Common use of DNS service availability Clause in Contracts

DNS service availability. Service availability as it applies to the DNS Service refers to the ability of the Nameservers, as a group, to resolve a DNS query from an Internet user. The committed Performance Specification is 99.999% measured in Monthly Timeframes. Performance Level. At any time at which it is available, each Nameserver (including a cluster of Nameservers addressed at a shared IP address) MUST be able to handle a load of queries for DNS data that is three times the measured daily peak (averaged over the Monthly Timeframe) of such requests on the most loaded Nameserver. Cross-Network Nameserver Performance Requirements. The committed Performance Specification for cross-network Nameserver performance is a measured Round-trip time of under 300 ms and measured packet loss of under 10%. Cross- network Nameserver performance measurements will be conducted by ICANN at times of it’s choosing, in the following manner: Whois Service Availability. The committed Performance Specification for Whois Service is 99.4% measured in Monthly Timeframes. Whois Service Performance Level. The Whois Service will, on average, be able to handle 50 queries per second. Whois Service Response Times. The Whois Service will have a maximum whois query response time of 1.5 seconds. Failure of the Whois Service to respond to three (3) consecutive rcPing commands initiated by the Registry Operator at regular intervals within such maximum processing time shall mean the Whois Service is considered unavailable.

DNS service availability. Service availability as it applies to the DNS Service refers to the ability of the Nameserversname servers, as a group, to resolve a DNS query from an Internet user. The committed Performance Specification is 99.999100% measured in Monthly Timeframes. Performance Level. At any time at which it is available, each Nameserver name server (including a cluster of Nameservers name servers addressed at a shared IP address) MUST be able to handle a load of queries for DNS data that is three times the measured daily peak (averaged over the Monthly Timeframe) of such requests on the most loaded Nameservername server. Cross-Network Nameserver Name server Performance Requirements. The committed Performance Specification for cross-network Nameserver name server performance is a measured Round-trip time of under less than 300 ms and measured packet loss of under fewer than 10%. Cross- Cross-network Nameserver name server performance measurements will be conducted by ICANN at times of it’s its choosing, in the following manner: Whois Service Availability. The committed Performance Specification for Whois Service is 99.4% measured in Monthly Timeframes. Whois Service Performance Level. The Each Whois Service willserver must, on average, be able to handle 50 a load of queries per secondthat is three times the measured daily peak (averaged over the Monthly Timeframe) of such requests on the most loaded Whois server. Whois Service Response Times. The Whois Service will have a maximum whois query response time of 1.5 seconds. Failure of the Whois Service to respond to three 3 (3three) consecutive rcPing commands initiated by the Registry Operator at regular intervals within such maximum processing time shall mean the Whois Service is considered unavailable.