--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5611000594 dns-udp-queries-received-ipv6: 1271940273 dns-tcp-queries-received-ipv4: 116721876 dns-tcp-queries-received-ipv6: 29118028 dns-udp-responses-sent-ipv4: 5459784788 dns-udp-responses-sent-ipv6: 1270048796 dns-tcp-responses-sent-ipv4: 111346720 dns-tcp-responses-sent-ipv6: 27374923