HOW.IS
?

How is sdsu.edu?

Not sure yet risk 10/100

On no blocklists we checked, valid HTTPS, the site answered 200 in 368 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 sdsu.edu looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
368 ms · ends at www.sdsu.edu
HTTPS
129 d
left on a Internet2 certificate
Age
?
creation date not reported
Blocklists
0
listings across 4 lists; 1 did not answer

Everything we looked at

DNS records5 record types
A104.20.12.66
MX10 mxb-009b9c01.gslb.pphosted.com
10 mxa-009b9c01.gslb.pphosted.com
NSns01.sdsu.edu
ns02.sdsu.edu
TXTbrevo-code:b1414e0a234265a2faa294058248ae06
teamviewer-sso-verification=8e2fd763b26842fbaa077746436dcb2e
pardot886933=7d0a9bfa98bc738378206707cb0710bc9cf6bf5b44b245d86a8e2cfd7afffcf3
jamf-site-verification=1k6X_gIWkA1rgGo0T7mbXQ
e2ma-verification=f7j3
dell-technologies-domain-verification=sdsu.edu_99e6fd3a-69c3-4450-8288-4892d5a7d56a_1717347937
google-site-verification=DIYuNpHVWeVmthO3EOB4lgi0CgQBC6WJ-OoeVjbGkFc
SFMC-COU69nqBETcp5Bnzw1Rijiv_lFBBlouF9B_Df6eW
openai-domain-verification=dv-DmYzqJwQSQ98fp47vrgmDrg6
atlassian-domain-verification=QHMkCJr62sGhGLoykU9d7D8hciIv2mPBdrZhG1qx1et9jXtKfeeDa9/eM3EFZY5p
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
apple-domain-verification=fzMg6Q3joqoCeUdA
MS=ms25063800
MS=ms42297913
pardot238872=1f5b286cc8ef1eec02146f0c3e75bbb496908a00094ac2a87fdc83cfdf795085
96150E68E4A243B2A02EA3D554D7AF3470F1533BFA0A006B5656E55D00FCCC03
3C509AF01D7CDA303B651585D017ED5D
smartsheet-site-validation=SCVPHKy1F38uD2zjMJDpJxWBry1VhoPG
read-ai-verification = 0199e52c-d423-712b-8503-05f8291baa17
adobe-sign-verification=f90b78813ea85a56a64f9271be170251
apple-domain-verification=3jWSoDf3jpCe5iuw
anthropic-domain-verification-vacpwe=AgOLcr4VHtRfvf0SYCvfNq3M9
00DF00000007EVl=1TBPL00000000Mb
facebook-domain-verification=hflgnpr16afby8q6m8p5m0et5wyfke
autodesk-domain-verification=BNV4av0GRPwL8bOnmSbw
adobe-idp-site-verification=7ca634bd-c1d9-49d3-8bcc-1e5f6186040c
CAA{'type': 'CAA', 'issue': 'emsign.com', 'critical': 128}
{'type': 'CAA', 'issue': 'ssl.com', 'critical': 128}
{'type': 'CAA', 'issue': 'pki.goog; cansignhttpexchanges=yes', 'critical': 128}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 128}
{'type': 'CAA', 'issue': 'sectigo.com', 'critical': 128}
{'type': 'CAA', 'issue': 'godaddy.com', 'critical': 128}
{'type': 'CAA', 'issue': 'digicert.com', 'critical': 128}
{'type': 'CAA', 'issue': 'amazon.com', 'critical': 128}
{'type': 'CAA', 'critical': 128, 'issuewild': 'sectigo.com'}
{'type': 'CAA', 'iodef': 'mailto:security@sdsu.edu', 'critical': 128}
Registrationregistrar not reported
HTTPS certificate129 days left
validyes
issuerInternet2
coverswww.sdsu.edu, *.sdsu.edu, sdsu.edu, www.engineering.sdsu.edu, www.foundation.sdsu.edu
protocolTLSv1.3
issued 2026-03-11expires 2027-03-11
DNSSECinsecure

Domain is not signed with DNSSEC

. → edu → sdsu.edu
Email authenticationgood
SPFpass v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
DMARCwarning policy none
DKIMfound: selector2, k1, s1, s2

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

Security scoregrade B · 163/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
38/45missing: DMARC Record, 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 MultidomainSpamCop104.20.12.66Barracuda104.20.12.66UCEPROTECT Level 1104.20.12.66

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=sdsu.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=sdsu.edu"

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

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

Watch sdsu.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