How is doi.org?

Looks fine risk 0/100

Registered 28 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 79 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

79 ms · ends at www.doi.org

HTTPS

48 d

left on a Google Trust Services certificate

Age

28 years

registered 1999-01-19

Blocklists

listings across 5 lists

Everything we looked at

DNS records5 record types

A	104.26.5.132 172.67.69.3 104.26.4.132
AAAA	2606:4700:20::681a:484 2606:4700:20::681a:584 2606:4700:20::ac43:4503
MX	10 mx.zoho.eu 20 mx2.zoho.eu 50 mx3.zoho.eu
NS	josh.ns.cloudflare.com zita.ns.cloudflare.com
TXT	zoho-verification=zb37490279.zmverify.zoho.eu v=spf1 include:zohomail.eu include:cnri.net include:amazonses.com ~all

RegistrationCloudflare, Inc.

registrar	Cloudflare, Inc.
registered	1999-01-19
expires	2035-01-19
last changed	2026-08-12
owner	DATA REDACTED
nameservers	josh.ns.cloudflare.com zita.ns.cloudflare.com
status	client transfer prohibited

registered 1999-01-19expires 2035-01-19

HTTPS certificate48 days left

valid	yes
issuer	Google Trust Services
covers	doi.org, *.doi.org
protocol	TLSv1.3

issued 2026-09-14expires 2026-12-13

DNSSECsecure

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

. → org → doi.org

Email authenticationgood

SPF	pass `v=spf1 include:zohomail.eu include:cnri.net include:amazonses.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 · 160/205

Basic Security

10/40missing: DNSSEC Enabled, Nameserver Diversity

Record Security

30/45missing: CAA Records, DKIM Presence

Advanced Security

25/25

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 11 lookups

SURBL MultidomainURIBL MultidomainSpamCop104.26.5.132Barracuda104.26.5.132UCEPROTECT Level 1104.26.5.132SpamCop172.67.69.3Barracuda172.67.69.3UCEPROTECT Level 1172.67.69.3SpamCop104.26.4.132Barracuda104.26.4.132UCEPROTECT Level 1104.26.4.132

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=doi.org" \ -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=doi.org"

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

Watch doi.org. 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