How is tenki.jp?

Looks fine risk 0/100

Registered 26 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 233 ms.

Why

02050100

finecarefulhigh risk

·Nothing in the checks added risk.

Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.

Site

200

233 ms

HTTPS

104 d

left on a Amazon certificate

Age

26 years

registered 2001-03-26

Blocklists

listings across 5 lists

Everything we looked at

DNS records5 record types

A	18.165.98.122 18.165.98.117 18.165.98.69 18.165.98.129
MX	10 silverzebra7.sakura.ne.jp
NS	ns-1374.awsdns-43.org ns-1996.awsdns-57.co.uk ns-966.awsdns-56.net ns-209.awsdns-26.com
TXT	google-site-verification=ldovc8JtIs-HjvFTp3XtiS2jYJ4RajXWeOaJ6uT3ikU globalsign-domain-verification=82A685CCD79732D4EA6A86A47807AF7D v=spf1 include:silverzebra7.sakura.ne.jp ~all
CAA	{'type': 'CAA', 'issue': 'amazon.com', 'critical': 0} {'type': 'CAA', 'issue': 'globalsign.com', 'critical': 0} {'type': 'CAA', 'critical': 0, 'issuewild': 'amazon.com'} {'type': 'CAA', 'critical': 0, 'issuewild': 'globalsign.com'} {'type': 'CAA', 'issue': 'digicert.com;cansignhttpexchanges=yes', 'critical': 0} {'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}

Registrationregistrar not reported

registered	2001-03-26
expires	2027-03-31
last changed	2026-04-01
owner	Japan Weather Association
nameservers	ns-1374.awsdns-43.org ns-209.awsdns-26.com ns-966.awsdns-56.net ns-1996.awsdns-57.co.uk
status	Active

registered 2001-03-26expires 2027-03-31

HTTPS certificate104 days left

valid	yes
issuer	Amazon
covers	*.tenki.jp, tenki.jp
protocol	TLSv1.3

issued 2026-01-12expires 2027-02-10

DNSSECinsecure

Domain is not signed with DNSSEC

. → jp → tenki.jp

Email authenticationgood

SPF	pass `v=spf1 include:silverzebra7.sakura.ne.jp ~all`
DMARC	warning policy none
DKIM	found: s1, s2

Whether mail claiming to be from this domain can be checked as genuine.

Security scoregrade B · 168/205

Basic Security

20/40missing: DNSSEC Enabled

Record Security

38/45missing: DMARC Record, DKIM Presence

Advanced Security

15/25missing: Mail Server Configuration, IPv6 Support

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 14 lookups

SURBL MultidomainURIBL MultidomainSpamCop18.165.98.117Barracuda18.165.98.117UCEPROTECT Level 118.165.98.117SpamCop18.165.98.129Barracuda18.165.98.129UCEPROTECT Level 118.165.98.129SpamCop18.165.98.69Barracuda18.165.98.69UCEPROTECT Level 118.165.98.69SpamCop18.165.98.122Barracuda18.165.98.122UCEPROTECT Level 118.165.98.122

Green: clean. Red: listed. Grey: the list did not answer.

Ask it yourself

Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.

curl "https://how.is/v1/domain/trust?domain=tenki.jp" \ -H "Authorization: Bearer $HOWIS_KEY" # or pay per call in USDC (x402), no key: the 402 tells your agent the price curl -i "https://how.is/v1/domain/profile?domain=tenki.jp"

MCP: add https://how.is/mcp to Claude, Codex or Cursor (one-line install) and ask for domain_trust on tenki.jp. Reference: /llms.txt.

Watch tenki.jp. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.

Watch — $1 / 30 days