--- version: rssac002v3 service: i.root-servers.net start-period: '2021-03-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4383686129 dns-udp-queries-received-ipv6: 797153163 dns-tcp-queries-received-ipv4: 399289880 dns-tcp-queries-received-ipv6: 104319134 dns-udp-responses-sent-ipv4: 3723166797 dns-udp-responses-sent-ipv6: 753606259 dns-tcp-responses-sent-ipv4: 326898312 dns-tcp-responses-sent-ipv6: 102951203