--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6917311471 dns-udp-queries-received-ipv6: 1401350513 dns-tcp-queries-received-ipv4: 145006427 dns-tcp-queries-received-ipv6: 33096507 dns-udp-responses-sent-ipv4: 6799626368 dns-udp-responses-sent-ipv6: 1397647671 dns-tcp-responses-sent-ipv4: 138521057 dns-tcp-responses-sent-ipv6: 30058273