cosimo.jp is registered with whois.jprs.jp. We couldn't read an SSL certificate for it when we last analysed it.
What security vendors and the WOT community say about this domain.
1 of 5 protections set up
No SPF record: any server can send mail that claims to come from this domain.
—Signs outgoing mail so receivers can verify it.
selector s1._domainkeyPolicy is “none”: spoofed mail is reported but not blocked.
v=DMARC1; p=none;Forces encrypted delivery between mail servers.
—Shows the brand logo in supporting inboxes. Optional; needs DMARC enforcement.
—Read from the domain's public DNS records.
What loads and tracks visitors when the homepage opens.
Running a full browser scan of the homepage… This takes about a minute.
We couldn't read an SSL certificate on port 443 when we last analysed cosimo.jp. Refresh the analysis to check again.
Internet standards that make a site faster and safer.
Is cosimo.jp’s name taken on other extensions?
| Host | Mail server | TTL |
|---|---|---|
| cosimo.jp | 1 smtp.google.com | 3600 |
| cosimo.jp | 15 7frpbpyds2fbwcbqjdxjs2zuzgusvqm62atjmjimmrq52wvmmn6q.mx-verification.google.com | 3600 |
| Host | Name server | TTL |
|---|---|---|
| cosimo.jp | 01.dnsv.jp | 86400 |
| cosimo.jp | 02.dnsv.jp | 86400 |
| cosimo.jp | 03.dnsv.jp | 86400 |
| cosimo.jp | 04.dnsv.jp | 86400 |
| Host | Start of authority | TTL |
|---|---|---|
| cosimo.jp | 01.dnsv.jp hostmaster.dnsv.jp 1786458159 3600 900 604800 300 | 86400 |
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Reviews are from CubDomain users and are separate from the security verdicts above.
Common questions, answered from this report's data.
cosimo.jp has no community safety rating yet. We couldn't read an SSL certificate on it when we last analysed it. See Security →
cosimo.jp is registered through whois.jprs.jp. The owner's details are hidden by a privacy service in the public WHOIS record. See WHOIS →
Raw registry data for cosimo.jp. May be redacted by privacy services.
[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]
Domain Information: [ドメイン情報]
[Domain Name] COSIMO.JP
[登録者名] （登録者からの申請により非表示）
詳細は→https://jprs.jp/about/dom-rule/whois-concealment/
[Registrant] (Not displayed by registrant's request)
For details -> https://jprs.jp/about/dom-rule/whois-concealment/ (only in Japanese)
[Name Server] 01.dnsv.jp
[Name Server] 02.dnsv.jp
[Name Server] 03.dnsv.jp
[Name Server] 04.dnsv.jp
[Signing Key]
[登録年月日] 2024/05/31
[有効期限] 2027/05/31
[状態] Active
[最終更新] 2026/08/11 23:22:44 (JST)
Contact Information: [公開連絡窓口]
[名前] Whois情報公開代行サービス by お名前.com
[Name] Whois Privacy Protection Service by onamae.com
[Email] [email protected]
[Web Page]
[郵便番号]
[住所]
[Postal Address]
[電話番号] +81.354562560
[FAX番号]The first response from http://www.cosimo.jp, before any redirect: caching, server and policy headers.
Four timed TCP connections to port 443 from CubDomain's servers.
CubDomain is not affiliated with cosimo.jp. Data is collected independently from public sources and some figures are estimates, provided for information only.
Found in public certificate transparency logs.
Searching the certificate transparency logs… This can take up to a minute.
Spam and malware blocklists for the site's IP and mail servers.
When the site first appeared, and what has changed since.
No changes seen since we started recording on 26 Oct 2026.