--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4809898155 dns-udp-queries-received-ipv6: 321961284 dns-tcp-queries-received-ipv4: 127881656 dns-tcp-queries-received-ipv6: 13646052 dns-udp-responses-sent-ipv4: 4743972150 dns-udp-responses-sent-ipv6: 321197476 dns-tcp-responses-sent-ipv4: 128532228 dns-tcp-responses-sent-ipv6: 13688022