How is web.dev?

Looks fine risk 0/100

Registered 8 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 371 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

371 ms

HTTPS

58 d

left on a Google Trust Services certificate

Age

8 years

registered 2018-10-29

Blocklists

listings across 5 lists

Everything we looked at

DNS records5 record types

A	216.239.32.27
AAAA	2001:4860:4802:32::1b
NS	ns4.zdns.google ns2.zdns.google ns1.zdns.google ns3.zdns.google
TXT	google-site-verification=1KUpoM0U9uMGLkzIL1CaCnZDapQByrD74Wr92wrYZdA
CAA	{'type': 'CAA', 'issue': 'pki.goog', 'critical': 0} {'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}

RegistrationMarkMonitor Inc.

registrar	MarkMonitor Inc.
registered	2018-10-29
expires	2027-10-29
last changed	2026-10-03
owner	REDACTED FOR PRIVACY
nameservers	ns1.zdns.google ns2.zdns.google ns3.zdns.google ns4.zdns.google
status	client delete prohibited client transfer prohibited client update prohibited server delete prohibited server transfer prohibited server update prohibited

registered 2018-10-29expires 2027-10-29

HTTPS certificate58 days left

valid	yes
issuer	Google Trust Services
covers	devsite-sni.developers.google.com, docs.actifio.com, d.actifio.com, apigee.com, .apigee.com, appdefensealliance.dev, .appdefensealliance.dev, bazel.build, .bazel.build, builders.google, .builders.google, cel.dev
protocol	TLSv1.3

issued 2026-10-07expires 2026-12-30

DNSSECinsecure

Domain has DNSKEY but no DS record in parent zone

. → dev → web.dev

Email authenticationpoor

SPF	none
DMARC	none
DKIM	none of 1 common selectors

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

Security scoregrade C · 135/205

Basic Security

10/40missing: DNSSEC Enabled, Nameserver Diversity

Record Security

15/45missing: SPF Record, DMARC Record, DKIM Presence

Advanced Security

15/25missing: Mail Server Configuration

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 5 lookups

SURBL MultidomainURIBL MultidomainSpamCop216.239.32.27Barracuda216.239.32.27UCEPROTECT Level 1216.239.32.27

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=web.dev" \ -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=web.dev"

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

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

Watch web.dev. 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