DNS Spy
Connectivity: 100%
The following nameservers are available and responding correctly for DNS queries for your domain nspiv.cz.
| Nameserver | IP address(es) | SOA serial |
|---|---|---|
| ns1.regzone.cz. |
217.198.113.10
2a00:19a0:3:71:0:d9c6:710a:1 |
2025030706 |
| ns1.regzone.de. |
23.92.29.43
2600:3c02::f03c:91ff:fedb:a6e7 |
2025030706 |
| ns1.regzone.info. |
81.0.233.10
2001:1528:147::10 |
2025030706 |
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.regzone.cz. |
217.198.113.10
2a00:19a0:3:71:0:d9c6:710a:1 |
111ms
1ms |
| ns1.regzone.de. |
23.92.29.43
2600:3c02::f03c:91ff:fedb:a6e7 |
1ms
1ms |
| ns1.regzone.info. |
81.0.233.10
2001:1528:147::10 |
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 ns1.regzone.cz. (217.198.113.10) 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 ns1.regzone.cz. (2a00:19a0:3:71:0:d9c6:710a:1) replied in a reasonable time.
- Nameserver ns1.regzone.de. (23.92.29.43) replied quickly (< 50ms).
- Nameserver ns1.regzone.de. (2600:3c02::f03c:91ff:fedb:a6e7) replied in a reasonable time.
- Nameserver ns1.regzone.info. (81.0.233.10) replied quickly (< 50ms).
- Nameserver ns1.regzone.info. (2001:1528:147::10) replied in a reasonable time.
Resilience & Security: 100%
These are the locations and providers of your nameservers.
| Nameserver | Location | ISP |
|---|---|---|
| ns1.regzone.cz. |
IPv4: CZ
IPv6: CZ |
AS34222 - ZONER-AS, CZ
AS34222 - ZONER-AS, CZ |
| ns1.regzone.de. |
IPv4: US
IPv6: US |
AS63949 - AKAMAI-LINODE-AP Akamai Connected Cloud, SG
AS63949 - AKAMAI-LINODE-AP Akamai Connected Cloud, SG |
| ns1.regzone.info. |
IPv4: CZ
IPv6: CZ |
AS15685 - CASABLANCA-AS Internet & Collocation Provider, CZ
AS15685 - CASABLANCA-AS Internet & Collocation Provider, 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 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 (regzone.cz, regzone.de, regzone.info).
DNS records: 100%
Our scans detected the following publicly available DNS records.
| Record | TTL | Value | |
|---|---|---|---|
| A | nspiv.cz | 1h | 37.9.175.165 |
| DNSKEY | nspiv.cz | 1h |
ZSK | ECDSA Curve P-256 with SHA-256 | E8bm5c+BRTn5kFXSWQwfNdXMjaIonOZEbGFZcb+uczUA2H7iCR7gKevY 6/vIge6fgQRzOeq8ljmmuwqKXvlo9A== KSK | ECDSA Curve P-256 with SHA-256 | IfnvmzpVHZgfjjlGUTtm5BKvcgOSz4HXRFIjbyJVRkShLQpntszfAi69 vNtHW3Amtt6t7PzGrooWhrKKikL+mw== |
| MX | nspiv.cz | 1h | 0 nspiv-cz.mail.protection.outlook.com. |
| NS | nspiv.cz | 1h |
ns1.regzone.cz. ns1.regzone.de. ns1.regzone.info. |
| SOA | nspiv.cz | 1h | ns1.regzone.cz. administrator.czechia.cz. 2025030706 10800 1800 1814400 3600 |
| TXT | nspiv.cz | 1h |
"3765a5052ab551c8c26b87d2edcdaa9e8245104a927a6a479e6f0ba62b511bc9" "Vj4W7dhRikn3mbGL6fpzN3uzOqZj1EpJl9ZR8FYvT2bR/3rdPlxEQ1SqVkG2z3Tzh1ydKzKSyog8V18SxB50OA==" "apple-domain-verification=aX9qYR7L8k7RNIn5" "v=spf1 mx a:mail.nspiv.cz include:spf.protection.outlook.com -all" |
| TXT | _dmarc.nspiv.cz | 1h | "v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]" |
| SRV | _sip._tls.nspiv.cz | 1h | 100 1 443 sipdir.online.lync.com. |
| SRV | _sipfederationtls._tcp.nspiv.cz | 1h | 100 1 5061 sipfed.online.lync.com. |
| CNAME | autodiscover.nspiv.cz | 1h | autodiscover.outlook.com. |
| A | ftp.nspiv.cz | 1h | 212.96.160.82 |
| CNAME | intranet.nspiv.cz | 7200s | mail.nspiv.cz. |
| CNAME | lyncdiscover.nspiv.cz | 1h | webdir.online.lync.com. |
| A | mail.nspiv.cz | 1h | 212.96.160.82 |
| CNAME | ns.nspiv.cz | 7200s | ns1.calyx.cz. |
| CNAME | pop.nspiv.cz | 7200s | mail.nspiv.cz. |
| CNAME | selector1._domainkey.nspiv.cz | 1h | selector1-nspiv-cz._domainkey.nspivcz.onmicrosoft.com. |
| CNAME | selector2._domainkey.nspiv.cz | 1h | selector2-nspiv-cz._domainkey.nspivcz.onmicrosoft.com. |
| CNAME | sip.nspiv.cz | 1h | sipdir.online.lync.com. |
| CNAME | smtp.nspiv.cz | 7200s | mail.nspiv.cz. |
| A | www.nspiv.cz | 1h | 37.9.175.165 |
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 (nspiv.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 "nspiv.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.