How is vercel.app?

Looks fine risk 0/100

Registered 7 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 94 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

94 ms · ends at vercel.com

HTTPS

88 d

left on a Google Trust Services certificate

Age

7 years

registered 2020-01-28

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	64.29.17.131 216.198.79.131
NS	ns2.vercel-dns-3.com ns4.vercel-dns-3.com ns1.vercel-dns-3.com ns3.vercel-dns-3.com
TXT	v=spf1 -all google-site-verification=ye33zD88WkvAKX2-F2WH7Fi-QkAzvvWaPJQneD6Vt80
CAA	{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0} {'type': 'CAA', 'issue': 'pki.goog', 'critical': 0}

RegistrationTucows Domains Inc

registrar	Tucows Domains Inc
registered	2020-01-28
expires	2036-01-28
last changed	2026-03-14
nameservers	ns1.vercel-dns-3.com ns2.vercel-dns-3.com ns3.vercel-dns-3.com ns4.vercel-dns-3.com
status	client transfer prohibited client update prohibited

registered 2020-01-28expires 2036-01-28

HTTPS certificate88 days left

valid	yes
issuer	Google Trust Services
covers	vercel.app
protocol	TLSv1.3

issued 2026-10-25expires 2027-01-23

DNSSECinsecure

Domain is not signed with DNSSEC

. → app → vercel.app

Email authenticationfair

SPF	pass `v=spf1 -all`
DMARC	pass policy reject
DKIM	none of 20 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

45/45missing: 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 MultidomainSpamCop216.198.79.3Barracuda216.198.79.3UCEPROTECT Level 1216.198.79.3SpamCop64.29.17.3Barracuda64.29.17.3UCEPROTECT Level 164.29.17.3

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=vercel.app" \ -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=vercel.app"

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

Watch vercel.app. 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