How is cmu.edu?
Not sure yet
risk 10/100
On no blocklists we checked, valid HTTPS, the site answered 200 in 236 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.
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
236 ms · ends at www.cmu.edu
HTTPS
79 d
left on a Internet2 certificate
Age
?
creation date not reported
Blocklists
0
listings across 5 lists
Everything we looked at
DNS records4 record types
| A | 128.2.42.10 |
|---|---|
| MX | 1 ASPMX.L.GOOGLE.COM 10 ALT3.ASPMX.L.GOOGLE.COM 5 ALT1.ASPMX.L.GOOGLE.COM 10 ALT4.ASPMX.L.GOOGLE.COM 5 ALT2.ASPMX.L.GOOGLE.COM |
| NS | NSAUTH2.NET.cmu.edu NSAUTH3.NET.cmu.edu NSAUTH1.NET.cmu.edu |
| TXT | [NRDR 32936_IN_TXT_r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== tGCEAk5qNOFhWjjp1w58vw] [NRDR 34437_IN_TXT_google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg Or5AmLIb59AN+oiEMjOqoA] [NRDR 37683_IN_TXT_A8809FFAB54BD9C6F7DFBE92616764D0 1pWIIBS0QK7rR0bt/OqwZg] docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b ZOOM_verify_FruZuJfdTeW1OOezpsuIVA r4bgkix7EqRv+dJHKYelMrye44oR+366MsSA0lCP0TOcMK8wfs0bpTMDP1tLTZ66OFh0Qx+ZMLBCeVx0NJ3syQ== zoho-verification=zb38550127.zmverify.zoho.com google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU [NRDR 34068_IN_TXT_atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi ePUw4Mw9giYZRVzpV/ysvQ] [NRDR 31504_IN_TXT_v=spf1.include:_spf.cmu.edu.~all jxEj2x9CC1Gu8ePZldY84w] [NRDR 32847_IN_TXT_facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n 9I1LCDr7zb+jK0IoSEFayA] [NRDR 34441_IN_TXT_zoho-verification=zb38550127.zmverify.zoho.com sbctKhpo8bhwlNq+f0khtw] atlassian-domain-verification=H4RHVEsTq5YZaRen7VBly2a3AqWhfLMxAL3wBScS8EB0Pg5x1vaPhj3eXsGaUOGi [NRDR 34438_IN_TXT_google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg eMgkItPzPonrYzRZBOx13w] [NRDR 34436_IN_TXT_google-site-verification=MYZf5OssFVvgYQF1snvJdiFbMjHy53WzLrnsVGkgpFU C0YNNkwQ5Qfm8taSZKc+1A] MS=ms17583017 [NRDR 37587_IN_TXT_EECD69320F38F645362247248BD675F4 vdnDjzc5a9LVXuQ6DmgOhA] apple-domain-verification=yZrPHuazhdH42CPf 00df4000000231leaa [NRDR 36124_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw] e2ma-verification=fu2 google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 google-site-verification=pNbrq7j_EeIowr_Kw1Jfy46bmFWR9p1llXH_leCdLrg [NRDR 33356_IN_TXT_MS=ms17583017 io8/1MnXyp5PTqiijD8s0Q] airtable-verification=878daeee4665d51015a6dda912bbb9f5 [NRDR 30017_IN_TXT_google-site-verification=O2gyijlOW-8BSOghh0tL_4N1PlWU_qznkYhUA22dLJ0 PiRIS0yTtnNYmTWYpWCCVw] facebook-domain-verification=vxpo0xkores42yfj9ggcdd2o2d2v2n [NRDR 31057_IN_TXT_00df4000000231leaa QSq9rQj5GCBh30pVnLGMtQ] [NRDR 34190_IN_TXT_docusign=048da45a-23c6-4f6b-8f96-6dff4fa6b22b AWGRCMvgvpXmHSJ7nxKghg] reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f A8809FFAB54BD9C6F7DFBE92616764D0 google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg EECD69320F38F645362247248BD675F4 [NRDR 36125_IN_TXT_e2ma-verification=fu2 tn9dGsCpd6YZrmWG6O9dqw] [NRDR 34503_IN_TXT_google-site-verification=JopPlnNv9VupQydpE3TiwZAEod-zouxEX0inao6rggg HxtpS+uc1I0HuPBMBaTlCA] [NRDR 34415_IN_TXT_apple-domain-verification=yZrPHuazhdH42CPf dbWBQEISZeHDi/9KkKT96g] [NRDR 37073_IN_TXT_reftab-domain-verification=c24d073b23fed3af77c9e3b40010223f Kmo0sQxn82COz9etYwP/3w] google-site-verification=m3lUupwhWqjbGCA6JswqWyBi7tkzh-BjbRiYuC6EXTg [NRDR 16337_IN_LOC_40.26.39.0.N.79.56.36.2.W.283.1.10.10 5PS/aNXhz6qcZ6tfoRdgeQ] v=spf1 include:_spf.cmu.edu ~all [NRDR 33014_IN_TXT_ZOOM_verify_FruZuJfdTeW1OOezpsuIVA +31oybl7gh2i74ky0SLQcg] [NRDR 37284_IN_TXT_airtable-verification=878daeee4665d51015a6dda912bbb9f5 GCXTwRluJG0dSxHBUrbFYA] [NRDR 36038_IN_TXT_cisco-ci-domain-verification=5f809f49f9d3ca48d84db537e031b2007011ea11f6410de6a8a02919908675d6 VTvqYpCLdM5K6bM5zRNwDQ] |
Registrationregistrar not reported
HTTPS certificate79 days left
| valid | yes |
|---|---|
| issuer | Internet2 |
| covers | www.cmu.edu, admission.enrollment.cmu.edu, ai-sdm.cmu.edu, alumni.cmu.edu, blockchain.cmu.edu, bme.cmu.edu, box.cmu.edu, caps.web.cmu.edu, carnegiemellon.edu, carnegiemellon.org, carnegiemellontoday.cmu.edu, cbd.cmu.edu |
| protocol | TLSv1.2 |
issued 2025-12-18expires 2027-01-18
DNSSECsecure
Domain is properly signed — chain validated by an independent validating resolver
. → edu → cmu.edu
Email authenticationgood
| SPF | pass v=spf1 include:_spf.cmu.edu ~all |
|---|---|
| DMARC | warning policy none |
| DKIM | found: s1, s2 |
Whether mail claiming to be from this domain can be checked as genuine.
Security scoregrade C · 143/205
Basic Security10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security23/45missing: CAA Records, DMARC Record, DKIM Presence
Advanced Security15/25missing: SOA Record Configuration, IPv6 Support
Domain Reputation50/50
Threat Detection45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop128.2.42.10Barracuda128.2.42.10UCEPROTECT Level 1128.2.42.10
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=cmu.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=cmu.edu"
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on cmu.edu.
Reference: /llms.txt.
IPv6. 
Does cmu.edu work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
Watch cmu.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