DNS Spy
Connectivity: 100%
The following nameservers are available and responding correctly for DNS queries for your domain upsys.cz.
| Nameserver | IP address(es) | SOA serial |
|---|---|---|
| ameisen.dnsant.cz. |
77.93.193.51
2a01:430:207:2::51 |
2024090842 |
| formica.dnsant.cz. |
93.185.103.88
2a00:1ed0:1:1300::88 |
2024090842 |
| karinca.dnsant.eu. |
5.75.142.217
2a01:4f8:1c1c:6af8::1 |
2024090842 |
| langgam.dnsant.eu. |
89.221.216.95
2a02:2b88:2:55f::1 |
2024090842 |
| pismire.dnsant.net. |
158.69.226.171
2607:5300:60:97ab::1 |
2024090842 |
Good news, no warnings or errors were found.
We could not find any recommendations at this time.
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- All nameservers reply with the same SOA serial number.
- The nameserver IPs are distributed across multiple subnets.
- All nameservers are online.
- Nameservers are available over IPv4.
- Nameservers are available over IPv6.
Performance: 100%
We tested each nameserver and measured the following response times.
| Nameserver | IP address(es) | Response time |
|---|---|---|
| ameisen.dnsant.cz. |
77.93.193.51
2a01:430:207:2::51 |
130ms
1ms |
| formica.dnsant.cz. |
93.185.103.88
2a00:1ed0:1:1300::88 |
1ms
1ms |
| karinca.dnsant.eu. |
5.75.142.217
2a01:4f8:1c1c:6af8::1 |
1ms
1ms |
| langgam.dnsant.eu. |
89.221.216.95
2a02:2b88:2:55f::1 |
1ms
1ms |
| pismire.dnsant.net. |
158.69.226.171
2607:5300:60:97ab::1 |
1ms
1ms |
Good news, no warnings or errors were found.
We detected some possible recommendations for you to consider. No penalties were given for these, but resolving them can give you a higher DNS score.
- Nameserver ameisen.dnsant.cz. (77.93.193.51) replied reasonably fast (< 150ms), but you should aim for < 50ms response times.
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- Nameserver ameisen.dnsant.cz. (2a01:430:207:2::51) replied in a reasonable time.
- Nameserver formica.dnsant.cz. (93.185.103.88) replied quickly (< 50ms).
- Nameserver formica.dnsant.cz. (2a00:1ed0:1:1300::88) replied in a reasonable time.
- Nameserver karinca.dnsant.eu. (5.75.142.217) replied quickly (< 50ms).
- Nameserver karinca.dnsant.eu. (2a01:4f8:1c1c:6af8::1) replied in a reasonable time.
- Nameserver langgam.dnsant.eu. (89.221.216.95) replied quickly (< 50ms).
- Nameserver langgam.dnsant.eu. (2a02:2b88:2:55f::1) replied in a reasonable time.
- Nameserver pismire.dnsant.net. (158.69.226.171) replied quickly (< 50ms).
- Nameserver pismire.dnsant.net. (2607:5300:60:97ab::1) replied in a reasonable time.
Resilience & Security: 100%
These are the locations and providers of your nameservers.
| Nameserver | Location | ISP |
|---|---|---|
| ameisen.dnsant.cz. |
IPv4: CZ
IPv6: CZ |
AS24971 - MASTER-AS Czech Republic www.master.cz, CZ
AS24971 - MASTER-AS Czech Republic www.master.cz, CZ |
| formica.dnsant.cz. |
IPv4: CZ
IPv6: CZ |
AS43541 - VSHOSTING, CZ
AS43541 - VSHOSTING, CZ |
| karinca.dnsant.eu. |
IPv4: DE
IPv6: DE |
AS24940 - HETZNER-AS, DE
AS24940 - HETZNER-AS, DE |
| langgam.dnsant.eu. |
IPv4: CZ
IPv6: CZ |
AS197019 - WEDOS, CZ
AS197019 - WEDOS, CZ |
| pismire.dnsant.net. |
IPv4: CA
IPv6: CA |
AS16276 - OVH, FR
AS16276 - OVH, FR |
Good news, no warnings or errors were found.
We detected some possible recommendations for you to consider. No penalties were given for these, but resolving them can give you a higher DNS score.
- No CAA records found. Consider adding CAA records, as it adds increased security by limiting which Certificate Authorities can issue certificates for this domain. (more info)
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- You have more than 1 nameserver.
- The IPv4 nameservers are distributed among multiple providers.
- The IPv4 nameservers are distributed across multiple locations.
- The IPv6 nameservers are distributed among multiple providers.
- The IPv6 nameservers are distributed across multiple locations.
- DNSSEC is enabled.
- The nameservers are being operated from multiple domains (dnsant.cz, dnsant.eu, dnsant.net).
DNS records: 100%
Our scans detected the following publicly available DNS records.
| Record | TTL | Value | |
|---|---|---|---|
| A | upsys.cz | 5m | 20.82.12.44 |
| DNSKEY | upsys.cz | 1h | KSK | ECDSA Curve P-256 with SHA-256 | pYzziCwO3lDHKCVsRhWrnYlFfBR5gMasxIPlZNxEO9zU9xkfaZm2MAzS /Xc3ahJNGLSmiPcthPjYmTVSJVqzbg== |
| MX | upsys.cz | 1h | 1 upsys-cz.mail.protection.outlook.com. |
| NS | upsys.cz | 1h |
ameisen.dnsant.cz. formica.dnsant.cz. karinca.dnsant.eu. langgam.dnsant.eu. pismire.dnsant.net. |
| SOA | upsys.cz | 1h | formica.dnsant.cz. admin.dnsant.cz. 2024090842 14400 3600 604800 3600 |
| TXT | upsys.cz | 1h |
"MS=ms42943092" "google-site-verification=Ode3wyFezAylzVqFtrwJhQFJfe503-O-KdhTCfYWkxk" "pfjbzn5tqgwt56k9mf7wk2cnvjsrpfrz" "v=spf1 include:spf.protection.outlook.com -all" |
| TXT | _dmarc.upsys.cz | 1h | "v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=100" |
| CNAME | autodiscover.upsys.cz | 1h | autodiscover.outlook.com. |
| A | vpn.upsys.cz | 1h | 89.221.223.73 |
| AAAA | vpn.upsys.cz | 1h | 2a02:2b88:2:2::77ff:73 |
| CNAME | www.upsys.cz | 1h | black-cliff-0efe92303.3.azurestaticapps.net. |
Good news, no warnings or errors were found.
We detected some possible recommendations for you to consider. No penalties were given for these, but resolving them can give you a higher DNS score.
- No IPv6 record has been found on the zone apex (upsys.cz). Consider enabling IPv6 in the infrastructure by adding an AAAA record on this domain.
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- Single MX record but with multiple IPs associated to it.
- The MX record for "upsys.cz" has a long TTL (1h+).
- The NS records have a long TTL (1h+).
- Your SOA serial number follows the best practice YYYYMMDDxx format.
- SPF records have been found.
- SPF records are set up restrictively.
- DMARC records have been found.
- DMARC records are set up restrictively.
- Found a root (apex) DNS record.
- Found a www DNS record.
- The active nameservers match the NS records.
- The DNS records appear to be RFC compliant.
Have a look at other public DNS scans.