--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5208523514 dns-udp-queries-received-ipv6: 1310629848 dns-tcp-queries-received-ipv4: 279023787 dns-tcp-queries-received-ipv6: 54766776 dns-udp-responses-sent-ipv4: 5381268381 dns-udp-responses-sent-ipv6: 1334246655 dns-tcp-responses-sent-ipv4: 274964682 dns-tcp-responses-sent-ipv6: 54851979