Domain technical report
cihar.com - Michal Čihař
cihar.com
Michal Čihař's website
IPv41
IPv61
MX1
NS2
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89
Total
100
DNS
70
Email
84
Security
85
Network
100
Availability
Domaincihar.com
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
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 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.
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
56 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers19 / 35 pts · Security
5 of 9 evaluated headers detected.
PTR reverse DNS30 / 30 pts · Network
PTR: 252.128/25.107.78.77.in-addr.arpa
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)77.78.107.252
AAAA
1 record(s)2001:1528:136:dead:beef:4242:0:30
CNAME
0 record(s)—
Not configured
MX
1 record(s)10 mail.cihar.com.
TXT
3 record(s)"facebook-domain-verification=zusj0qs0ud5vmk20uo9c8ypuy95lyy" "google-site-verification=MMEu4KD3D2jLqHm-EkEizkdmw85brebSQnS-QhaxVjM" "v=spf1 a mx a:home.cihar.com a:mort.cihar.com -all"
NS
2 record(s)nicole.ns.cloudflare.com. coby.ns.cloudflare.com.
SOA
1 record(s)coby.ns.cloudflare.com. dns.cloudflare.com. 2411284265 10000 2400 604800 1800
CAA
11 record(s)0 issuewild "ssl.com" 0 issuewild "letsencrypt.org" 0 issue "comodoca.com" 0 issuewild "comodoca.com" 0 issuewild "pki.goog; cansignhttpexchanges=yes" 0 iodef "mailto:michal@cihar.com" 0 issuewild "digicert.com; cansignhttpexchanges=yes" 0 issue "ssl.com" 0 issue "digicert.com; cansignhttpexchanges=yes" 0 issue "pki.goog; cansignhttpexchanges=yes" 0 issue "letsencrypt.org"
DS
1 record(s)2371 13 2 8980B5A370130DF3E4FD1FFA4968829F9A7A3FBF0CC1480742A2B6A1 46AD6166
DNSKEY
2 record(s)256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA== 257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
RRSIG
4 record(s)NS 13 2 86400 20260810170346 20260808150346 34505 cihar.com. Y4vdI9G7jb7qv72Ox59Hs9IutqXNUj/InHvVSb3WdC5had0s8nDH5AAn bHGbIdclFeoJasrTKtk6RTA2pbmkug== TXT 13 2 300 20260810170345 20260808150345 34505 cihar.com. 41uIjYz54KRjITDRlNdt3PztbfjpSdSE2lqo9RLbEuQ4GWWZDraDzFps 7DNkNOMLOun18h1IyDIet1iB8oKIRQ== DS 13 2 86400 20260813023743 20260806012743 41446 com. RkjjhazYW7+35Jxm2ucuxehDTmZjTA8jlkgnK/lkKwYSgdE2hZ9drfD2 MdXcGMniokkEn7u5COEXVq78zRIyUw== CAA 13 2 300 20260810170346 20260808150346 34505 cihar.com. nxgfLXAUSSKIQBghz8MwmOz05qeDMFim8bS5Acx2ai78hb9h2QpaA7P9 POxxv6ZGK05C4W4YMXWnwNlciXjsRw==
NSEC
1 record(s)\000.cihar.com. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI 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
Configuredv=spf1 a mx a:home.cihar.com a:mort.cihar.com -all
DMARC
Configuredv=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; pct=100; rua=mailto:5d45ee82d0bb41f4b41d67ca257ea781@dmarc-reports.cloudflare.net;
DKIM
Not found—
Not configured
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
cihar.com
- Michal Čihař
Description
Michal Čihař's website
Final URL
https://cihar.com/
HTTP status
200
HTTP
Status
HTTP/2 200
Final URL
https://cihar.com/
Version
3
Server
nginx
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
Let's Encrypt
CN
cihar.com
Valid from
2026-07-07T11:02:52-05:00
Valid until
2026-10-05T11:02:51-05:00
Days remaining
56
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
5 activeHSTSImplemented
Content Security PolicyNot detected
X-Content-Type-OptionsImplemented
X-Frame-OptionsImplemented
Referrer PolicyImplemented
Permissions PolicyNot detected
Cross-Origin-Opener-PolicyImplemented
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
8.8.8.877.78.107.252
52,17 ms
Cloudflare
1.1.1.177.78.107.252
27,90 ms
Quad9
9.9.9.977.78.107.252
39,43 ms
OpenDNS
208.67.222.22277.78.107.252
39,86 ms
AdGuard
94.140.14.1477.78.107.252
75,52 ms
IP, geolocation and ASNAssociated network information
77.78.107.252
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
mail.cihar.com
Port 25: Closed/unreachable - 3.6 ms - Port 465: Closed/unreachable - 123.5 ms - Port 587: Closed/unreachable - 119.6 ms - 220 mail.cihar.com ESMTP Exim 4.96 Sun, 09 Aug 2026 18:03:49 +0200