--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4960205010 dns-udp-queries-received-ipv6: 1209165319 dns-tcp-queries-received-ipv4: 295979972 dns-tcp-queries-received-ipv6: 93201773 dns-udp-responses-sent-ipv4: 4801837297 dns-udp-responses-sent-ipv6: 1206796262 dns-tcp-responses-sent-ipv4: 287945007 dns-tcp-responses-sent-ipv6: 93200583