--- version: rssac002v4 service: a.root-servers.net start-period: '2022-06-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6042410572 dns-udp-queries-received-ipv6: 2012547495 dns-tcp-queries-received-ipv4: 404385210 dns-tcp-queries-received-ipv6: 156893634 dns-udp-responses-sent-ipv4: 5773684064 dns-udp-responses-sent-ipv6: 2010991908 dns-tcp-responses-sent-ipv4: 342507775 dns-tcp-responses-sent-ipv6: 184321329