gerlingermd.com

.com crawl

First seen 2026-05-26 · Last seen 2026-05-30 · ok HTTP/1.1 200 3085 ms crawled 2026-05-30

US · 54.86.182.166 · AS14618 Amazon.com, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Dr Tad Gerlinger | Orthopedic Surgeon Chicago | Hip Surgeon Westchester
Description: Dr Tad Gerlinger is an orthopedic hip surgeon in Chicago, Northwest Indiana, Westchester, Oak Brook and Munster. He offers hip reconstruction, knee reconstruction, hip replacement and knee replacement.
Language: en

Technology

Server: Apache

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (4)

fonts.googleapis.com×3
ckm.yourpractice.online×1
www.googletagmanager.com×1
www.ypo.education×1

Social

Contact

Phone

+13124322429

Registration

Registrar

GoDaddy.com, LLC

Created

2016-10-26

Expires

2027-10-26 511 days left

Updated

2025-10-27

Name servers

ns19.yourpracticeonline.com
ns20.yourpracticeonline.com

DNS records live

NS

ns19.yourpracticeonline.com
ns20.yourpracticeonline.com

MX

0 ns19.yourpracticeonline.com

Email authentication weak

SPF

v=spf1 ip4:54.86.182.166 ip4:52.20.121.186 +a +mx ~all

softfail (~all)

DMARC

not published

DKIM

default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwk5gUa/5Do9J9VFLAJfya/1f73GOVksgTMuFpf4Lcc4liQt+Ki+9ormc3lbNTvo/dmIcjnGbg5DZHp…

selectors probed

Certificate (current)

R12

from 2026-04-07 to 2026-07-06

Expires in 34 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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