--- version: rssac002v4 service: a.root-servers.net start-period: '2022-01-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5366624455 dns-udp-queries-received-ipv6: 1327886922 dns-tcp-queries-received-ipv4: 316996477 dns-tcp-queries-received-ipv6: 65024364 dns-udp-responses-sent-ipv4: 5410169685 dns-udp-responses-sent-ipv6: 1353443637 dns-tcp-responses-sent-ipv4: 291839052 dns-tcp-responses-sent-ipv6: 65040404