--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6670434542 dns-udp-queries-received-ipv6: 1346044459 dns-tcp-queries-received-ipv4: 146352985 dns-tcp-queries-received-ipv6: 32678795 dns-udp-responses-sent-ipv4: 6497509900 dns-udp-responses-sent-ipv6: 1328258051 dns-tcp-responses-sent-ipv4: 140043353 dns-tcp-responses-sent-ipv6: 30474287