--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5373443232 dns-udp-queries-received-ipv6: 1076696488 dns-tcp-queries-received-ipv4: 157190448 dns-tcp-queries-received-ipv6: 31149400 dns-udp-responses-sent-ipv4: 5250200356 dns-udp-responses-sent-ipv6: 1075389174 dns-tcp-responses-sent-ipv4: 152748329 dns-tcp-responses-sent-ipv6: 31785313