| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| cuce.ruk.cuni.cz | — | — | — |
| david.ruk.cuni.cz | — | — | — |
| golias.ruk.cuni.cz | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 195.113.89.35 | — | tarantula.is.cuni.cz | AS2852 | CESNET z.s.p.o. | 195.113.0.0/16 | 🇨🇿 Czechia | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 20 | — | cuce.ruk.cuni.cz | 195.113.0.8 | cuce.ruk.cuni.cz | AS2852 CESNET z.s.p.o. |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2001:718:1e03:622::12 | — | — | AS2852 | CESNET z.s.p.o. | 2001:718::/29 | 🇨🇿 Czechia | Prague |
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | mailto:tcs@cuni.cz |
| 0 | issue | harica.gr |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2025061700 |
| Primary NS (MNAME) | golias.ruk.cuni.cz |
| Responsible (RNAME) | postmaster@dec59.ruk.cuni.cz |
| Refresh | 1800s |
| Retry | 60s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 86400s |