--- version: rssac002v3 service: a.root-servers.net start-period: '2017-04-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4375946557 dns-udp-queries-received-ipv6: 456955501 dns-tcp-queries-received-ipv4: 178434914 dns-tcp-queries-received-ipv6: 8220209 dns-udp-responses-sent-ipv4: 4364615715 dns-udp-responses-sent-ipv6: 456896734 dns-tcp-responses-sent-ipv4: 178507992 dns-tcp-responses-sent-ipv6: 8356698