jhalderm.com

.com crawl

First seen 2026-04-14 · Last seen 2026-05-11 · ok HTTP/1.1 200 211 ms crawled 2026-05-07

US · 185.199.108.153 · AS54113 Fastly, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: J. Alex Halderman
Description: J. Alex Halderman, professor of computer science and engineering at the University of Michigan
Language: en

Technology

CDN: Fastly
Server: GitHub.com

Social

Contact

Phone

48109-2121

Address

rd StreetAnn Arbor, MI 48109

Registration

Registrar

Porkbun LLC

Created

2009-01-27

Expires

2027-01-27 253 days left

Updated

2026-01-26

Name servers

curitiba.ns.porkbun.com
fortaleza.ns.porkbun.com
maceio.ns.porkbun.com
salvador.ns.porkbun.com

DNS records live

NS

curitiba.ns.porkbun.com
fortaleza.ns.porkbun.com
maceio.ns.porkbun.com
salvador.ns.porkbun.com

Email authentication no MX

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-04-01 to 2026-06-30

Expires in 43 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://jhalderm.com/

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy