Domain technical report
Západočeská univerzita v Plzni
zcu.cz
Západočeská univerzita v Plzni má více než 300 studijních programů na devíti fakultách. Spojte život s jednou z nich a rozhodněte se pro studium v Plzni.
IPv41
IPv61
MX1
NS3
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89
Total
95
DNS
70
Email
88
Security
85
Network
100
Availability
Domainzcu.cz
IPv41
IPv61
MX records1
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
1 IPv4 address(es) detected.
IPv6 (AAAA)10 / 10 pts · Dns
1 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
3 NS record(s); 2 or more required.
SOA record10 / 10 pts · Dns
Authoritative zone record.
DNSSEC chain15 / 15 pts · Dns
DS and DNSKEY detected.
CAA policy0 / 5 pts · Dns
Certificate authority restriction.
DNS propagation10 / 10 pts · Dns
Agreement between public resolvers.
MX records20 / 20 pts · Mail
1 MX record(s).
SPF25 / 25 pts · Mail
SPF policy published.
DMARC25 / 25 pts · Mail
DMARC policy published.
DKIM0 / 20 pts · Mail
No tested DKIM selector responded.
MTA-STS0 / 5 pts · Mail
Mail transport policy.
TLS-RPT0 / 5 pts · Mail
TLS reporting policy.
Valid TLS certificate55 / 55 pts · Security
71 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers23 / 35 pts · Security
6 of 9 evaluated headers detected.
PTR reverse DNS30 / 30 pts · Network
PTR: svc1.ha.kube.zcu.cz
IPv4 diversity20 / 35 pts · Network
Two or more IPv4 addresses receive full points.
IPv6 connectivity35 / 35 pts · Network
AAAA availability.
DNS resolution40 / 40 pts · Availability
At least one address family must resolve.
HTTP response40 / 40 pts · Availability
HTTP/2 200
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
1 record(s)147.228.6.224
AAAA
1 record(s)2001:718:1801:1058::1:102
CNAME
0 record(s)—
Not configured
MX
1 record(s)10 fred.zcu.cz.
TXT
2 record(s)"MS=ms26894334" "v=spf1 mx ip4:147.228.0.0/16 ip6:2001:718:1801::/48 -all"
NS
3 record(s)hera.zcu.cz. erebos.zcu.cz. nsa.ces.net.
SOA
1 record(s)hera.zcu.cz. hostmaster.zcu.cz. 2026081000 7200 7200 1209600 3600
CAA
0 record(s)—
Not configured
DS
1 record(s)11081 13 2 31983F8C84C0152DA4A8ACB01F5526E084FE82C1FDCE787D9727BDC8 56B1D8F7
DNSKEY
2 record(s)257 3 13 13lWAFIoRjKGauqlIq/6bdBioVZJQq6ViKRmAoq73QKNgHghjzv3N0Mz /NQwVbROCkr44Qn9IQyepTaaYgf9Aw== 256 3 13 59lEUJ8qrhgsr7KvBXJzZvQmwiuFt1+NEsxcdVkV1XbTh3YGs+Ix+qML iET/q3zK2nDbx7zP1L72W9xWkxxHUw==
RRSIG
6 record(s)DS 13 2 3600 20260823054724 20260809041724 5166 cz. LMEIP3wPVbx0FFQcWY3YZbt7uoKjDdomz6uTxiO1R4FCStOPshDlh2Qu KCKp5OCU0fZpzhNLhPaFt6MuhRGnAw== A 13 2 7200 20260907133640 20260808130034 56114 zcu.cz. JUbrTQBlUa87Jo0LiUK1SOCJ30IslsQUvo/YmfAnZe2YMy5unejpWcLJ dZ1nFop0gmS6fA2jXP4z9UVusb5zxg== AAAA 13 2 7200 20260910002800 20260810120745 56114 zcu.cz. xjKJH+Etd819i8UqZjs14Q9haJwjzTGB1MQSeB6TRNrE627/s7956+ts FMxVUGqJI51LvILUeF/5fRqFMyDrbQ== SOA 13 2 86400 20260909053616 20260810120745 56114 zcu.cz. /b7m7/ZTL/4agvePZkdOFoMZBEjvWA5acJWpZc6JVsnVVVk4LH2tsxMJ 0eEa4Z2Wv6XMXtuJtzSBlNUgzSFqBQ== TXT 13 2 86400 20260830141822 20260731071936 56114 zcu.cz. o5BdEatSI4evBFWvQ7+RrSNX2+6nsIo6P3EP0YHvKEgohGmwuXevr20t /Gb67vf23xOokvYOEbZVN1dGwT0o3g== NS 13 2 86400 20260829102215 20260730055936 56114 zcu.cz. YOj3ctYtly1A6Nk2ilgYYqMCDHnKpJ2E/3DrFi52ZVSZJPnKSML+li6i l2KIiwWfx6nKT60wPS+y6FRst6wJjQ==
NSEC
0 record(s)—
Not configured
NSEC3
0 record(s)—
Not configured
SRV
0 record(s)—
Not configured
NAPTR
0 record(s)—
Not configured
TLSA
0 record(s)—
Not configured
SSHFP
0 record(s)—
Not configured
SPF
Configuredv=spf1 mx ip4:147.228.0.0/16 ip6:2001:718:1801::/48 -all
DMARC
Configuredv=DMARC1; p=none; rua=mailto:dmarc-rua@zcu.cz
DKIM
Not found—
Not configured
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
Západočeská univerzita v Plzni
Description
Západočeská univerzita v Plzni má více než 300 studijních programů na devíti fakultách. Spojte život s jednou z nich a rozhodněte se pro studium v Plzni.
Final URL
https://www.zcu.cz/cs/index.html
HTTP status
206
HTTP
Status
HTTP/2 200
Final URL
https://www.zcu.cz/cs/index.html
Version
3
Server
Apache
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
Let's Encrypt
CN
zcu.cz
Valid from
2026-07-23T01:29:46-05:00
Valid until
2026-10-21T01:29:45-05:00
Days remaining
71
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
6 activeHSTSImplemented
Content Security PolicyImplemented
X-Content-Type-OptionsImplemented
X-Frame-OptionsImplemented
Referrer PolicyImplemented
Permissions PolicyImplemented
Cross-Origin-Opener-PolicyNot detected
Cross-Origin-Embedder-PolicyNot detected
Cross-Origin-Resource-PolicyNot detected
DNS propagationComparison across public resolvers
Public resolver comparison
ConsistentConsistent propagation
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.8147.228.6.224
206,54 ms
Cloudflare
1.1.1.1147.228.6.224
162,29 ms
Quad9
9.9.9.9147.228.6.224
29,69 ms
OpenDNS
208.67.222.222147.228.6.224
787,26 ms
AdGuard
94.140.14.14147.228.6.224
343,21 ms
IP, geolocation and ASNAssociated network information
147.228.6.224
No datasuccess
No
country
region
city
asn
organization
isp
Visitor information
Visitorip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No
SMTPEmail port connectivity
fred.zcu.cz
Port 25: Closed/unreachable - 1.1 ms - Port 465: Closed/unreachable - 237.7 ms - Port 587: Closed/unreachable - 126.4 ms - 220 fred.zcu.cz ESMTP Postfix (Debian/GNU)