--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6074037850 dns-udp-queries-received-ipv6: 1249515931 dns-tcp-queries-received-ipv4: 295284537 dns-tcp-queries-received-ipv6: 121171823 dns-udp-responses-sent-ipv4: 5884455656 dns-udp-responses-sent-ipv6: 1248075984 dns-tcp-responses-sent-ipv4: 282882814 dns-tcp-responses-sent-ipv6: 121642966