--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5399048812 dns-udp-queries-received-ipv6: 1255521743 dns-tcp-queries-received-ipv4: 288064527 dns-tcp-queries-received-ipv6: 180873786 dns-udp-responses-sent-ipv4: 5225191469 dns-udp-responses-sent-ipv6: 1253695631 dns-tcp-responses-sent-ipv4: 277987647 dns-tcp-responses-sent-ipv6: 189471877