How is mozilla.net?

Be careful risk 20/100

Registered 29 years ago, no valid HTTPS certificate, the site did not answer (OSError).

Why

02050100

finecarefulhigh risk

+20No valid HTTPS certificate.

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

Site

down

OSError

HTTPS

invalid

Could not resolve host (ENODATA)

Age

29 years

registered 1998-01-31

Blocklists

listings across 2 lists

Everything we looked at

DNS records4 record types

MX	5 alt2.aspmx.l.google.com 10 alt4.aspmx.l.google.com 10 alt3.aspmx.l.google.com 5 alt1.aspmx.l.google.com 1 aspmx.l.google.com
NS	ns5-65.akam.net ns1-240.akam.net ns4-64.akam.net ns7-66.akam.net
TXT	v=spf1 include:_spf.mozilla.com ~all google-site-verification=f3eAyJobWKjb2OxH2ZLdp44_Rt6wrk5yAg2jiE99ExM google-site-verification=PFugIdWufVHs28w5mr_gORsgu7RZr9En5EeuBvOGOxI _bbrkqmphbarjmnnwgj4ozxxe57qzw3w
CAA	{'type': 'CAA', 'iodef': 'mailto:foxsec+caaiodef@mozilla.com', 'critical': 0} {'type': 'CAA', 'critical': 0, 'issuewild': 'ssl.com'} {'type': 'CAA', 'issue': 'digicert.com', 'critical': 0} {'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0} {'type': 'CAA', 'issue': 'ssl.com', 'critical': 0} {'type': 'CAA', 'issue': 'pki.goog', 'critical': 0} {'type': 'CAA', 'issue': 'amazon.com', 'critical': 0} {'type': 'CAA', 'issue': 'sectigo.com', 'critical': 0} {'type': 'CAA', 'issue': 'comodoca.com', 'critical': 0}

RegistrationMarkMonitor Inc.

registrar	MarkMonitor Inc.
registered	1998-01-31
expires	2028-01-30
last changed	2025-12-29
owner	Mozilla Corporation
nameservers	ns1-240.akam.net ns4-64.akam.net ns5-65.akam.net ns7-66.akam.net
status	client delete prohibited client transfer prohibited client update prohibited

registered 1998-01-31expires 2028-01-30

HTTPS certificatenot valid

valid	no
problem	Could not resolve host (ENODATA)

DNSSECinsecure

Domain is not signed with DNSSEC

. → net → mozilla.net

Email authenticationpoor

SPF	pass `v=spf1 include:_spf.mozilla.com ~all`
DMARC	none
DKIM	none of 1 common selectors

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

Security scoregrade B · 135/190

Basic Security

10/40missing: DNSSEC Enabled, Nameserver Diversity

Record Security

30/45missing: DMARC Record, DKIM Presence

Advanced Security

15/25missing: SOA Record Configuration, IPv6 Support

Domain Reputation

35/35

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 2 lookups

SURBL MultidomainURIBL Multidomain

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.net" \ -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.net"

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

IPv6. Does mozilla.net work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.

Watch mozilla.net. 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