Domain · Tranco #1,143
upenn.edu
upenn.edu is ranked #1,143 among the world's most-visited sites (Tranco). It resolves to 23.185.0.4, hosted on nginx, and presents a TLS certificate issued by Let's Encrypt.
HTTP 301| Tranco rank | #1,143 |
|---|---|
| IPv4 | 23.185.0.4 |
| IPv6 | 2620:12a:8001::4, 2620:12a:8000::4 |
| Hosting / reverse DNS | nginx |
| Nameservers | adns1.nnn.upenn.edu, adns2.nnn.upenn.edu, adns3.nnn.upenn.edu, adns4.upenn.edu |
| Mail servers (MX) | mxb-00390e01.gslb.pphosted.com (10), mxa-00390e01.gslb.pphosted.com (10) |
| HTTP status | 301 → https://www.upenn.edu/ |
| Web server | nginx |
| Detected tech | nginx |
| TLS certificate | Let's Encrypt · expires 2026-09-07 |
Notable DNS TXT records
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:spf.protection.outlook.com include:spf.penno365.isc.upenn.edu ~allgoogle-site-verification=USSLz8fKaD900NdBD87OEjo0zVYS1RwVyebE0-rN1IIanthropic-domain-verification-3mac1g=J3Hgt9mjdh1LaP7MtfIfyPJBvonetrust-domain-verification=114427d55783472c9c6399070d36a7a6jamf-site-verification=2LcBmAh3gm8z6JsJu3k_cQatlassian-domain-verification=maiZsC5JWjh1XYgMeCPA+Eu/1WPEcyn+n7TzXs5ukNzEV/GQRRHFl4jgohfUpHvV
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FAQ
What is the IP address of upenn.edu?
upenn.edu resolves to 23.185.0.4 (nginx).
Who issued the SSL certificate for upenn.edu?
The TLS/SSL certificate for upenn.edu was issued by Let's Encrypt, valid until 2026-09-07.
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Start free on Mewayz →DNS/HTTP/TLS observed 2026-08-06; registration data via RDAP. Informational only. Download JSON · CSV · Browse domains