--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5153046755 dns-udp-queries-received-ipv6: 981903672 dns-tcp-queries-received-ipv4: 495136903 dns-tcp-queries-received-ipv6: 134538773 dns-udp-responses-sent-ipv4: 4120274898 dns-udp-responses-sent-ipv6: 899578491 dns-tcp-responses-sent-ipv4: 354796473 dns-tcp-responses-sent-ipv6: 120873348