DNS Spy
Connectivity: 100%
The following nameservers are available and responding correctly for DNS queries for your domain kondrac.cz.
| Nameserver | IP address(es) | SOA serial |
|---|---|---|
| ns1.svethostingu.cz. |
83.167.244.171
2a01:430:53::8300:171 |
2020022102 |
| ns2.svethostingu.cz. |
212.158.159.98
2a02:a40:20c::98 |
2020022102 |
| ns3.svethostingu.eu. |
165.22.74.103
2a03:b0c0:3:e0::14d:d001 |
2020022102 |
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 |
|---|---|---|
| ns1.svethostingu.cz. |
83.167.244.171
2a01:430:53::8300:171 |
35ms
35ms |
| ns2.svethostingu.cz. |
212.158.159.98
2a02:a40:20c::98 |
31ms
31ms |
| ns3.svethostingu.eu. |
165.22.74.103
2a03:b0c0:3:e0::14d:d001 |
19ms
19ms |
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.
- Nameserver ns1.svethostingu.cz. (83.167.244.171) replied quickly (< 50ms).
- Nameserver ns1.svethostingu.cz. (2a01:430:53::8300:171) replied in a reasonable time.
- Nameserver ns2.svethostingu.cz. (212.158.159.98) replied quickly (< 50ms).
- Nameserver ns2.svethostingu.cz. (2a02:a40:20c::98) replied in a reasonable time.
- Nameserver ns3.svethostingu.eu. (165.22.74.103) replied quickly (< 50ms).
- Nameserver ns3.svethostingu.eu. (2a03:b0c0:3:e0::14d:d001) replied in a reasonable time.
Resilience & Security: 100%
These are the locations and providers of your nameservers.
| Nameserver | Location | ISP |
|---|---|---|
| ns1.svethostingu.cz. |
IPv4: CZ
IPv6: CZ |
AS24971 - MASTER-AS Czech Republic www.master.cz, CZ
AS24971 - MASTER-AS Czech Republic www.master.cz, CZ |
| ns2.svethostingu.cz. |
IPv4: CZ
IPv6: CZ |
AS25248 - BLUETONE-AS The Czech Republic, CZ
AS25248 - BLUETONE-AS The Czech Republic, CZ |
| ns3.svethostingu.eu. |
IPv4: US
IPv6: US |
AS14061 - DIGITALOCEAN-ASN, US
AS14061 - DIGITALOCEAN-ASN, US |
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 (svethostingu.cz, svethostingu.eu).
DNS records: 100%
Our scans detected the following publicly available DNS records.
| Record | TTL | Value | |
|---|---|---|---|
| A | kondrac.cz | 1h |
83.167.244.201 83.167.244.202 |
| AAAA | kondrac.cz | 1h |
2a01:430:53::8300:201 2a01:430:53::8300:202 |
| DNSKEY | kondrac.cz | 5m |
ZSK | RSA/SHA-256 | AwEAAaud3rpPGFrbiaY4Z4Zs+pZk1E65Onec+wX5cfvJOR60KNxubxyT JEHLmDJ4ZdeakJn5w3NXNzxlSBdEmcpwi1PXZpR/c9RbLh8/sAyCdN5A zqZ+SW4Mz6ZLZCFWfA2CtEZWRU1OL2Ytt+Z6PwHk3qrNxXrF1MC5vEuM lnzRTKcb KSK | RSA/SHA-256 | AwEAAZwHrtTA4zyzaIbwR1LePGd0QQAAzzsf2IKgZ3bOxRO5KzOTLB7M 6Sfs+Nzd/iqmI8ffyZdFOnrRRqOLkZ/w8t7H/CagqFYQVjoc550xU/RR 3Et+rBFZeTpRWgbZBgBYxrnx6406UTAK6NY0ycocpqo5grrLSI9cQJ9z glMv0/wFLq1w6FhbZge7CnLnZ8C4gn72ROoIBzW6jJ5CsfStnb6/vVWG doI/C5LyN+Ko5ClZFBzMxrlA6JxoPKJYwbK0KVYf4FINf8Q0RUcYpMB5 IgwZtDrHL51g1mhoVpi6bp6Dv5goMqvRqqrVOlqSxpT1hfhEEUYtBTUb WSKJRVo57WM= |
| MX | kondrac.cz | 1h | 10 mail.svethostingu.cz. |
| NS | kondrac.cz | 1h |
ns1.svethostingu.cz. ns2.svethostingu.cz. ns3.svethostingu.eu. |
| SOA | kondrac.cz | 1h | ns1.svethostingu.cz. dnsmaster.svethostingu.cz. 2020022102 14400 3600 1209600 300 |
| CNAME | *.kondrac.cz | 1h | kondrac.cz. |
| CNAME | ftp.kondrac.cz | 1h | m25850.svethostingu-multi.cz. |
| CNAME | imap.kondrac.cz | 1h | imap.svethostingu.cz. |
| CNAME | mail.kondrac.cz | 1h | kondrac.cz. |
| CNAME | pop3.kondrac.cz | 1h | pop3.svethostingu.cz. |
| CNAME | smtp.kondrac.cz | 1h | smtp.svethostingu.cz. |
| CNAME | www.kondrac.cz | 1h | kondrac.cz. |
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 SPF records were found. SPF records limit which IPs are allowed to send mail from this domain. Even if this domain doesn't send e-mails, you should set up SPF to confirm it will never send e-mail, to prevent spoofing.
- No DMARC records have been found. Consider configuring DMARC for improved e-mail authentication.
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- The root DNS records points to multiple IPs using Round Robin.
- Single MX record but with multiple IPs associated to it.
- The MX record for "kondrac.cz" has a long TTL (1h+).
- The NS records have a long TTL (1h+).
- Your SOA serial number follows the best practice YYYYMMDDxx format.
- Found a root (apex) DNS record.
- Found a www DNS record.
- Found an IPv6 root 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.