--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4875163469 dns-udp-queries-received-ipv6: 1130690858 dns-tcp-queries-received-ipv4: 280792850 dns-tcp-queries-received-ipv6: 131811130 dns-udp-responses-sent-ipv4: 4717284519 dns-udp-responses-sent-ipv6: 1128482085 dns-tcp-responses-sent-ipv4: 269887147 dns-tcp-responses-sent-ipv6: 132021427