duplex.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 4157 ms crawled 2026-05-18

US · 76.76.21.21 · AS16509 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: Home Page | Duplex
Language: en

Open Graph

title: Home Page | Duplex
locale: en_CA
site name: Duplex

Technology

CDN: Vercel
CMS: Next.js

Third-party hosts loaded (1)

cdn.sanity.io×14

Social

Registration

Registrar

NameCheap, Inc.

Created

1995-08-28

Expires

2027-08-27 464 days left

Updated

2024-07-16

Name servers

chuck.ns.cloudflare.com
marge.ns.cloudflare.com

DNS records live

NS

chuck.ns.cloudflare.com
marge.ns.cloudflare.com

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

TXT

Show 7 TXT records

3615442210
532F6180D8
ADE41CB148
MS=ms26089892
atlassian-domain-verification=nikZugvuFbL87iBr++s8i2DC2hTyP/Sa+vRpHrvpSi6dwtIQ/2zTIcwpegewh7KF
google-site-verification=pHddHMmNGTBb-tK0hKS6BkryARVwdNDpBO_wil3dT9A
30.10.2024

Email authentication partial

SPF

v=spf1 mx include:ne16.com ~all

softfail (~all)

DMARC

v=DMARC1; p=none;

policy: none (monitoring only)

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAol6OTEGEREec5xllHz729P+GsL9IXVwASzLDLkTzA8CailhlPSo2Lb6sTYrzy4laJ8LG5M31pPm7qA…

selectors probed

Certificate (current)

R13

from 2026-03-18 to 2026-06-16

Expires in 28 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.duplex.com/

present

strict-transport-security

findings

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

Header values

strict-transport-security: max-age=63072000