Summary and interesting results - DNS analysis SK 2009/09
| Summary and interesting results | ||
| item | number | % |
| Total number of domains to test | 186611 | |
| Total number of domains tested | 186311 | 99.84 |
| Number of domain that could not be tested (no information about domain) | 300 | 0.16 |
| Number of unique DNS servers per name | 11901 | |
| Number of unique DNS servers per IP address | 8516 | |
| Average number of domain on DNS servers (by IP address of DNS server) | 22 | |
| Number of DNS servery with IPv6 | 137 | 1.15 |
| Number of domains with DNS servers with IPv6 | 1396 | 0.75 |
| Number of DNS servers (by name) with mismatch glue | 111 | 0.93 |
| Number of autonomous systems | 1358 | |
| Number of subnets | 4650 | |
| Sum of NS records on parent servers | 464757 | |
| Sum of NS records in domain zones | 436103 | |
| Sum of MX records | 344226 | |
| Sum of A records without www | 145710 | |
| Sum of A records with www | 166482 | |
| Sum of AAAA records without www | 9872 | |
| Sum of AAAA records with www | 9878 | |
| Sum of SRV SIP records | 177 | |
| Number of all errors | 122662 | |
| Number of all warnings | 319356 | |
| Number of all notices | 288387 | |
| Number of domains with errors | 83363 | 44.74 |
| Number of domains with warnings (and without errors) | 71794 | 38.53 |
| Number of domains with notices (and without errors and warnings) | 26525 | 14.24 |
| Number of domains without any problem | 4929 | 2.65 |
(c) Petr Šťastný 2010, e-mail: 