--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6207985368 dns-udp-queries-received-ipv6: 981200909 dns-tcp-queries-received-ipv4: 255007962 dns-tcp-queries-received-ipv6: 65413732 dns-udp-responses-sent-ipv4: 6019669100 dns-udp-responses-sent-ipv6: 966442102 dns-tcp-responses-sent-ipv4: 252491155 dns-tcp-responses-sent-ipv6: 65530698