--- version: rssac002v3 service: a.root-servers.net start-period: '2021-07-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4763417477 dns-udp-queries-received-ipv6: 1234018424 dns-tcp-queries-received-ipv4: 281892886 dns-tcp-queries-received-ipv6: 97398876 dns-udp-responses-sent-ipv4: 4627047808 dns-udp-responses-sent-ipv6: 1232467908 dns-tcp-responses-sent-ipv4: 275156734 dns-tcp-responses-sent-ipv6: 97454413