jhsph.edu

Observed Jul 18, 2026, 13:33 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

5 subdomains · tranco_40k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat jhsph.edu actually stands on - every host below is a signed observation

jhsph.edu

A / AAAA

128.220.193.2

Cloudflareserves the site

ens1.jhmi.eduens1.jhu.edu

jhmi.edu + jhu.eduanswers its DNS

smtp.johnshopkins.edu

johnshopkins.edureceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://publichealth.jhu.edu/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time51 ms

DNS resolutionNOERROR

Redirect chain

https://publichealth.jhu.edu/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

128.220.193.2

MX 1

10smtp.johnshopkins.edu

TXT 5

D7E44DA5BD9654531E8E34B4A766272D
MS=ms69723760
v=spf1 ip4:128.220.39.0/24 ip4:162.129.199.0/24 -all
v=DMARC1; p=none; rua=mailto:twd3anjc@ag.dmarcian.com; ruf=mailto:twd3anjc@fr.dmarcian.com
v=DNSSEC1; (detected)

NS 2

ens1.jhmi.edu
ens1.jhu.edu

SOA 1

ens1.jhu.edu hostmaster.jhu.edu

TLS Certificates (0)

None.

Subdomains (5)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for jhsph.edu. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/jhsph.edu">
  <img src="https://domaindrift.io/badge/jhsph.edu.svg"
       width="300" height="64" alt="DomainDrift signed observations for jhsph.edu">
</a>

Ed25519 Receipt

Receipt ID: 3eeb6930-057d-4794-bf6a-839ac64129dd
Output Hash: 4fa900f3c6a7c86cdf9c3070c603bc2b773e8cfbb2b1a05f62c6cf79231c3fd0
Signature: ed25519:ec3ba1652c487887e74bd80434e0797573e74f0143396de95970dca96b1fe4ea193c57fed6547616907f8bd672d32741b720d15e24af5da0cf09423f7cf2fa00
Public Key: ed25519:7aad40f2d6399c207fe2fc15aade04a78324787a355d36725cc90687f9e10cff
Parent: (genesis)
Plane: fast

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