DNS report for qr.cz

This report was generated 4 weeks ago. Refresh?
A+
Connectivity
100%
Performance
100%
Resilience & Security
100%
DNS records
100%
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Connectivity: 100%

The following nameservers are available and responding correctly for DNS queries for your domain qr.cz.

Nameserver IP address(es) SOA serial
ns1.regzone.cz. 217.198.113.10
2a00:19a0:3:71:0:d9c6:710a:1
2017102509
ns1.regzone.de. 23.92.29.43
2600:3c02::f03c:91ff:fedb:a6e7
2017102509
ns1.regzone.info. 81.0.233.10 2017102509

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
35ms
25ms
ns1.regzone.de. 23.92.29.43
2600:3c02::f03c:91ff:fedb:a6e7
98ms
102ms
ns1.regzone.info. 81.0.233.10 23ms

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.de. (23.92.29.43) 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. (217.198.113.10) replied quickly (< 50ms).
  • Nameserver ns1.regzone.cz. (2a00:19a0:3:71:0:d9c6:710a:1) replied in a reasonable time.
  • 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).

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 - LINODE-AP Linode, LLC, US
AS63949 - LINODE-AP Linode, LLC, US
ns1.regzone.info. IPv4: 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 qr.cz 1h 185.183.8.166
DNSKEY qr.cz 1h ZSK | ECDSA Curve P-256 with SHA-256 | bzGzqG2leFwwT25MhqoWPl402HjkF8xTKiMcT2aLT0ETlnQCiwvstvyf 6yI20CEReSMKSetGUJTLxam67Idbaw==

KSK | ECDSA Curve P-256 with SHA-256 | IfnvmzpVHZgfjjlGUTtm5BKvcgOSz4HXRFIjbyJVRkShLQpntszfAi69 vNtHW3Amtt6t7PzGrooWhrKKikL+mw==
MX qr.cz 1h 1 aspmx.l.google.com.
10 aspmx2.googlemail.com.
10 aspmx3.googlemail.com.
5 alt1.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
NS qr.cz 1h ns1.regzone.cz.
ns1.regzone.de.
ns1.regzone.info.
SOA qr.cz 1h ns1.regzone.cz. administrator.czechia.cz. 2017102509 10800 1800 1814400 3600
SRV _xmpp-server._tcp.qr.cz 1h 20 0 5269 alt1.xmpp-server.l.google.com.
20 0 5269 alt2.xmpp-server.l.google.com.
20 0 5269 alt3.xmpp-server.l.google.com.
20 0 5269 alt4.xmpp-server.l.google.com.
5 0 5269 xmpp-server.l.google.com.
CNAME calendar.qr.cz 1h ghs.googlehosted.com.
A ftp.qr.cz 1h 185.183.8.166
CNAME mail.qr.cz 1h ghs.googlehosted.com.
A www.qr.cz 1h 185.183.8.166

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.
  • No IPv6 record has been found on the zone apex (qr.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.

  • Multiple MX records found.
  • MX records with different priorities found (main + fall-back mailservers).
  • The MX record for "qr.cz" has a long TTL (1h+).
  • The MX records points to multiple mailservers.
  • 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.
  • The active nameservers match the NS records.
  • The DNS records appear to be RFC compliant.
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