dot.bi

certain.jp

SPF only SAKURA Internet certain.jp
“certain” 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 2026-10-16 02:16 UTC
TypeValue
NSns1.dns.ne.jp · ns2.dns.ne.jp
A210.224.185.14
AAAA2403:3a00:201:18:210:224:185:14
MX10 certain.jp
TXTv=spf1 a:www2404.sakura.ne.jp mx ~all
SOAmaster.dns.ne.jp tech.sakura.ad.jp serial 2026041318

Certificates

Source: Certificate Transparency logs

No certificate for this domain has passed through the logs dot.bi follows since it started watching. Older certificates are not back-filled.

Hosting

Source: DNS + Team Cymru
IP
210.224.185.14
Network
AS9371 · SAKURA-C - SAKURA Internet Inc., JP
Provider
SAKURA Internet
Country
JP (network registration, not server location)
CDN
none detected
IPv6
yes

Web

Source: dot.bi probe

Probing the home page…

Email

Source: DNS

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

Provider
certain.jp
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
2026-10-16 · Visitor lookup

Name analysis

dot.bi dictionaries EN · FR
Words
certain EN single
Length
7 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 2026-10-161 events
First observed by dot.bi · source: lookup