--- version: rssac002v3 service: a.root-servers.net start-period: '2021-05-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5476988456 dns-udp-queries-received-ipv6: 1112500897 dns-tcp-queries-received-ipv4: 345089763 dns-tcp-queries-received-ipv6: 116967315 dns-udp-responses-sent-ipv4: 5408291286 dns-udp-responses-sent-ipv6: 1137233716 dns-tcp-responses-sent-ipv4: 312751636 dns-tcp-responses-sent-ipv6: 117121418