How is britannica.com?

Looks fine risk 0/100

Registered 31 years ago, on no blocklists we checked, valid HTTPS, the site answered 403 in 54 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

403

54 ms

HTTPS

90 d

left on a Amazon certificate

Age

31 years

registered 1995-06-14

Blocklists

listings across 5 lists

Everything we looked at

DNS records3 record types

A	34.238.87.25 100.57.27.235
NS	ns-829.awsdns-39.net ns-243.awsdns-30.com ns-1567.awsdns-03.co.uk ns-1050.awsdns-03.org
TXT	google-site-verification=k10aAIZQu5EjFbrh-ABW-9q9phYyigXf-211snaxdg4 v=spf1 include:_spf.google.com exists:%{i}._spf.sparkpostmail.com ~all google-site-verification=iCsMOBxTnqow6GNvW0LQ292qIMjLqMXwpQ6tOfIZgY4 facebook-domain-verification=yx5oj1072bsq69m7blcnrkktdu6h4h ca3-5187b5f7e89c48ce9ac11ac4ad4ba681 ca3-34d513380a624c15b1894f20512d2ca8 google-site-verification=3qlcdPLjaLxZmTfGmv2-7hXoRu7HWw7Sx--a2KgIoN0

RegistrationCSC Corporate Domains, Inc.

registrar	CSC Corporate Domains, Inc.
registered	1995-06-14
expires	2027-06-13
last changed	2026-06-09
owner	Encyclopaedia Britannica, Inc.
nameservers	ns-1050.awsdns-03.org ns-1567.awsdns-03.co.uk ns-243.awsdns-30.com ns-829.awsdns-39.net
status	client transfer prohibited

registered 1995-06-14expires 2027-06-13

HTTPS certificate90 days left

valid	yes
issuer	Amazon
covers	*.britannica.com, britannica.com
protocol	TLSv1.2

issued 2026-07-12expires 2027-01-25

DNSSECinsecure

Domain is not signed with DNSSEC

. → com → britannica.com

Email authenticationfair

SPF	pass `v=spf1 include:_spf.google.com exists:%{i}._spf.sparkpostmail.com ~all`
DMARC	pass policy reject
DKIM	none of 1 common selectors

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

Security scoregrade B · 155/205

Basic Security

20/40missing: DNSSEC Enabled

Record Security

30/45missing: CAA Records, DKIM Presence

Advanced Security

10/25missing: Mail Server Configuration, IPv6 Support

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 8 lookups

SURBL MultidomainURIBL MultidomainSpamCop34.238.87.25Barracuda34.238.87.25UCEPROTECT Level 134.238.87.25SpamCop100.57.27.235Barracuda100.57.27.235UCEPROTECT Level 1100.57.27.235

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=britannica.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=britannica.com"

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

Watch britannica.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