--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3640584246 dns-udp-queries-received-ipv6: 407062972 dns-tcp-queries-received-ipv4: 95646347 dns-tcp-queries-received-ipv6: 14368891 dns-udp-responses-sent-ipv4: 3636248313 dns-udp-responses-sent-ipv6: 406994663 dns-tcp-responses-sent-ipv4: 95486061 dns-tcp-responses-sent-ipv6: 14460799