--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6096234581 dns-udp-queries-received-ipv6: 1235746126 dns-tcp-queries-received-ipv4: 298180477 dns-tcp-queries-received-ipv6: 119702546 dns-udp-responses-sent-ipv4: 5927326431 dns-udp-responses-sent-ipv6: 1234343331 dns-tcp-responses-sent-ipv4: 287163963 dns-tcp-responses-sent-ipv6: 120207411