--- version: rssac002v3 service: i.root-servers.net start-period: '2019-06-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1116130046 dns-udp-queries-received-ipv6: 295908782 dns-tcp-queries-received-ipv4: 13673893 dns-tcp-queries-received-ipv6: 2113777 dns-udp-responses-sent-ipv4: 1129062194 dns-udp-responses-sent-ipv6: 301863765 dns-tcp-responses-sent-ipv4: 13284553 dns-tcp-responses-sent-ipv6: 2144253