dot.bi

cas.cz

SPF only CESNET z.s.p.o Microsoft 365
“cas” in other TLDs Compare
DNS, hosting, email and name analysis are live. Registration data, the home-page probe, the archive lookup and the other-TLD check are being fetched in the background; this page refreshes itself in a few seconds.

Registration

Source: RDAP Not available

Fetching the registry record…

DNS

Source: live resolutionResolved 2026-10-14 06:05 UTC
TypeValue
NSacademy.cas.cz · nsa.ces.net · visla.utia.cas.cz
A147.231.163.240
MX10 cas-cz.mail.protection.outlook.com
TXTgoogle-site-verification=vUDwTSfcIbP-SZlB4YtOHK9HptYiG6lYnU2bDgAbgqs
TXTv=spf1 ip4:147.231.58.32 ip4:147.231.163.131 include:spf.protection.outlook.com ~all
TXTPS-1DE9E9D695DD8C6BCB650BF86B69107D861F5A07
TXTeZQUjdgG4Qz1lrWWUR2cbrxQzAfv6E8v5ZR6ERf7euQqDDSdKQQQ0MMjQLs5ERt6cGUN8tGMy8fMmLeoh4z5Ig==
TXTMS=ms15273704
SOAvisla.utia.cas.cz root.utia.cas.cz serial 2799

Certificates

Source: Certificate Transparency logs
First certificate seen
2026-10-13 21:44 UTC since dot.bi started watching
Last certificate seen
2026-10-14 03:47 UTC
Certificates observed
70
Issuers
Let's Encrypt

Hosting

Source: DNS + Team Cymru
IP
147.231.163.240
Network
AS2852 · CESNET2 - CESNET z.s.p.o., CZ
Provider
CESNET z.s.p.o
Country
CZ (network registration, not server location)
CDN
none detected
IPv6
no

Web

Source: dot.bi probe

Probing the home page…

Email

Source: DNS

SPF only SPF is published but there is no DMARC policy.

Provider
Microsoft 365
SPF
present all: softfail
DMARC
missing
DKIM
not found common selectors only

Age

Source: Wayback Machine
First capture
looking up…
Years archived
—
Registry created
—
In dot.bi since
2026-10-13 · Majestic Million

Name analysis

dot.bi dictionaries EN · FR
Words
cas FR single
Length
3 characters
Digits · hyphens
none · none
Readability
high
Brandability
90 / 100 heuristic

Same name, other TLDs

DNS check, cached a day

Checking the same name on other TLDs…

History observed by dot.bi

Since 2026-10-130 events