--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5608567579 dns-udp-queries-received-ipv6: 1220721123 dns-tcp-queries-received-ipv4: 285000948 dns-tcp-queries-received-ipv6: 99481798 dns-udp-responses-sent-ipv4: 5444941479 dns-udp-responses-sent-ipv6: 1218815261 dns-tcp-responses-sent-ipv4: 274147839 dns-tcp-responses-sent-ipv6: 99725785