How is kakuyomu.jp?

Looks fine risk 5/100

Registered 11 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 1526 ms.

Why

02050100

finecarefulhigh risk

+5Registration expires in 0 days.

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

1526 ms

HTTPS

51 d

left on a Amazon certificate

Age

11 years

registered 2015-10-02

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	13.227.65.69 13.227.65.35 13.227.65.39 13.227.65.113
MX	10 mailinbound.hatena.ne.jp
NS	ns-1802.awsdns-33.co.uk ns-1435.awsdns-51.org ns-457.awsdns-57.com ns-971.awsdns-57.net
TXT	google-site-verification=LXWmZ0kV7e8yNRdGAlbkmAh4T143VWRaDvu7XzRrsos v=spf1 include:mdmouse.maildealer.jp include:spf-bma.mpme.jp include:sendgrid.net ~all

Registrationregistrar not reported

registered	2015-10-02
expires	2026-10-31
last changed	2025-11-01
owner	KADOKAWA CORPORATION
nameservers	ns-1435.awsdns-51.org ns-1802.awsdns-33.co.uk ns-457.awsdns-57.com ns-971.awsdns-57.net
status	Active

registered 2015-10-02expires 2026-10-31

HTTPS certificate51 days left

valid	yes
issuer	Amazon
covers	kakuyomu.jp
protocol	TLSv1.3

issued 2026-06-06expires 2026-12-20

DNSSECinsecure

Domain is not signed with DNSSEC

. → jp → kakuyomu.jp

Email authenticationexcellent

SPF	pass `v=spf1 include:mdmouse.maildealer.jp include:spf-bma.mpme.jp include:sendgrid.net ~all`
DMARC	pass policy quarantine
DKIM	found: s1, s2

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

Security scoregrade B · 160/205

Basic Security

20/40missing: DNSSEC Enabled

Record Security

30/45missing: CAA Records, 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 MultidomainSpamCop13.227.65.35Barracuda13.227.65.35UCEPROTECT Level 113.227.65.35SpamCop13.227.65.113Barracuda13.227.65.113UCEPROTECT Level 113.227.65.113SpamCop13.227.65.69Barracuda13.227.65.69UCEPROTECT Level 113.227.65.69SpamCop13.227.65.39Barracuda13.227.65.39UCEPROTECT Level 113.227.65.39

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=kakuyomu.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=kakuyomu.jp"

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

Watch kakuyomu.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