indexo.dev

opus1.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-08 · ok HTTP/1.1 200 6996 ms crawled 2026-05-11

US · 192.245.12.152 · AS6373 Opus One

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Opus One®
Description
Opus One is a consulting and information services company specializing in networking, electronic mail, and security.

Technology

Server
Apache

Contact

Email

Registration

Registrar
Network Solutions, LLC
Created
1992-10-19
Expires
2033-10-18 2709 days left
Updated
2024-09-02
Name servers
  • ns.opus1.com
  • ns1.arizona.edu
  • ns2.arizona.edu
  • ns3.arizona.edu
  • ns4.arizona.edu
  • ns6.opus1.com

DNS records live

NS
  • ns.opus1.com
  • ns1.arizona.edu
  • ns2.arizona.edu
  • ns3.arizona.edu
  • ns4.arizona.edu
  • ns6.opus1.com
MX
  • 1000 in1-smtp.messagingengine.com
  • 1020 in2-smtp.messagingengine.com

Email authentication partial

SPF
v=spf1 include:spf.messagingengine.com a mx ptr ip4:192.245.12.0/24 ip6:2001:0428:AA02:0400::/56 ?all
neutral (?all)
DMARC
v=DMARC1; p=none; aspf=r; adkim=r; fo=0
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

Sectigo Public Server Authentication CA DV R36
from 2026-03-04 to 2027-03-05
Expires in 290 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://opus1.com/

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

Links to (1)

Linked from (1)