upr.edu

Observed Jul 18, 2026, 13:27 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onUniversity of Puerto Rico

Email byMicrosoft 365

Secured byLet's Encrypt

Also usesGoogle Search Console

IPv6 · 1 subdomain · tranco_40k

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

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

upr.edu

A / AAAA

136.145.11.2242607:2000:0:11::224

University of Puerto Ricoserves the site

ns2.upr.eduns3.upr.eduupr1.upr.edu

upr.eduanswers its DNS

upr-edu.mail.protection.outlook.com

Microsoft 365receives its email

TLS

upr.edu

Let's Encryptissued its certificate

DNS Records

A 1

136.145.11.224

AAAA 1

2607:2000:0:11::224

MX 1

0upr-edu.mail.protection.outlook.com

TXT 6

v=spf1 ip4:136.145.1.15 ip4:136.145.1.222 ip4:136.145.5.5 ip4:136.145.7.15 ip4:136.145.11.74 ip4:136.145.11.119 ip4:136.145.18.63 ip4:136.145.18.70 ip4:136.145.19.32 ip4:136.145.22.154 ip4:136.145.30.40 ip4:136.145.30.57 ip4:136.145.30.67 ip4:136.145.30.72 ip4:136.145.50.41 ip4:136.145.54.75 ip4:136.145.70.5 ip4:136.145.70.63 ip4:136.145.70.75 ip4:136.145.90.212 ip4:136.145.92.50 ip4:136.145.126.204 ip4:136.145.211.13 ip4:136.145.211.16 ip4:136.145.218.97 ip4:136.145.218.98 ip4:136.145.219.77 ip4:136.145.244.34 ip4:136.145.252.137 ip4:165.193.85.48 ip4:165.193.85.49 ip6:2a01:111::/32 ip6:2603:10b6::/32 include:amazonses.com include:spf.protection.outlook.com include:rp.oracleemaildelivery.com include:_spf.google.com -all
apple-domain-verification=3gUnkN7Uz8Cysjb4
google-site-verification=YcmfW1RR5OaTgxtnaCbEcTrO2uPywLZeyhtJAw6I2v0
MS=ms31512335
_cywo8hayit5rry0a4oixpoe83klsjts
v=DMARC1; p=reject; rua=mailto:cartero@upr.edu; ruf=mailto:cartero@upr.edu; aspf=r; pct=100; rf=afrf; ri=86400; sp=none

NS 3

ns2.upr.edu
ns3.upr.edu
upr1.upr.edu

SOA 1

upr1.upr.edu felix\.ramos.upr.edu

TLS Certificates (4)

Common Name	Issuer	Expires
`upr.edu`	C=US, O=Let's Encrypt, CN=YE2	Mon, 12 Oct 2026 20:58:27 +0000
`YE2`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.upr.edu

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

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

Ed25519 Receipt

Receipt ID: d2275f3b-2915-420d-b0df-f860715e14b9
Output Hash: 73b40222aefd8aa695dabe7f5101a18d0530183a31add3f897c9313f722a70f0
Signature: ed25519:f1734cf53dbf3c63835ad41a1c3235e42ca0cfd60780b65257a4443766b60e1f760cc8a7e01f3014634cb3dba8c901f734101eb6cfe2cacdd9fb74630f53d508
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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