--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5715499450 dns-udp-queries-received-ipv6: 1334989593 dns-tcp-queries-received-ipv4: 296448543 dns-tcp-queries-received-ipv6: 165384494 dns-udp-responses-sent-ipv4: 5664379146 dns-udp-responses-sent-ipv6: 1359764590 dns-tcp-responses-sent-ipv4: 287011762 dns-tcp-responses-sent-ipv6: 170995581