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Total

DNS

100

Email

Security

Network

100

Availability

Domainmuni.cz

IPv41

IPv60

MX records1

StatusActive

Domain technical report

Masarykova univerzita | MUNI

muni.cz

Generated: 2026-08-09T03:32:58-05:00 · Cached result

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IPv41

IPv60

MX1

NS4

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

4 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 policy5 / 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.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

✓

MTA-STS5 / 5 pts · Mail

Mail transport policy.

✓

TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

81 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: webcentrum-redirect.ics.muni.cz

IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 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)

147.251.5.239

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

50 relay.muni.cz.

TXT

7 record(s)

"atlassian-domain-verification=HiD6B1jQ7/Dlw6gabcWmGD6ZYZ2r9ugxcBB1KI594kZw89yTjNnbeEeHcU3UcZGB"
"atlassian-sending-domain-verification=54f720d3-cbcd-420b-ae33-9fcedb78ab54"
"apple-domain-verification=M6QN1Ikp4RMsnLoW"
"status-page-domain-verification=xxx37pp3swrw"
"v=spf1 ip4:147.251.4.0/26 ip4:147.251.48.3 ip4:147.251.49.6 ip4:147.251.49.7 include:_spf-ips.muni.cz include:_spf.atlassian.net include:stspg-customer.com include:spf.protection.outlook.com include:_spf.google.com -all"
"MS=ms85476152"
"google-site-verification=ftbJc_Whlu5o5bA5VYCNcVPJ195FrL1gkVQNwQUATLU"

NS

4 record(s)

ns2.muni.cz.
nsa.ces.net.
ns.muni.cz.
ns2.muninet.cz.

SOA

1 record(s)

ns.muni.cz. moucka.ics.muni.cz. 2026080920 28800 7200 1209600 7200

CAA

4 record(s)

0 issue "sectigo.com"
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 issue "harica.gr"

DS

1 record(s)

23957 13 2 3FA1BEA98193A3709E563E3F67A8CFAC79223F504E6EBC599EBF031F 8C4AFDA1

DNSKEY

1 record(s)

257 3 13 FCAFdu5krKSJYsmhZyEMNvGIStGRjW4u8aIaFn2gcNJOjVaJ1J9nEKX8 EK45xM3VMer36Zzm+bT0V4+TYhhiyg==

RRSIG

2 record(s)

NS 13 2 7200 20260818032249 20260804032227 23957 muni.cz. I5Js5mAx18gzsdjkO/uV+P5IYZtC2Hj/lvWfTXOBdYzo4D/kdJPo/Zis 5185AawfpYCTWMl5g/6gUc1LEG4JIg==
DS 13 2 3600 20260823054724 20260809041724 5166 cz. aQ7vZoHG9oATZs+r8OoSDACwPisvVBQ32Qx2HK/Ml6ZUxsvIehe8Zdce B3b+Zly5+Od7jjmDVjJGF1Rno5xEEQ==

NSEC

1 record(s)

100.muni.cz. A NS SOA MX TXT RRSIG NSEC DNSKEY CDS CDNSKEY CAA

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

Configured

v=spf1 ip4:147.251.4.0/26 ip4:147.251.48.3 ip4:147.251.49.6 ip4:147.251.49.7 include:_spf-ips.muni.cz include:_spf.atlassian.net include:stspg-customer.com include:spf.protection.outlook.com include:_spf.google.com -all

DMARC

Configured

v=DMARC1; p=quarantine; pct=100; ruf=mailto:dmarcreports-ruf@muni.cz; rua=mailto:dmarcreports@muni.cz,mailto:dmarc_agg@vali.email; adkim=r; aspf=r; fo=1

DKIM

Selector default

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDZBXjHjZUhvk5b8zOHY5LNmcms/+VTvdsyrh3R6rVqUs4wF4w0fboGlpAidjtcO3nuiPL7VULFkvxT7C4FdDzt/SkonDFUGifoGjA4Z091GNOtFfGzLnC8HNFhuU8/W3Iex9rd8cm4xXzuwsGwi2nOAfk5VuzPBwNWCD5wr2fE8QIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Masarykova univerzita | MUNI

Description

Final URL

https://www.muni.cz/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://www.muni.cz/

Version

Server

Microsoft-IIS/10.0

X-Powered-By

ASP.NET

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

www.muni.cz

Valid from

2026-07-31T08:13:03-05:00

Valid until

2026-10-29T08:13:02-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

4 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

—

X-Frame-OptionsNot detected

—

Referrer PolicyNot detected

✓

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

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

147.251.5.239

61,32 ms

Cloudflare

1.1.1.1

147.251.5.239

171,43 ms

Quad9

9.9.9.9

147.251.5.239

274,61 ms

OpenDNS

208.67.222.222

147.251.5.239

858,39 ms

AdGuard

94.140.14.14

147.251.5.239

146,29 ms

IP, geolocation and ASNAssociated network information

147.251.5.239

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

relay.muni.cz

Port 25: Closed/unreachable - 129.6 ms - 
Port 465: Closed/unreachable - 251.7 ms - 
Port 587: Closed/unreachable - 117.1 ms - 220 minas.ics.muni.cz ESMTP Sendmail 8.17.1.9/8.17.1.9/Debian-2+deb12u2; Sun, 9 Aug 2026 10:32:55 +0200; (No UCE/UBE) logging access from: mail.wapp21.com(OK)-mail.wapp21.com [209.126.102.143]

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