HOW.IS
?

How is purdue.edu?

Not sure yet risk 10/100

On no blocklists we checked, valid HTTPS, the site answered 200 in 138 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 purdue.edu looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
138 ms
HTTPS
87 d
left on a InCommon, LLC certificate
Age
?
creation date not reported
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records4 record types
A128.210.7.200
MX0 purdue-edu.mail.protection.outlook.com
NSns4.purdue.edu
ns3.purdue.edu
ns5.purdue.edu
TXToysmqwNak8YGUW3sLWwJg1feIr+RzjS3GAjdI6bSHjLGftS6HmMqoAUagGXLrjogVk4ptcEPz+5oyrWQeCkXKw==
facebook-domain-verification=izc7cwx7c6ynlbzt3bvcasz2natro9
bw=ukH9x7TrdldFT0SuYfXZ8aOBpFT8H6VI3GtpDr5RdXfU
00DE0000000bl8X=1TBRd00000009GD
8c707d78-2dc6-4bac-b4f9-4f2ff625f327
cisco-ci-domain-verification=5e16bdfb5c92c6d57a381bafa4689d833ce3fed29b3c973bfaba11f146732613
998371A6F52AFE55605E99B34E3987A1
atlassian-domain-verification=YwCJ4gAdGrIy4Trr5Fq2mBW41Vo4HOdkqNXNFssajAgT0sPIhkb7hiXXG8gCVzrz
jamf-site-verification=VaeBGvW_vGEVdXlQmlspfQ
canva-site-verification=_ZOGZ-ChIB3VnGbHx8zCLg
autodesk-domain-verification=0mpL8cXJsDjFqdB61_oM
brevo-code:231c553f8bfc20a63e4de939455f5991
atlassian-domain-verification=rwaaUqSzGwq84NSUvMqT86CCHDKF7TMyoaPiQVgP6sQUY3/aeaNsTmHVDEBNmFQ9
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:spf.protection.outlook.com ~all
#^0zq4LIZZq&CRglVz*@h6QFrQYfE%r9YPjtMugJ!pfYMDS%Y&PYMB0@TDM@R%fbcn#ZZZDfrpH2qO#@1CW2rhspOp8HVd0IU7l
n98pbk2retfsg11ronqr8158mu
apple-domain-verification=PR5U9BqX66R0APG8
_globalsign-domain-verification=LBGN_PGPzs-K_ugvlmQc5pBRof3QCVximyhc9hNKsU
airtable-verification=b01c1d3515c017805e817e21360a0506
1B5A432253C00589C3C303313C798F60
webexdomainverification.GDSP=4bd98732-2799-47d1-bbd3-66e6149d1cad
google-site-verification=en6dTnGVvW0yFBlNPxKv5aSBsJNG9XTRlJLx5xzkEGE
00D3h000007QZV0=1TBVR00000009BN
airtable-verification=532cf661a9f1ce7337e69babb11917de
anthropic-domain-verification-g1eyw0=OEi8FVjt86mGEIW4ixx2u5KC8
coursera-domain-verification=7YtVTrT8qPN5I6TM4j0JTlG1J8oUVTHHIirDRrvnyBZsqTD5suAZAxEC9V71BoAL
adobe-idp-site-verification=82aaf4b4-e1ab-4a7d-bea2-10f5820faec9
MS=6F64A1C5D9A24164AA0A7E59CC8C1E7758DE8E88
00D8c000002KCr2=1TBUw0000000CPN
Registrationregistrar not reported
HTTPS certificate87 days left
validyes
issuerInCommon, LLC
coverswww.purdue.edu, admission.purdue.edu, admissions.purdue.edu, alstar-internal.ceris.purdue.edu, alstar-pets.ceris.purdue.edu, anglerarchive.org, ansc.purdue.edu, approvedmethods.ceris.purdue.edu, apps.online.purdue.edu, arboretum.purdue.edu, atracsi.ceris.purdue.edu, beekeeper.ceris.purdue.edu
protocolTLSv1.3
issued 2026-07-14expires 2027-01-28
DNSSECinsecure

Domain is not signed with DNSSEC

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

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

Security scoregrade B · 145/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
30/45missing: CAA Records, DKIM Presence
Advanced Security
10/25missing: Mail Server Configuration, SOA Record Configuration, IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop128.210.7.200Barracuda128.210.7.200UCEPROTECT Level 1128.210.7.200

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=purdue.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=purdue.edu"

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

IPv6. IPv6 readiness grade for purdue.edu Does purdue.edu work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.

Watch purdue.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