--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5372105469 dns-udp-queries-received-ipv6: 1304065429 dns-tcp-queries-received-ipv4: 598370967 dns-tcp-queries-received-ipv6: 184395441 dns-udp-responses-sent-ipv4: 4648965238 dns-udp-responses-sent-ipv6: 1146375124 dns-tcp-responses-sent-ipv4: 573582068 dns-tcp-responses-sent-ipv6: 169148006