indexo.dev

kopperfield.com

.com crawl

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 719 ms crawled 2026-06-01

US · 76.76.21.21 · AS16509 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Smarter software for electricians | Kopperfield
Description
Discover the tools that make permit paperwork easy for electricians and electrical contractors, including load calculations, line diagrams, and panel schedules.
Language
en
Canonical
https://www.kopperfield.com

Open Graph

title
Smarter software for electricians | Kopperfield
description
Discover the tools that make permit paperwork easy for electricians and electrical contractors, including load calculations, line diagrams, and panel schedules.

Technology

CDN
Vercel
CMS
Next.js
Analytics
  • Google Tag Manager

Third-party hosts loaded (3)

  • cdn.builder.io×49
  • static.klaviyo.com×1
  • www.googletagmanager.com×1

Social

Contact

Email

Registration

Registrar
GoDaddy.com, LLC
Created
2021-09-27
Expires
2028-09-27 848 days left
Updated
2025-09-28
Name servers
  • ns51.domaincontrol.com
  • ns52.domaincontrol.com

DNS records live

NS
  • ns51.domaincontrol.com
  • ns52.domaincontrol.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
  • klaviyo-site-verification=XdTEbz
  • hubspot-developer-verification=Mjk4ZDhhM2UtNjhmYS00MmE3LWFiMDktMjJhZDNlNWRjYjE2
Verified for
  • Google

Email authentication partial

SPF
v=spf1 include:dc-aa8e722993._spfm.kopperfield.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:postmaster@kopperfield.com; pct=100; adkim=r; aspf=r
policy: none (monitoring only)
DKIM
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAm/bp4FQ6++3Olna83N60onRSkFbnXcrdUldTpd81TxRqq/uE/9MNpcxC4838J0vqrLD16LC5FFTJjI…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7yXrpN5OUUx6o2s26j8bmJqAxJjb93xCpJ12tfCg+wFpP4ZamDAhxq3cgBnUe76scQ/hp6s0apz/SlwbB1…
  • s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzy09PaG5dwKG9qo2tBvpsBRfaC/CKmLBRKZw3Se+QEqZFSVd9C0HTIskr09bjKCr6tA2oTMan2Tmn3gWkA…
selectors probed

Certificate (current)

R13
from 2026-05-11 to 2026-08-09
Expires in 68 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.kopperfield.com/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
findings
  • CSP uses wildcard sources
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
content-security-policy
frame-ancestors 'self' https://builder.io https://*.builder.io
strict-transport-security
max-age=63072000

Links to (6)

Linked from (1)