--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6914629792 dns-udp-queries-received-ipv6: 1224270306 dns-tcp-queries-received-ipv4: 135543358 dns-tcp-queries-received-ipv6: 36700824 dns-udp-responses-sent-ipv4: 6787977726 dns-udp-responses-sent-ipv6: 1245412763 dns-tcp-responses-sent-ipv4: 130456046 dns-tcp-responses-sent-ipv6: 34645829