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Total

DNS

Email

Security

Network

100

Availability

Domainrozhlas.cz

IPv41

IPv60

MX records2

StatusActive

Domain technical report

Portál Českého rozhlasu

rozhlas.cz

Nejrychlejší zpravodajství a vysílání online. Stanice, program, podcasty, nové rozhovory, rozhlasové hry a audioknihy.

Generated: 2026-08-10T04:25:50-05:00 · Cached result

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IPv41

IPv60

MX2

NS3

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

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

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 headers16 / 35 pts · Security

4 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: 85-207-4-66.static.bluetone.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/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)

85.207.4.66

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

20 ddei2.cro.cz.
10 ddei1.cro.cz.

TXT

5 record(s)

"MS=10171CD7318B2FD0D2952E0634A7BAD3C70CFEBE"
"facebook-domain-verification=jal5xvmg1m8fbdf00ly03v17rmv3h4"
"v=spf1 mx include:spf.cro.cz include:sparkpostmail.com -all"
"MS=ms40456600"
"google-site-verification=nyl_ZCszZA_G183G43xtQAQev12TmNS5mxyV0DzWfjQ"

NS

3 record(s)

ns2.cro.cz.
nsa.ces.net.
ns1.cro.cz.

SOA

1 record(s)

ns1.cro.cz. domeny.rozhlas.cz. 2026072504 10800 3600 2419200 3600

CAA

0 record(s)

—

Not configured

DS

1 record(s)

14149 13 2 69A3F6B804C1B82909043FEA2B812B9BCE63B02E733232395EDDF515 B6E941ED

DNSKEY

1 record(s)

257 3 13 wvPrq2Wd3GSWMzYDIAB1WowNfcJqnCw/af5oJQ72qXJItgy4EzCEQal2 2MuhGVym2yosJaczwVkrwRU2be4qJg==

RRSIG

9 record(s)

DNSKEY 13 2 600 20260901130047 20260802121150 14149 rozhlas.cz. p1dd+jdYVdegPLl7NSgpvZ0QK6FsYebqPN/XCbty0utecj6xAjBr63Rf nLx1Y1GLRoBTNeVgGQ/KDtiHrCETAA==
SOA 13 2 300 20260909075849 20260810065849 14149 rozhlas.cz. GILDCneExH/TdGGitavzLpLLEU7+1sCCscW1b8QVSk5N9l2DWQF2RknY lZ1xBuJ/25dIgNvuQuzYMWL02C6DVA==
TXT 13 2 300 20260904103727 20260805101904 14149 rozhlas.cz. OJ/+T3ltm943ESIHxIY6GvyH863k1Y+7nQFqKMRExofzdPe8ux12TdRZ MsQJvnLZJqXIxEW8PJXYxAZzviCkVg==
MX 13 2 300 20260820001111 20260720231252 14149 rozhlas.cz. lcZtY8FEQlcPOuRzlr4tX/hxgkKupRju2y1A4LVt4tHznrPOJUdYR+cY h+ZnOGg0b6eDMcJovqPNDPVHo8V67g==
NS 13 2 300 20260823135717 20260724132745 14149 rozhlas.cz. Jub5TbecRDAO/aTuto9zPXynSw4o78ajnd+Wmp8PdR8iOYkrnVFBG6I5 t5qmgWuI/PnrFL+fh94/nrVFyksXQg==
A 13 2 300 20260907024758 20260808015320 14149 rozhlas.cz. Rgmo16n0GjWzKXuJ+Xi3+zrJ5j1QVFeA3Ywhic0JnJn8uNZCOEmvHPHG TiIyDJr6ZFD4bOgJtT0fk4z4Pc1sCg==
DS 13 2 3600 20260823054724 20260809041724 5166 cz. XiztLr7jN0FcwHQfNCrNIKHKZ3SF9Cjaz6oW6qhSSVuTcLDNZe0sSqLj f1l/zTTGbGwLdfnnwDMBa9467qjaDQ==
TYPE65534 13 2 0 20260820112405 20260721111559 14149 rozhlas.cz. uVFRQuBXOiJ30mM/b6wrpQIXOZBqH1oHPmBaERRzmpt5ev/oMRBbPqdn XY+Eys4xr7FZMRtduCxg/YAoF8NFMA==
NSEC3PARAM 13 2 0 20260907162930 20260808161142 14149 rozhlas.cz. NVsRqOwUkY6O9y8N7ggAuzcaczHoXrEQKzjJtre48nhHc8RsZQwB250u wAZgwjgXEeL6q/Fokiw3jE/rHwoaKA==

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 mx include:spf.cro.cz include:sparkpostmail.com -all

DMARC

Configured

v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-reports@rozhlas.cz

DKIM

Selector mail

v=DKIM1; h=sha256; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxs4zEqppwsil2jzVeJVtTh7puQ9qE+sV96ssBLO7rmI9W+w4MwiBN9YWr966PAHnkI+Thg6OZbnB9tV5Q1eUqIYcrXWZ8POjF3/hbNjSGmjOom72iet324du1dLB8acn2BritY7pcFNz09s2kY9727COhozCBLTBJxvRFQ5safhCocXlnEf8U4mrywMPTjQDwQeNUVykhsb42o16WAMTnhri+FCj6dEQvnoXH++XpDKfzZEW8o1QlRZGBqD2TCiEi0TgvcY5ZFjisG+tnBYOVVAHJcdbqL3NvFvHEO7ScpcUwnoh8hi/8/EzRMJ/AstzGJSt/RtMoo/JJXgO9J3OpwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Portál Českého rozhlasu

Description

Nejrychlejší zpravodajství a vysílání online. Stanice, program, podcasty, nové rozhovory, rozhlasové hry a audioknihy.

Final URL

https://portal.rozhlas.cz/

HTTP status

200

HTTP

Status

HTTP/1.1 200 OK

Final URL

https://portal.rozhlas.cz/

Version

Server

nginx

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

DigiCert Inc

*.rozhlas.cz

Valid from

2026-05-28T19:00:00-05:00

Valid until

2026-12-13T17:59:59-06:00

Days remaining

125

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

4 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

—

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

85.207.4.66

280,82 ms

Cloudflare

1.1.1.1

85.207.4.66

281,10 ms

Quad9

9.9.9.9

85.207.4.66

308,62 ms

OpenDNS

208.67.222.222

85.207.4.66

653,17 ms

AdGuard

94.140.14.14

85.207.4.66

449,32 ms

IP, geolocation and ASNAssociated network information

85.207.4.66

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

ddei2.cro.cz

Port 25: Closed/unreachable - 143 ms - 
Port 465: Closed/unreachable - 4172.8 ms - 
Port 587: Closed/unreachable - 4019.3 ms -

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