--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4780737474 dns-udp-queries-received-ipv6: 823725848 dns-tcp-queries-received-ipv4: 386505566 dns-tcp-queries-received-ipv6: 97233359 dns-udp-responses-sent-ipv4: 3926350504 dns-udp-responses-sent-ipv6: 801796163 dns-tcp-responses-sent-ipv4: 351175360 dns-tcp-responses-sent-ipv6: 91729237