--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5459636837 dns-udp-queries-received-ipv6: 1123674311 dns-tcp-queries-received-ipv4: 275842723 dns-tcp-queries-received-ipv6: 86983441 dns-udp-responses-sent-ipv4: 5281132177 dns-udp-responses-sent-ipv6: 1122204175 dns-tcp-responses-sent-ipv4: 265546859 dns-tcp-responses-sent-ipv6: 87384971