--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3547696151 dns-udp-queries-received-ipv6: 394689760 dns-tcp-queries-received-ipv4: 112787083 dns-tcp-queries-received-ipv6: 17686477 dns-udp-responses-sent-ipv4: 3409843679 dns-udp-responses-sent-ipv6: 394297330 dns-tcp-responses-sent-ipv4: 116572196 dns-tcp-responses-sent-ipv6: 17748956