--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7383017689 dns-udp-queries-received-ipv6: 1320880095 dns-tcp-queries-received-ipv4: 137943973 dns-tcp-queries-received-ipv6: 31853244 dns-udp-responses-sent-ipv4: 7300260521 dns-udp-responses-sent-ipv6: 1342501045 dns-tcp-responses-sent-ipv4: 131838505 dns-tcp-responses-sent-ipv6: 29600514