 - 195.251.237.255 (UOPIRAEUS-NET) University of Piraeus; Pireas; Greece; GR 195.251.238.0 - 195.251.243.255 (TEI-THES) Technological Educational Institute; Thessaloniki; Greece; GR 195.251.244.0 - 195.251.247.255 (HNMS) Hellenic National Meteorological Service; GR 195.251.248.0 - 195.251.255.255 (AUEB-NET) Athens University of Economics and Business; GR