--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5263583374 dns-udp-queries-received-ipv6: 1031750081 dns-tcp-queries-received-ipv4: 517873858 dns-tcp-queries-received-ipv6: 136525897 dns-udp-responses-sent-ipv4: 4161778128 dns-udp-responses-sent-ipv6: 950290089 dns-tcp-responses-sent-ipv4: 367954289 dns-tcp-responses-sent-ipv6: 125186673