HOW.IS
?

How is yale.edu?

Not sure yet risk 10/100

On no blocklists we checked, valid HTTPS, the site answered 200 in 160 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 yale.edu looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
160 ms · ends at www.yale.edu
HTTPS
13 d
left on a Certainly certificate
Age
?
creation date not reported
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A151.101.130.133
151.101.2.133
151.101.66.133
23.185.0.2
23.185.0.4
AAAA2a04:4e42:200::645
2a04:4e42:400::645
2a04:4e42:600::645
2a04:4e42::645
MX10 yale-edu.mail.protection.outlook.com
NSpks1302-102.net.yale.edu
pks1302-103.net.yale.edu
ns1.bluecatdns.org
ns1.bluecatdns.com
ns1.bluecatdns.net
TXTanthropic-domain-verification-qq4jmy=xgfwfuTRR16ZOtelI7IbwWRW4
brevo-code:068fa97f1793f7c7bc3b7c779b77f568
docusign=e8f08e07-8b40-4ae4-a8cf-7ce972d4b382
pardot406332=4ac3a1788076ae6f053d313b811664e8c5d2c54dbb5be4d14d6cfffa8cb0b987
brevo-code:d66805a3df437fba6bf7d701b26c2ea6
e2ma-verification=n69ab
atlassian-domain-verification=d6trxstBXPKZ-Fn96brt+2GuIbtk29HYhBAdLyXwH1GGOd5OqEaoeX1j7Iako4Y8
jamf-site-verification=nh8ZcTKHzvgKfIp0TgFLfg
_w450pwsqqfrqqw4n7yodv1euryd9akn
airtable-verification=db05bb0a9dc110aced3b5f08e4757b5d
e2ma-verification=cnz
amazonses:9Ya8iDYeN700mkvk/yE/JXHlH/zQjYAA6+XyWlnms+E=
airtable-verification=5faa4d445f2f11d5a2e0d2dff8c4d287
airtable-verification=2115523430cd3176e428cebd0c4f6def
e2ma-verification=tmfcb
mdt-site-verification=e6096cdb-e3ce-4195-9cc1-5e53bb029cea
e2ma-verification=pyngb
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
ms-domain-verification=7d4e961a-dc9b-4b56-b436-d3082895899c
ms-domain-verification=e8b658ec-a682-43ca-8496-e270222b70a5
canva-site-verification=OnZfRkq6vky-DOdzFtAQhg
google-site-verification=wAcIxfMZtLARxIU3MA82C9ywf-MODgjwuP2JdcSvs3E
d365mktkey=qXRmZD4AqCPHhxJWI7EnhD5InEkYOsYQ6eidVZHnCyAx
atlassian-domain-verification=DNorkJRvlGwYJqdqujeAPnnxXpxnzTnJ20Gyfs5rn8imo6NaMiFye9VpWRxgLqmI
cisco-ci-domain-verification=43cd3c1de76d9fe0ae0f1db0accb59d4c14ba22243d55d57046fc3fe20b202e0
MS=ms71696546
mailerlite-domain-verification=cdb1198ee33a716cf5d8be0e1234faede0c55a26
facebook-domain-verification=4b2v2cdl4pnhet6qnrtzuof73xy5ic
adobe-idp-site-verification=8bd714ff-27d9-412f-a336-011607c5921d
google-site-verification=bCh0qosscWOo9bk7i8mSUwbO7xo1L0zhM466fQLYVys
google-site-verification=wLNdYe7PcFN1GTfpDeWAT-aPFTWpa_fMn7ZWDw07cuc
F6G3WBWAQ519BOLKY7UQHUB1B25UH7CTZOUT3Z9GC
google-site-verification=fUwYVutFF-kUCTqnDZg7s4lWZSUTOO2k2zHogw_1qYw
e2ma-verification=e39ab
securiti-verification-id=1PLTDJjwuV47eAeftOls50oWNhf3B/eQIB37SneSuOg=
mindmanager-verification=28df50a8f81c11d34096b520343366ad0de6335be17e48baa8ee5d2fa15c3d39
wrike-verification=NjQ3NTM0Mjo3MDZiYTQyYmViN2Q4ZDUzYzA2YjUwZmEzNDFjOTBjOTJjZmY2NTdlMGQyZTU5Yjk2NzAxMmYwOTY5MDVmZGVi
anthropic-domain-verification-vhzdfe=ofbUZH3TY0KRR5FbkqjAMr3N8
docusign=a560f5e1-1b15-42e8-9630-f9f375c0d326
eWFsZQ==
airtable-verification=f429cd2a132a767ba9e2d08c506a8f2c
airtable-verification=dfa71ce641ca4600db5fec1a57c53ef2
iContact1458769
airtable-verification=bd629e6fdd78d25b886c3131d32f2522
d365mktkey=Nf1xniLZCW9LJtMAKbxJ4QluH18K7RKSYYw5ndrkxlox
KVATau69gzhqUOgCyXmfd9cSFFIarSmLDzRIuuICLnF8FgBUcmhtEuWIfd8/R4wkQJh9vIfvF0GJ/s3/S2RBHQ==
e2ma-verification=ea8fb
Dynatrace-site-verification=72c19553-ec2d-4e4f-950c-466938a345c6__gfjfnfbkfm1n41g7rf0n05tqbt
atlassian-domain-verification=dMzGvQ6scQb/L03OUQRXV586QJ9lo0steL1LuP46eDG2IF4J7EAD6oo7R5ml35kP
e2ma-verification=vqzeb
sending_domain1108142=0d97d094e155ad3aa47f7970aed92373b498a7340b0f8c714c4c4f23baa7376f
brevo-code:09357c2630559d902817770f34dbf0b1
dropbox-domain-verification=y270qicvbi7s
00DHo0000038MpA=1TBNx00000005Fp
Registrationregistrar not reported
HTTPS certificate13 days left
validyes
issuerCertainly
coversyale.edu
protocolTLSv1.2
issued 2026-10-13expires 2026-11-12
DNSSECinsecure

Domain is not signed with DNSSEC

. → edu → yale.edu
Email authenticationexcellent
SPFpass v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
DMARCpass policy quarantine
DKIMfound: google, selector2, k1, s1, s2, mail, mx, resend

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, SOA Record Configuration
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 17 lookups
SURBL MultidomainURIBL MultidomainSpamCop23.185.0.4Barracuda23.185.0.4UCEPROTECT Level 123.185.0.4SpamCop151.101.130.133Barracuda151.101.130.133UCEPROTECT Level 1151.101.130.133SpamCop151.101.2.133Barracuda151.101.2.133UCEPROTECT Level 1151.101.2.133SpamCop23.185.0.2Barracuda23.185.0.2UCEPROTECT Level 123.185.0.2SpamCop151.101.66.133Barracuda151.101.66.133UCEPROTECT Level 1151.101.66.133

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=yale.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=yale.edu"

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

Watch yale.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