HOW.IS
?

How is one.one?

Looks fine risk 0/100

Registered 11 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 959 ms.

Why

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

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

How one.one looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
959 ms · ends at www.one.com
HTTPS
74 d
left on a Let's Encrypt certificate
Age
11 years
registered 2015-05-20
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records3 record types
A195.47.247.8
195.47.247.9
AAAA2a02:2350:6::fb15:59af
NSauth.g1-dns.com
auth.g1-dns.one
RegistrationOne.com A/S
registrarOne.com A/S
registered2015-05-20
expires2027-05-20
last changed2026-05-24
nameserversauth.g1-dns.com
auth.g1-dns.one
statusclient delete prohibited
client transfer prohibited
client update prohibited
registered 2015-05-20expires 2027-05-20
HTTPS certificate74 days left
validyes
issuerLet's Encrypt
coversone.one
protocolTLSv1.3
issued 2026-10-12expires 2027-01-10
DNSSECsecure

Domain is properly signed — chain validated by an independent validating resolver

. → one → one.one
Email authenticationpoor
SPFnone
DMARCnone
DKIMnone of 1 common selectors

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

Security scoregrade C · 125/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
0/45missing: CAA Records, SPF Record, DMARC Record, DKIM Presence
Advanced Security
10/25missing: Mail Server Configuration, SOA Record Configuration
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 8 lookups
SURBL MultidomainURIBL MultidomainSpamCop195.47.247.8Barracuda195.47.247.8UCEPROTECT Level 1195.47.247.8SpamCop195.47.247.9Barracuda195.47.247.9UCEPROTECT Level 1195.47.247.9

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=one.one" \ -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=one.one"

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

Watch one.one. 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