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Total

DNS

Email

Security

Network

100

Availability

Domainceskatelevize.cz

IPv41

IPv60

MX records2

StatusActive

Domain technical report

Česká televize

ceskatelevize.cz

Sledujte ČT on-line. Zpravodajství, publicistika, sport, počasí, pořady od A do Z. Programy ČT1, ČT2, ČT24, ČT sport a videoarchiv iVysílání. Česká veřejnoprávní televize.

Generated: 2026-08-09T09:58:46-05:00 · Cached result

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IPv41

IPv60

MX2

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

2 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

125 day(s) remaining.

✓

Certificate lifetime10 / 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 DNS0 / 30 pts · Network

PTR not detected.

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/1.1 200 OK

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

85.239.69.9

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

20 mail4.czech-tv.cz.
10 mail3.czech-tv.cz.

TXT

8 record(s)

"MS=ms49398127"
"v=spf1 a mx ip4:85.236.69.30 ip4:85.239.66.10 ip4:85.239.66.51 ip4:85.239.68.68 ip4:85.239.69.56 ip4:207.154.194.238 ip4:85.239.64.55 mx:mail3.czech-tv.cz mx:mail4.czech-tv.cz ~all"
"MOSYQS70XBPINVMQLHI2ALE3M532NU2X15BJ3MN0"
"google-site-verification=LBBE5gCE4XN2R0EjFexxqAZape8rBnWJGApm_oTaVEY"
"google-site-verification=JRZrcqhcp09xCPka-nJFLInl4dmXM3FS_M8x2eMK9XQ"
"miro-verification=c5f67960b9972dfd58095f23c5698997046dccc7"
"asv=f6a8261aef3edc4b0d0acb111c26160c"
"apple-domain-verification=m2Qs3HNWu2MghoIa"

NS

2 record(s)

ceskatelevize2.ns.nic.cz.
ceskatelevize1.ns.nic.cz.

SOA

1 record(s)

ceskatelevize1.ns.nic.cz. systemacivt.czech-tv.cz. 2025091926 14400 7200 1209600 3600

CAA

0 record(s)

—

Not configured

DS

1 record(s)

26239 13 2 D2CB847E785C7BCD8EE5594EE5EF082F35A20BB1A795EBEAD1C13454 61CDE07E

DNSKEY

2 record(s)

257 3 13 y+3U42El5hi0B6bVHbwTpekZB+48mtnrJX5QUL3gpjDucKGX2a1Ipfoy 9wpDiF6m93E4paUE0HO1SN9/9HSYHw==
256 3 13 TYL1rLC000f7kx8Ipo1sEQ0cYl+/EaRiqndygDiZiVnDDx/ihOdtA82x 84kdHkfffun7mUBqbV05zdFa5oZswA==

RRSIG

1 record(s)

DNSKEY 13 2 3600 20260822214631 20260808201631 26239 ceskatelevize.cz. icqyrIt/LZ4aFl8h2eklYQuuSqwNW46WWnpBGpLCMVqPcnJdzBo8Ui8x KhHOH3rwK33WNHuNy+R4wKEGPfzTDw==

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

Configured

v=spf1 a mx ip4:85.236.69.30 ip4:85.239.66.10 ip4:85.239.66.51 ip4:85.239.68.68 ip4:85.239.69.56 ip4:207.154.194.238 ip4:85.239.64.55 mx:mail3.czech-tv.cz mx:mail4.czech-tv.cz ~all

DMARC

Configured

v=DMARC1;p=reject;sp=reject;adkim=s;aspf=r;fo=1;rf=afrf;rua=mailto:dmarc@ceskatelevize.cz;ruf=mailto:dmarc@ceskatelevize.cz;pct=100;ri=86400

DKIM

Selector default

v=DKIM1; k=rsa; s=email; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDMedy8pCgfuardhPvRkcCvONFTOoQX9xNjAmA1PgGWs7DMcMjLfjIi7gh0t1vj3QZwl5rWwrmGNvYVKqIy7HayXfQkNAD4bdYjQKr4izn0ylPEaQVnYONpHR3GqE8aGHnNOHO4dZS5nm2UjJRIXNJdyDmHQT4qwjzmqFTbcPazhQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Česká televize

Description

Sledujte ČT on-line. Zpravodajství, publicistika, sport, počasí, pořady od A do Z. Programy ČT1, ČT2, ČT24, ČT sport a videoarchiv iVysílání. Česká veřejnoprávní televize.

Final URL

https://www.ceskatelevize.cz/

HTTP status

200

HTTP

Status

HTTP/1.1 200 OK

Final URL

https://www.ceskatelevize.cz/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

DigiCert Inc

*.ceskatelevize.cz

Valid from

2026-05-27T19:00:00-05:00

Valid until

2026-12-12T17:59:59-06:00

Days remaining

125

Protocol

TLSv1.2

Cipher

ECDHE-RSA-AES128-GCM-SHA256

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

85.239.69.9

102,01 ms

Cloudflare

1.1.1.1

85.239.69.9

73,65 ms

Quad9

9.9.9.9

85.239.69.9

147,02 ms

OpenDNS

208.67.222.222

85.239.69.9

358,55 ms

AdGuard

94.140.14.14

85.239.69.9

539,34 ms

IP, geolocation and ASNAssociated network information

85.239.69.9

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

mail4.czech-tv.cz

Port 25: Closed/unreachable - 28.8 ms - 
Port 465: Closed/unreachable - 4020.9 ms - 
Port 587: Closed/unreachable - 4049 ms -

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