Summary and interesting results - DNS analysis CZ 2009/09
| Summary and interesting results | ||
| item | number | % |
| Total number of domains to test | 586695 | |
| Total number of domains tested | 585291 | 99.76 |
| Number of domain that could not be tested (no information about domain) | 1404 | 0.24 |
| Number of unique DNS servers per name | 17413 | |
| Number of unique DNS servers per IP address | 13398 | |
| Average number of domain on DNS servers (by IP address of DNS server) | 44 | |
| Number of DNS servery with IPv6 | 267 | 1.53 |
| Number of domains with DNS servers with IPv6 | 34894 | 5.96 |
| Number of DNS servers (by name) with mismatch glue | 204 | 1.17 |
| Number of autonomous systems | 2000 | |
| Number of subnets | 7784 | |
| Sum of NS records on parent servers | 1353213 | |
| Sum of NS records in domain zones | 1333460 | |
| Sum of MX records | 751558 | |
| Sum of A records without www | 509468 | |
| Sum of A records with www | 541666 | |
| Sum of AAAA records without www | 4307 | |
| Sum of AAAA records with www | 4415 | |
| Sum of SRV SIP records | 245 | |
| Number of all errors | 254575 | |
| Number of all warnings | 959721 | |
| Number of all notices | 729040 | |
| Number of domains with errors | 206710 | 35.32 |
| Number of domains with warnings (and without errors) | 320238 | 54.71 |
| Number of domains with notices (and without errors and warnings) | 22984 | 3.93 |
| Number of domains without any problem | 36763 | 6.28 |
(c) Petr Šťastný 2010, e-mail: 