--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6627715700 dns-udp-queries-received-ipv6: 1273653080 dns-tcp-queries-received-ipv4: 145525552 dns-tcp-queries-received-ipv6: 39258510 dns-udp-responses-sent-ipv4: 6514450200 dns-udp-responses-sent-ipv6: 1261369793 dns-tcp-responses-sent-ipv4: 138150403 dns-tcp-responses-sent-ipv6: 36615865