--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6185570423 dns-udp-queries-received-ipv6: 1345327553 dns-tcp-queries-received-ipv4: 301200163 dns-tcp-queries-received-ipv6: 155401895 dns-udp-responses-sent-ipv4: 6001152017 dns-udp-responses-sent-ipv6: 1343543121 dns-tcp-responses-sent-ipv4: 289448149 dns-tcp-responses-sent-ipv6: 158156477