--- version: rssac002v3 service: a.root-servers.net start-period: '2019-02-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5722850854 dns-udp-queries-received-ipv6: 830173383 dns-tcp-queries-received-ipv4: 173641527 dns-tcp-queries-received-ipv6: 35419418 dns-udp-responses-sent-ipv4: 5600652969 dns-udp-responses-sent-ipv6: 829739992 dns-tcp-responses-sent-ipv4: 170411537 dns-tcp-responses-sent-ipv6: 32492608