HOW.IS
?

How is syosetu.com?

Looks fine risk 0/100

Registered 20 years ago, on no blocklists we checked, valid HTTPS, the site answered 403 in 623 ms.

Why

02050100
finecarefulhigh risk
  • ·Nothing in the checks added risk.

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

How syosetu.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
403
623 ms
HTTPS
69 d
left on a Let's Encrypt certificate
Age
20 years
registered 2006-05-20
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records3 record types
A203.137.160.92
NSns-818.awsdns-38.net
ns-1550.awsdns-01.co.uk
ns-447.awsdns-55.com
ns-1166.awsdns-17.org
TXTgoogle-site-verification=DnuhdQasmFOV2HYAq4tD_kP1-P2-hMoxC7DPqW3VTiA
v=spf1 -all
RegistrationeNom, LLC
registrareNom, LLC
registered2006-05-20
expires2027-05-20
last changed2026-05-01
nameserversns-1166.awsdns-17.org
ns-1550.awsdns-01.co.uk
ns-447.awsdns-55.com
ns-818.awsdns-38.net
statusclient delete prohibited
client transfer prohibited
registered 2006-05-20expires 2027-05-20
HTTPS certificate69 days left
validyes
issuerLet's Encrypt
covers*.syosetu.com, syosetu.com
protocolTLSv1.3
issued 2026-10-09expires 2027-01-07
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → syosetu.com
Email authenticationpoor
SPFpass v=spf1 -all
DMARCnone
DKIMnone of 1 common selectors

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

Security scoregrade C · 140/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
15/45missing: CAA Records, DMARC Record, DKIM Presence
Advanced Security
10/25missing: Mail Server Configuration, IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop203.137.165.188Barracuda203.137.165.188UCEPROTECT Level 1203.137.165.188

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=syosetu.com" \ -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=syosetu.com"

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

Watch syosetu.com. 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