--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4830550092 dns-udp-queries-received-ipv6: 922929588 dns-tcp-queries-received-ipv4: 429941420 dns-tcp-queries-received-ipv6: 129090211 dns-udp-responses-sent-ipv4: 4064934156 dns-udp-responses-sent-ipv6: 870025219 dns-tcp-responses-sent-ipv4: 359279886 dns-tcp-responses-sent-ipv6: 128397448