--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5234942810 dns-udp-queries-received-ipv6: 1014576536 dns-tcp-queries-received-ipv4: 274865284 dns-tcp-queries-received-ipv6: 106078724 dns-udp-responses-sent-ipv4: 5064772731 dns-udp-responses-sent-ipv6: 1013173233 dns-tcp-responses-sent-ipv4: 265762278 dns-tcp-responses-sent-ipv6: 106455698