--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7122164114 dns-udp-queries-received-ipv6: 1182645687 dns-tcp-queries-received-ipv4: 137193363 dns-tcp-queries-received-ipv6: 32701849 dns-udp-responses-sent-ipv4: 7005632457 dns-udp-responses-sent-ipv6: 1215161348 dns-tcp-responses-sent-ipv4: 133135241 dns-tcp-responses-sent-ipv6: 31303410