--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7171731598 dns-udp-queries-received-ipv6: 1222084490 dns-tcp-queries-received-ipv4: 140099204 dns-tcp-queries-received-ipv6: 35756934 dns-udp-responses-sent-ipv4: 7052414252 dns-udp-responses-sent-ipv6: 1240884845 dns-tcp-responses-sent-ipv4: 135216584 dns-tcp-responses-sent-ipv6: 33739307