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Gridlode
Rank #4,783Updated November 10, 2026

cas.cz

Akademie věd České republiky - Akademie věd České republiky

cas.cz is registered with Gransy s.r.o. since October 6, 1996 (30.1 years). The registration expires on October 29, 2034. The site runs on Google Analytics 4, Google Hosted Libraries, Cookie Consent and 7 other technologies. Its email security grade is F. Its SSL certificate is issued by Hellenic Academic and Research Institutions CA and is valid for 164 more days.

Domain age
30.1 yrs
Technologies
10
Email security
F
SSL days left
164

Registration

RegistrarGransy s.r.o.
RegisteredOctober 6, 1996
ExpiresOctober 29, 2034
UpdatedMay 15, 2025
Statusactive
Name serversacademy.cas.cz, nsa.ces.net, visla.utia.cas.cz
DNSSECSigned

DNS records

TypeValueTTL
A147.231.163.24086400
MXcas-cz.mail.protection.outlook.com 1086400
NSnsa.ces.net86400
NSvisla.utia.cas.cz86400
NSacademy.cas.cz86400
TXTMS=ms1527370486400
TXTPS-1DE9E9D695DD8C6BCB650BF86B69107D861F5A0786400
TXTgoogle-site-verification=vUDwTSfcIbP-SZlB4YtOHK9HptYiG6lYnU2bDgAbgqs86400
TXTv=spf1 ip4:147.231.58.32 ip4:147.231.163.131 include:spf.protection.outlook.com ~all86400
TXTeZQUjdgG4Qz1lrWWUR2cbrxQzAfv6E8v5ZR6ERf7euQqDDSdKQQQ0MMjQLs5ERt6cGUN8tGMy8fMmLeoh4z5Ig==86400

Technology stack

Analytics and advertising IDs

google_analytics:G-ETQEE59TKV

SSL certificate

ValidValid
IssuerGR, GEANT TLS ECC 1, Hellenic Academic and Research Institutions CA
ExpiresApril 23, 2027
Days remaining164
ProtocolTLSv1.3
Namesavcr.cz, cas.cz, www.avcr.cz, www.cas.cz

Email security

FScore 28/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • badNo DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain.
  • warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
  • warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
  • warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
  • warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
  • goodSPF record found.
  • goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
  • good1 MX record(s) found. Mail is handled by Microsoft 365.

Homepage metadata

TitleAkademie věd České republiky - Akademie věd České republiky
DescriptionAkademie věd České republiky, veřejná neuniverzitní výzkumná instituce.
Languagecs
IndexableYes
Word count960

About cas.cz

Who is the registrar of cas.cz?

cas.cz is registered with Gransy s.r.o..

When does cas.cz expire?

The current registration of cas.cz expires on October 29, 2034. It was first registered on October 6, 1996.

What technology does cas.cz use?

We detected 10 technologies on cas.cz, including Google Analytics 4, Google Hosted Libraries, Cookie Consent, Font Awesome, jQuery, jQuery UI.

Does cas.cz protect its email with SPF and DMARC?

cas.cz scores 28/100 (grade F) for email security. No DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.

What are the name servers of cas.cz?

cas.cz uses nsa.ces.net, visla.utia.cas.cz, academy.cas.cz.