--- version: rssac002v3 service: a.root-servers.net start-period: '2017-09-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4529171540 dns-udp-queries-received-ipv6: 425510096 dns-tcp-queries-received-ipv4: 146221346 dns-tcp-queries-received-ipv6: 10814794 dns-udp-responses-sent-ipv4: 4519614195 dns-udp-responses-sent-ipv6: 425336580 dns-tcp-responses-sent-ipv4: 145906965 dns-tcp-responses-sent-ipv6: 10917984