--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6853867495 dns-udp-queries-received-ipv6: 1065048958 dns-tcp-queries-received-ipv4: 184847093 dns-tcp-queries-received-ipv6: 29389401 dns-udp-responses-sent-ipv4: 6642898427 dns-udp-responses-sent-ipv6: 1064566076 dns-tcp-responses-sent-ipv4: 179188261 dns-tcp-responses-sent-ipv6: 30005835