usc.edu

Observed Jul 24, 2026, 17:45 UTC (1d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Up right now

Runs onFastly

Email byProofpoint

Secured byLet's Encrypt

Also usesAtlassianDocuSignGoogle Search Console

IPv6 · 4 subdomains · education_expanded

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

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

usc.edu

A / AAAA

23.185.0.32620:12a:8000::32620:12a:8001::3

Fastlyserves the site

ns0163.secondary.cloudflare.comns0037.secondary.cloudflare.com

cloudflare.comanswers its DNS

mx0a-00164701.pphosted.commx0b-00164701.pphosted.com

Proofpointreceives its email

TLS

about.usc.edu

Let's Encryptissued its certificate

DNS Records

A 1

23.185.0.3

AAAA 2

2620:12a:8000::3
2620:12a:8001::3

MX 2

50mx0a-00164701.pphosted.com
50mx0b-00164701.pphosted.com

TXT 35

3b3ivpda2f10se3nn7olfrfucj
71MB6F28FTH9N79MPH1TN49H6E
D14214D894D2922F41249F24F96E2A3F
MS=ms20859340
SFMC-amtHrwXeF3C5rm2Ha9E3H_dpDHSLFtemkbvrt-wI
amazonses:pdFwTbWzxT9aEG1QWjQIN1JQ2Nde7PSWZbDNYgLiJII=
apple-domain-verification=f8jvjXpxkZuZImoG
apple-domain-verification=r8UAnaLgMQbbCPYH
asv=1147b35e22e2230f3e7ed7ef96d0b3cb
atlassian-domain-verification=kSvetIKe/diM5FGbD37dFnvsdAGwPgNFtgM/1L2RoLFZeXaHp85HV/7TZ2PwsyX3

NS 2

ns0163.secondary.cloudflare.com
ns0037.secondary.cloudflare.com

SOA 1

ns0037.secondary.cloudflare.com root.usc.edu

SRV 1

usc.edu:5269 p5

TLS Certificates (3)

Common Name	Issuer	Expires
`about.usc.edu`	C=US, O=Let's Encrypt, CN=YR1	Mon, 14 Sep 2026 09:29:38 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (4)

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 usc.edu. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_2fc05f8ec3fd7775
Output Hash: d61a9a516c6dedbb08bf3b94ede51feb4d8f2f7d767f44e1541915a69fc25f87
Signature: ed25519:1a1f53763ff155fc12ebc6d5dcfd15dc6dc607787452ee602f78c96c6bd0e104f8411bdcdc0438f8e9bf6753d4b920ab976b48ae5fa7a16df55098946b58c600
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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