--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6724810457 dns-udp-queries-received-ipv6: 1317935714 dns-tcp-queries-received-ipv4: 148317059 dns-tcp-queries-received-ipv6: 35618962 dns-udp-responses-sent-ipv4: 6590379047 dns-udp-responses-sent-ipv6: 1288509733 dns-tcp-responses-sent-ipv4: 140767387 dns-tcp-responses-sent-ipv6: 31581807