--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6768049064 dns-udp-queries-received-ipv6: 1279719561 dns-tcp-queries-received-ipv4: 125498336 dns-tcp-queries-received-ipv6: 25941433 dns-udp-responses-sent-ipv4: 6641967849 dns-udp-responses-sent-ipv6: 1287932178 dns-tcp-responses-sent-ipv4: 121312107 dns-tcp-responses-sent-ipv6: 25202937