HOW.IS
?

How is jhu.edu?

Not sure yet risk 10/100

On no blocklists we checked, valid HTTPS, the site answered 403 in 107 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 jhu.edu looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
403
107 ms
HTTPS
193 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
A128.220.193.2
MX1 smtp.johnshopkins.edu
NSens1.jhmi.edu
ens1.jhu.edu
TXTAppId=000000004C0DFC04
apple-domain-verification=puEi9pYMYXEBi6bg
google-site-verification=hNzuzBrLneJ7I5LUSy4YheAPZH2ZTk4Lhz76BOMrViE
addevent=verification
apple-domain-verification=42Nv9AYu4nSWv2l4
airtable-verification=79c988870bd1359906d21b0f994f3e00
facebook-domain-verification=llmgbgm34s61kngl4fu1njobuwv9dc
google-site-verification=_78PEuF0BsnxniCMxdFGUXI8-rKuzXbA8w65yi5lRIs
google-site-verification=Hdg6lOHShC5P7Lb-ffkmurUN4E5BFTJ3NLZJu_9veDk
atlassian-domain-verification=v82iuU5jtUo6DLhV8wuZZxOk5KYBZdPh/5H+/GFe2/qw/ulV5gYzSVyg1UvD5xyw
6d0krd2r1m6d4rfp4y16ryvjq72x1wj4
google-site-verification=PogZzKp2fPlmh5CJooxo4w6DOBZvtzxL0aBOsSiGZwI
STKWsca/U+sp2fESD+L8E88fJJ/CVjPAf5Td1GTp3H+Qp45vNgVnofYNV9mj4wsk8YaFZSVLsFxNzJNg9vAlYA==
apple-domain-verification=Jn3ciaqDbX1EwcFk
google-site-verification=5Zsy53rEK-hXGheCVnv_KOA9ga3WMOe8LQlInYaE668
docusign=e0788c6f-1ca1-40be-b4f8-7e1516c85ef1
asv=5da62ba592bab3d1542dbbf409a762ee
ERF+yrd/ZMTjPnD5bs/nBFo+y0qQgnrv6og7UQaJONReXkEFyLl3peWV1tnVep8tHaJ1RgDgxvRplFYItpeyMw==
facebook-domain-verification=w4q5d6dqct374zdq9lk2a8yfsucsne
wkq43htjtz52dntbmtjw17pv0tqbbv0m
docusign=73173acb-df50-4cbd-b139-cc9adedeae7d
facebook-domain-verification=fui05pg5padt3lqjitadnizlq80543
qubcihh7hmrbonopqn86jnjuj2
xr53hrygrc5x351yc9rts2ggkv08kb3k
be53a892b3bf7129c12261ba89e8317ddc94023220d76fd9fa150b6d4b8f5c24
include:50639708.spf04.hubspotemail.netv=spf1 ip4:128.220.39.0/24 ip4:162.129.199.0/24 ip4:162.129.251.11 ip4:162.129.251.14 ip4:128.220.160.6 ip4:128.220.160.1 ip4:128.220.40.0/24 include:spf.protection.outlook.com include:service-now.com -all
facebook-domain-verification=og2369fpji19hzsapehl97bxys6cna
ZOOM_verify_HBPKAym7Tz-eFLcbrv5qMQ
smartsheet-site-validation=o1IiE_3MJXBZ0xFwfwhtOhRmrOKxm1A8
cisco-ci-domain-verification=4076af602b47f3714aa27fbdc0e14da0ca421ee8838942eabd7409b638930e39
B46963ED2CDBA64064F249DEE16C5EAA
v=spf1 ip4:128.220.39.0/24 ip4:162.129.199.0/24 ip4:128.220.229.235 ip4:162.129.251.11 ip4:162.129.251.14 ip4:128.220.160.6 ip4:128.220.160.1 ip4:128.220.40.0/24 include:spf.protection.outlook.com include:service-now.com -all
docusign=47d09d1e-f20e-45ae-8348-9e0cde59d212
e2ma-verification=e15fb
_yyz83s3w9txmwbyn8uj2c3qewcan2fs
docusign=29c2d014-367b-4c7c-a9fe-d6512a2f37b1
ca3-54ded686d84a42a6a8e74e31814ecad8
google-site-verification=czjH79sUqAY6z7WdhXo0K3Z_uB8PQrWPoYZFLyG2ZyI
anthropic-domain-verification-swf0eb=RQ8Zfyg8S3PQ2BZYxq1laA9K6
google-site-verification=ilMpBs6aLedW4vFTLGnCyGYoQuSB5azucOxwxSMIsbg
google-site-verification=OYMuhxFsKdAKd7rlfSh6j9u2RU7ZlLOIMb-apkt_TLE
Registrationregistrar not reported
HTTPS certificate193 days left
validyes
issuerInternet2
coversjhu.edu, *.hub.jhu.edu, *.president.jhu.edu, publicsafety.jhu.edu, expression.jhu.edu, *.gazette.jhu.edu, *.api.hub.jhu.edu, researchsaveslives.jhu.edu, *.communityimpact.jhu.edu, api.hub.jhu.edu, *.thankyou.jhu.edu, diversity.jhu.edu
protocolTLSv1.3
issued 2026-10-26expires 2027-05-13
DNSSECsecure

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

. → edu → jhu.edu
Email authenticationgood
SPFpass v=spf1 ip4:128.220.39.0/24 ip4:162.129.199.0/24 ip4:128.220.229.235 ip4:162.129.251.11 ip4:162.129.251.14 ip4:128.220.160.6 ip4:128.220.160.1 ip4:128.220.40.0/24 include:spf.protection.outlook.com include:service-now.com -all
DMARCpass policy reject
DKIMnone of 1 common selectors

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

Security scoregrade B · 160/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
30/45missing: CAA Records, DKIM Presence
Advanced Security
15/25missing: Mail Server Configuration, IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop128.220.193.2Barracuda128.220.193.2UCEPROTECT Level 1128.220.193.2

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=jhu.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=jhu.edu"

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

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

Watch jhu.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