--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5484964520 dns-udp-queries-received-ipv6: 1097320906 dns-tcp-queries-received-ipv4: 272571485 dns-tcp-queries-received-ipv6: 86225002 dns-udp-responses-sent-ipv4: 5303367305 dns-udp-responses-sent-ipv6: 1095873034 dns-tcp-responses-sent-ipv4: 263715957 dns-tcp-responses-sent-ipv6: 86646869