HOW.IS
?

How is mozilla.com?

Looks fine risk 0/100

Registered 32 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 133 ms.

Why

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

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

How mozilla.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
133 ms · ends at www.firefox.com
HTTPS
53 d
left on a Google Trust Services certificate
Age
32 years
registered 1994-10-18
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records6 record types
A35.190.14.201
AAAA2600:1901:0:c197::
MX5 alt2.aspmx.l.google.com
5 alt1.aspmx.l.google.com
10 aspmx3.googlemail.com
1 aspmx.l.google.com
NSns1-240.akam.net
ns7-66.akam.net
ns5-65.akam.net
ns4-64.akam.net
TXTplausible-sso-verification=86a4a89d-6956-4af5-a609-df05fa65f043
openai-domain-verification=dv-K4BRwXIccR9ZPEk5YkygkYoA
coursera-domain-verification=Y24czi8G4lghjuEOZbPUZJGZL3ZWCCqS4ZDlH5bLbmda9p5lDgG1Egd0j75H3UyV
atlassian-domain-verification=8xkMty0tOT0eog0PN17DvoBgD4NC/3/j/Tkx6tRZN5Zl15VBEFltqd9CfFxWiGe3
apple-domain-verification=AW6Ub2u78cjUEoTz
status-page-domain-verification=v1vmjp2v89c0
MS=ms53448578
docusign=b3fe0d4f-0830-4d21-8ac4-3247fd53199c
stripe-verification=12da43cd3189cf99e5c3ecdfdae9c97c7d4230aed93a22ae62892f0cee028e0c
docker-verification=2f2414f7-df6b-4bf5-80e4-b7212e54af13
infoblox-domain-mastery=db089a79e7ee978fa4ddfb94a0e9e080ebac58f7507b58a0ad2abecd2e27317ba7
asv=922480dc61f55632a133db2c25597e3d
xp5tz620d79rq5wg8tss9cqj6ync5ffb
intacct-esk=4FED1A6DBF25C0CAE053D606A8C0F840
v=spf1 include:mozilla.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:helpscoutemail.com ~all
google-site-verification=IpSwLqTy1MSoslsauQbp2ohg2A92W2Qq2SAw5QQC5jA
h1-domain-verification=npd53FESN2jo7DQNQvMum8E9zdXKmNNjLZKNUHFVDKEoBYwD
anthropic-domain-verification-bhww58=QIicfKVPKNxTK78KvVLOTg9HY
remote-domain-verification=cf65a23c-16ed-4181-8ee9-2bc2741130d5
_veifelr1ln0sms73xbbdexkuh0n4esh
status-page-domain-verification=66thnl6f725t
knowbe4-site-verification=06f6ae33f35b924850c58ba985731eb7
notion-domain-verification=iFlGX1ER56vtEhhqy0jkEDrJTKztyPXD2BPU4BNYTTG
aocGrHyfAWIi8sU8mTrID9Pj1A
CAA{'type': 'CAA', 'issue': 'amazonaws.com', 'critical': 0}
{'type': 'CAA', 'issue': 'amazon.com', 'critical': 0}
{'type': 'CAA', 'issue': 'amazontrust.com', 'critical': 0}
{'type': 'CAA', 'issue': 'pki.goog', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
{'type': 'CAA', 'iodef': 'mailto:foxsec+caaiodef@mozilla.com', 'critical': 0}
{'type': 'CAA', 'issue': 'awstrust.com', 'critical': 0}
{'type': 'CAA', 'issue': 'sectigo.com', 'critical': 0}
{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0}
{'type': 'CAA', 'issue': 'comodoca.com', 'critical': 0}
RegistrationMarkMonitor Inc.
registrarMarkMonitor Inc.
registered1994-10-18
expires2027-10-17
last changed2026-09-11
ownerMozilla Corporation
nameserversns1-240.akam.net
ns4-64.akam.net
ns5-65.akam.net
ns7-66.akam.net
statusclient delete prohibited
client transfer prohibited
client update prohibited
server delete prohibited
server transfer prohibited
server update prohibited
registered 1994-10-18expires 2027-10-17
HTTPS certificate53 days left
validyes
issuerGoogle Trust Services
coversmozilla.com
protocolTLSv1.3
issued 2026-09-20expires 2026-12-19
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → mozilla.com
Email authenticationexcellent
SPFpass v=spf1 include:mozilla.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:helpscoutemail.com ~all
DMARCpass policy reject
DKIMfound: google, k1, s1, s2

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

Security scoregrade B · 170/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
45/45missing: DKIM Presence
Advanced Security
20/25missing: SOA Record Configuration
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop35.190.14.201Barracuda35.190.14.201UCEPROTECT Level 135.190.14.201

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=mozilla.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=mozilla.com"

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

Watch mozilla.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