--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6372873694 dns-udp-queries-received-ipv6: 1318165083 dns-tcp-queries-received-ipv4: 289271620 dns-tcp-queries-received-ipv6: 115968126 dns-udp-responses-sent-ipv4: 6139343363 dns-udp-responses-sent-ipv6: 1316122938 dns-tcp-responses-sent-ipv4: 277553838 dns-tcp-responses-sent-ipv6: 116138883