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Total

DNS

Email

Security

Network

Availability

Domaincvut.cz

IPv41

IPv60

MX records1

StatusActive

Domain technical report

cvut.cz

Generated: 2026-08-09T08:06:25-05:00 · Cached result

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IPv41

IPv60

MX1

NS2

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

2 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.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

18 day(s) remaining.

Certificate lifetime6 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: webmm-pub.is.cvut.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 response0 / 40 pts · Availability

No successful HTTP response.

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

147.32.3.202

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

0 cvut-cz.i-v1.mx.microsoft.

TXT

8 record(s)

"atlassian-domain-verification=rDtcgrRqfCu57VGnzGB8tCqBnMPAks3o5jhfw7hBb4uT/84gkk9aNX10HZjlwTJS"
"seIBuNBcvNeK9+Evkcig5KdavRRhFXEzhGCeU3BmsLh6L7Mn8VU0nd9RFxwJ7mKwKVETcgRw/COCLKtAjLRsjg=="
"apple-domain-verification=C6yIfuZzShjeDRIF"
"google-site-verification=CYYVcmesbYpla_zqVXhOjstTrXfGdoPFA23lBIJ"
"atlassian-domain-verification=qCOXRhgb/aDA39Ywd9RBNeUvFjtLRjQ4e1ax9kZuAhVHjbGrOHi/KTAA8qxPFsg3"
"cisco-ci-domain-verification=e5bc5596041bbfe889ea0981934f35e45ff09c125359cdd2963be8a813050bd"
"anthropic-domain-verification-q0acmw=bJTNkfCFhi6mrR4yD8BMQbESK"
"v=spf1 ip4:147.32.235.25 ip6:2001:718:2:2202::25 include:spf.protection.outlook.com include:_spf1.cvut.cz -all"

NS

2 record(s)

nss.cvut.cz.
ns.cvut.cz.

SOA

1 record(s)

ns.cvut.cz. hostmaster.cvut.cz. 13179 14401 3600 1209600 86400

CAA

0 record(s)

—

Not configured

DS

1 record(s)

41860 13 2 2311D5DF154638BEFA68B593C52E6B6C72060E33FF020392FA527B1F 4C3BF3B3

DNSKEY

1 record(s)

257 3 13 +XkJfh9Fh5wGJVpntLyKQRXkrRQhP+kL3lnJ1SQfG3XTjW9WBBknfO37 yynPQtat8S+kIuOJZaSgkLmMfS8drQ==

RRSIG

5 record(s)

DNSKEY 13 2 6400 20260829064014 20260730062535 41860 cvut.cz. gJdooO8VdE+PQdskSk+us8XT8MmeAu0Fw9P+cKCvof1VmTumlKNRmLva 19WrxjcBK15/86Yq2abxDQxlsQ31jA==
A 13 2 6400 20260903112918 20260804104310 41860 cvut.cz. 2rSHSGQp0+2WIZ6yZqExPuI/HliOnzSMCNrZ93nxLJmjaz+yOgf2S+gu DxB2qvQiiAu98MJ4xTiSt/SyQQQG2A==
NS 13 2 6400 20260903121124 20260804112916 41860 cvut.cz. Z2rkX+YOgYY59XCBF9+iVCrYgoV1uotcg08EP+cvg56SSCclibEP1Zpx 0/zTQYOlLPX/HRZedYlbKLpqOrdRmg==
MX 13 2 6400 20260903124222 20260804120428 41860 cvut.cz. yc4OljzP2PyFcmSmKQOHYgQQpoucHkvnbb6ouw6ccrxD5Xis5r6E6Ovf 5JjRLNquYtJV06gU00wgvDDieEagCw==
DS 13 2 3600 20260823054724 20260809041724 5166 cz. Cy98J5aPRRvKuDgSFMlQybLFoCByvU5Nf96k9V7+z/p7TlF6P/4f9fus fnR/jpNuCZ2aUPPhPICEJEvhUGn5mw==

NSEC

1 record(s)

_dmarc.cvut.cz. A NS SOA MX TXT RRSIG NSEC DNSKEY

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 ip4:147.32.235.25 ip6:2001:718:2:2202::25 include:spf.protection.outlook.com include:_spf1.cvut.cz -all

DMARC

Configured

v=DMARC1; p=reject; rua=mailto:dmarc-rua@dmarc.civ.cvut.cz

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCI24T+NS6FqVHhAR52Fqg7Q/ylk/mSmBUPaBapf5dmO4ehSsNrWK3KvZfYPbVUkust7zW/jY4AF9Kxyof0qpz/vfo4qNaFZm8D8XqYSLoAsgpcaMCSE+SlRT9+/LLK286hLVPD+HhGgc9UjGpfF1AJDkaamfzCpYjzrc2pbFh+kQIDAQAB; n=1024,1455839651,1471564451

Analyzed webpageMetadata and HTTP response

Title and description

No data

Title

Description

Final URL

https://cvut.cz/

HTTP status

HTTP

Status

Final URL

https://cvut.cz/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Hellenic Academic and Research Institutions CA

www.cvut.cz

Valid from

2025-08-27T08:31:14-05:00

Valid until

2026-08-27T08:31:14-05:00

Days remaining

Protocol

TLSv1.2

Cipher

ECDHE-RSA-AES256-GCM-SHA384

Security headers

0 active

—

HSTSNot detected

—

Content Security PolicyNot detected

—

X-Content-Type-OptionsNot detected

—

X-Frame-OptionsNot detected

—

Referrer PolicyNot detected

—

Permissions PolicyNot detected

—

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

147.32.3.202

189,00 ms

Cloudflare

1.1.1.1

147.32.3.202

149,37 ms

Quad9

9.9.9.9

147.32.3.202

145,63 ms

OpenDNS

208.67.222.222

147.32.3.202

156,22 ms

AdGuard

94.140.14.14

147.32.3.202

151,64 ms

IP, geolocation and ASNAssociated network information

147.32.3.202

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

cvut-cz.i-v1.mx.microsoft

Port 25: Closed/unreachable - 18.2 ms - 
Port 465: Closed/unreachable - 4038.9 ms - 
Port 587: Closed/unreachable - 4020.7 ms -

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