--- version: rssac002v3 service: a.root-servers.net start-period: '2021-05-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5528369753 dns-udp-queries-received-ipv6: 1137868382 dns-tcp-queries-received-ipv4: 354948215 dns-tcp-queries-received-ipv6: 120860169 dns-udp-responses-sent-ipv4: 5479849140 dns-udp-responses-sent-ipv6: 1162286323 dns-tcp-responses-sent-ipv4: 321764957 dns-tcp-responses-sent-ipv6: 121364854