SRV SIP records - DNS analysis SK 2009/09

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SRV SIP records presence
result	number	%
domain does not provide SIP services	173940	93.21
domain provides SIP services with UDP protocol	133	0.07
domain provides SIP services with TCP protocol	0	0
domain provides SIP services with TCP and UDP protocol	20	0.01

Syntax check of SRV records
result	number	%
All SRV records are syntactically correct	152	0.08
some SRV record has invalid syntax	0	0
some SRV record contains an IP address	1	0
unknown or not tested	173940	93.21

Resolve SIP servers from SRV records to IP addresses
result	number	%
All domain names from SRV SIP records can be resolved to IP address	80	0.04
some domain names from SRV records can't be resolved to IP	0	0
none of domain names from SRV records can't be resolved to IP	73	0.04
unknown or not tested	173940	93.21

SRV records duplicity
result	number	%
SRV records are not duplicate	153	0.08
SRV records contain duplicate domain names	0	0
some of domain names from SRV records points to the same IP	0	0
unknown or not tested	173940	93.21

TTL values check for SRV records
result	number	%
TTL values for SRV records are equal	153	0.08
TTL mismatch in TCP SRV records	0	0
TTL mismatch in UDP SRV records	0	0
unknown or not tested	173940	93.21

Reverse records for SIP servers
result	number	%
Reverse records match their IP addresses	135	0.07
reverse records mismatch for all SRV records	4	0
reverse records mismatch for some SRV records	0	0
reverse record for some SRV record does not exist	14	0.01
unknown or not tested	173940	93.21

AAAA records presence for SIP servers
result	number	%
at least one SIP server has IPv6 address (AAAA record)	0	0
none of SIP servers does not have IPv6 address (AAAA record)	153	0.08
unknown or not tested	173940	93.21

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