How is upenn.edu?

Not sure yet risk 10/100

On no blocklists we checked, valid HTTPS, the site answered 200 in 73 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

73 ms · ends at www.upenn.edu

HTTPS

68 d

left on a Let's Encrypt certificate

Age

creation date not reported

Blocklists

listings across 5 lists

Everything we looked at

DNS records5 record types

A	23.185.0.4
AAAA	2620:12a:8000::4 2620:12a:8001::4
MX	10 mxb-00390e01.gslb.pphosted.com 10 mxa-00390e01.gslb.pphosted.com
NS	adns3.nnn.upenn.edu adns4.upenn.edu dns1.udel.edu adns1.nnn.upenn.edu adns5.upenn.edu dns2.udel.edu adns2.nnn.upenn.edu adns6.upenn.edu
TXT	onetrust-domain-verification=114427d55783472c9c6399070d36a7a6 v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:spf.protection.outlook.com include:spf.penno365.isc.upenn.edu ~all 0850FA77764BD1CBAEEDDB31282A3244 google-site-verification=USSLz8fKaD900NdBD87OEjo0zVYS1RwVyebE0-rN1II anthropic-domain-verification-3mac1g=J3Hgt9mjdh1LaP7MtfIfyPJBv jamf-site-verification=2LcBmAh3gm8z6JsJu3k_cQ docusign=78297198-f708-4232-b63b-9ce516ae54a1 KO71GJZC894IG1PGQC0AIXUV2G6A8EXBGSMTW1QX atlassian-domain-verification=maiZsC5JWjh1XYgMeCPA+Eu/1WPEcyn+n7TzXs5ukNzEV/GQRRHFl4jgohfUpHvV

Registrationregistrar not reported

HTTPS certificate68 days left

valid	yes
issuer	Let's Encrypt
covers	home.www.upenn.edu, pantheontest.www.upenn.edu, transformation.evp.upenn.edu, upenn.edu, www.transformation.evp.upenn.edu, www.upenn.edu
protocol	TLSv1.3

issued 2026-10-07expires 2027-01-05

DNSSECsecure

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

. → edu → upenn.edu

Email authenticationgood

SPF	pass `v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:spf.protection.outlook.com include:spf.penno365.isc.upenn.edu ~all`
DMARC	warning policy none
DKIM	found: selector1, selector2

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

Security scoregrade B · 163/205

Basic Security

20/40missing: DNSSEC Enabled

Record Security

23/45missing: CAA Records, DMARC Record, DKIM Presence

Advanced Security

25/25

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 5 lookups

SURBL MultidomainURIBL MultidomainSpamCop23.185.0.4Barracuda23.185.0.4UCEPROTECT Level 123.185.0.4

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=upenn.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=upenn.edu"

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

Watch upenn.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