--- version: rssac002v3 service: d.root-servers.net start-period: '2019-01-31T00:00:00Z' end-period: '2019-01-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7150783270 dns-udp-queries-received-ipv6: 1609868711 dns-tcp-queries-received-ipv4: 289103751 dns-tcp-queries-received-ipv6: 53876350 dns-udp-responses-sent-ipv4: 7150743353 dns-udp-responses-sent-ipv6: 1609777228 dns-tcp-responses-sent-ipv4: 288919023 dns-tcp-responses-sent-ipv6: 53831743