--- version: rssac002v3 service: a.root-servers.net start-period: '2020-12-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5227782414 dns-udp-queries-received-ipv6: 971656394 dns-tcp-queries-received-ipv4: 268730982 dns-tcp-queries-received-ipv6: 107698935 dns-udp-responses-sent-ipv4: 5079817265 dns-udp-responses-sent-ipv6: 969741953 dns-tcp-responses-sent-ipv4: 258927648 dns-tcp-responses-sent-ipv6: 108116544