--- version: rssac002v3 service: a.root-servers.net start-period: '2020-12-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8420249219 dns-udp-queries-received-ipv6: 2005922236 dns-tcp-queries-received-ipv4: 318700994 dns-tcp-queries-received-ipv6: 123411793 dns-udp-responses-sent-ipv4: 8223768975 dns-udp-responses-sent-ipv6: 1993563418 dns-tcp-responses-sent-ipv4: 305408011 dns-tcp-responses-sent-ipv6: 120685518