HOW.IS
?

How is harvard.edu?

Not sure yet risk 10/100

On no blocklists we checked, valid HTTPS, the site answered 200 in 52 ms.

Why

02050100
finecarefulhigh risk
  • +10Could not read the domain's registration record.
  • ·Could not check registration; retry before trusting this domain.

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

How harvard.edu looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
52 ms · ends at www.harvard.edu
HTTPS
43 d
left on a Let's Encrypt certificate
Age
?
creation date not reported
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records4 record types
A192.0.66.20
MX100 mx0b-00171101.pphosted.com
100 mx0a-00171101.pphosted.com
NSa6-66.akam.net
a7-65.akam.net
a1-171.akam.net
a16-64.akam.net
a10-66.akam.net
a11-67.akam.net
TXTjAykGnWytyLeBseMa8x2/MBve6/yQqana4yrAc1ROoei7uZHUkM2FU0Xx4qI/rm+kOGdImZdoq0fdodgLEw1dg==
globalsign-domain-verification=B8359DCEFBCF837B95E2F82282E4297A
xIGeuA0e5B1BOjTE4IBO806ziFX9G1m2dVJ8zO7CMkmKwZ6MEkMXC0P7n5SRCGOdS9jbceH/7gKYgD4h9FBGKA==
adobe-idp-site-verification=66e813947c764d98330002232f383a68df8ad609065abb9482f3805dd2a1902c
mgverify=45e7fcf3ed36156afa50e8dd90aa36e82af6f11b95e35537b03ecebd434b328a
pardot378242=7001579db574e062735763ba81b54da111abc31facf16bbfa653ab6b8a770988
airtable-verification=8b8110e9283dd87d57b3c5f2f5af2db1
anthropic-domain-verification-dprfjc=K9LyiFV7zLafnNLNO4lFjyaRx
google-site-verification=DzhZyP8pu0M1-RFghfTcSN-9poidboYRNdfn2Rf2hCQ
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:spf.mailjet.com ~all
brevo-code:30d9f789747b4c124f72dabf24a0a97f
pardot962443=9098884472c5cb29a2e20700b41411cb4aa5ebcf340360e71b2cd8464d8864b6
google-site-verification=xXWxVElKH8ek_eW45CbAqVSMTQgAqLYUNQUrWpOmkrY
atlassian-domain-verification=ASRKBXyOafZgDCRWh1Ylv34hiOSMgAIoNXs8H57rR3aTkuOD5KwJfUN9G3f7Ah/H
globalsign-domain-verification=5A1F4E0081852ECB9015E837384121AD
pardot_378242_*=8b485d5cd9114869cff8f307da5fa9287434ebec11621d88c07ce97a7fee06e0
google-site-verification=xqg8LPF_v_QMEIST789q8xhRDqUEX4_8lQjAvV6YykY
openai-domain-verification=dv-e8vYSnmmPbWxpNte1iIKgvOO
globalsign-domain-verification=1C94E0FFAAE95796F597427644D90C03
anthropic-domain-verification-gy5zhc=zmrGT2kyyc2HlnUn6f0utkQB6
google-site-verification=lY-T8NneGQX1RGXeaoBJjSmT_lx3dLRKDq1xY44ZI5w
globalsign-domain-verification=9ff12eafbeebb02a0f2b0383aef9d1fa
google-site-verification=pWvLuNePLYxAbafZw2a95vnBhvcj12DzM9NulT9ujSY
cloudflare_dashboard_sso=ef2b950ccd264aba96ddef41e3cf3475
google-site-verification=NEWpTHNZnWRWN3trkIMeFbuPVG3ExwOXUHlC9aJ2sks
status-page-domain-verification=p83gt91wpxms
google-site-verification=DZTZhbBaYJ6AO5j-tHFYBdkwryNywFh2gMUeg3SRDSg
geneious.com:domain-verification=1781B6exIEsRBzJ0KzPtKg
openai-domain-verification=dv-5z82SztO32q9YBNgFooNBz5v
globalsign-domain-verification=dcc2e5d0d67efc32044ae679c7cf19e6
airtable-verification=a92cef30671587a4f6deb7951c1c3f1a
globalsign-domain-verification=1DDF777ED1ADF45E5FFAFFAAD6774180
atlassian-domain-verification=OYfkFwspEELRW6A32BsDVWgvdz8/pLBxVcq7s/mHLBVGqRQRG58XA5LRtDAGpfA7
airtable-verification=b25f432db3cbc5bfc481914364b6ce41
globalsign-domain-verification=C44DEEAC45AB4DC2B5AD0B9B2E5D5803
heroku-domain-verification=1qfmzz9vp3kexf4fr5zuliwvpieih2ffz4gexo7tlh4
globalsign-domain-verification=87677a19ae97bfbeec25ff1510a80420
MS=ms35192554
atlassian-domain-verification=Z8oUd5brL6/RGUMCkxs4U0P/RyhpiNJEIVx9HXJLr3uqEQ1eDmTnj1eq1ObCgY1i
smartsheet-site-validation=jfLh_IkQNJXuKKpTn7RydwiiaAOLy4CR
_hyz89h4dzuordjnlhz6kkyujqcd9smf
google-site-verification=MmfJS0BjLRgcxrlj8kAyNdToKeAmj0fKb-lPOnd5Pmo
ciscocidomainverification=41ce9827e3fbbca9ce75d5dbb5a6bc7b089dc4e239c1b56ba828216d1214480
pardot679353=f93ea3588d69483bf48dbf587511f51d43ddadaae52b8bac6856c8428559a06d
fastly-domain-delgation-vdnblsdg768nm-21052021
pardot679353=3cc5e124c5020a1e160f01981f45be33a467a1c802711e0e5654184ef56d18c9
status-page-domain-verification=b4j4g69th3vv
Peh2GHoW8uiAzwS9tTZKlGBn9cMq6Y+XUFtrqmLtqFh1WvloPkzGczPsZcSdDfin4hZ7QiL9J7SM8yr7Yyzi8w==
Registrationregistrar not reported
HTTPS certificate43 days left
validyes
issuerLet's Encrypt
coversharvard.edu, www.harvard.edu
protocolTLSv1.3
issued 2026-09-10expires 2026-12-09
DNSSECsecure

Domain is properly signed — chain validated by an independent validating resolver

. → edu → harvard.edu
Email authenticationexcellent
SPFpass v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:spf.mailjet.com ~all
DMARCpass policy quarantine
DKIMfound: default, selector1, k1, s1, s2

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

Security scoregrade B · 155/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
30/45missing: CAA Records, DKIM Presence
Advanced Security
20/25missing: IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop192.0.66.20Barracuda192.0.66.20UCEPROTECT Level 1192.0.66.20

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=harvard.edu" \ -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=harvard.edu"

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

Watch harvard.edu. 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