How is suumo.jp?

Looks fine risk 0/100

Registered 6 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 932 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

932 ms

HTTPS

148 d

left on a DigiCert Inc certificate

Age

6 years

registered 2021-04-02

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	160.17.3.13
MX	10 mx.x.recruit.co.jp
NS	ns3.x.recruit.co.jp ns1.x.recruit.co.jp ns2.x.recruit.co.jp
TXT	google-site-verification=EwBA1TRVwGz9n7tMR-RhcqFn-LK4qxf0RqTf76e-DLE v=spf1 include:spf01.suumo.com include:spf02.suumo.com include:spf-bma.rec.mpme.jp include:spf.tricorn.net include:crmstyle.com include:spf.betrend.com include:_spf.salesforce.com ~all

Registrationregistrar not reported

registered	2021-04-02
expires	2027-04-30
last changed	2026-05-01
owner	RECRUIT CO., LTD.
nameservers	ns1.x.recruit.co.jp ns2.x.recruit.co.jp ns3.x.recruit.co.jp
status	Active

registered 2021-04-02expires 2027-04-30

HTTPS certificate148 days left

valid	yes
issuer	DigiCert Inc
covers	suumo.jp
protocol	TLSv1.2

issued 2026-09-09expires 2027-03-26

DNSSECinsecure

Domain is not signed with DNSSEC

. → jp → suumo.jp

Email authenticationgood

SPF	pass `v=spf1 include:spf01.suumo.com include:spf02.suumo.com include:spf-bma.rec.mpme.jp include:spf.tricorn.net include:crmstyle.com include:spf.betrend.com include:_spf.salesforce.com ~all`
DMARC	pass policy quarantine
DKIM	none of 1 common selectors

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

Security scoregrade B · 150/205

Basic Security

10/40missing: DNSSEC Enabled, Nameserver Diversity

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 · 5 lookups

SURBL MultidomainURIBL MultidomainSpamCop160.17.3.13Barracuda160.17.3.13UCEPROTECT Level 1160.17.3.13

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=suumo.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=suumo.jp"

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

Watch suumo.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