--- version: rssac002v3 service: a.root-servers.net start-period: '2017-05-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3590404653 dns-udp-queries-received-ipv6: 355952920 dns-tcp-queries-received-ipv4: 161617580 dns-tcp-queries-received-ipv6: 7326157 dns-udp-responses-sent-ipv4: 3588125374 dns-udp-responses-sent-ipv6: 355932356 dns-tcp-responses-sent-ipv4: 161683095 dns-tcp-responses-sent-ipv6: 7448433