--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5263049072 dns-udp-queries-received-ipv6: 968943892 dns-tcp-queries-received-ipv4: 550447264 dns-tcp-queries-received-ipv6: 127697707 dns-udp-responses-sent-ipv4: 4171830224 dns-udp-responses-sent-ipv6: 872664459 dns-tcp-responses-sent-ipv4: 429650303 dns-tcp-responses-sent-ipv6: 119017124