--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5154698131 dns-udp-queries-received-ipv6: 961797277 dns-tcp-queries-received-ipv4: 492110703 dns-tcp-queries-received-ipv6: 122285765 dns-udp-responses-sent-ipv4: 4029247006 dns-udp-responses-sent-ipv6: 867000301 dns-tcp-responses-sent-ipv4: 357377462 dns-tcp-responses-sent-ipv6: 110183830