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c21.com

United States Valid HTTPS 31.2 years Updated
AssessArrow · c21.com
Report ID: #33944C17 Verified
100
Very Safe
Verdict at a glance
IP Address18.225.65.154
Server LocationUnited States
RegistrarCSC Corporate Domains, Inc.
Domain Age31.2 years
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Century 21 on c21.com

c21.com points to Century 21, the long-running real estate franchise known for residential and commercial property services through a network of agents and offices. Its 1995 domain age, U.S. infrastructure, and valid SSL certificate all support a stable, established web presence.

IP Address · Server Location

18.225.65.154
United States · Columbus

SSL Certificate

Valid HTTPS
Amazon RSA 2048 M02
Valid Until: 2026-10-07

Registrar

CSC Corporate Domains, Inc.
Registered On: 1995-03-10
31.2 years

Very Safe

100/100
Verdict at a glance

Technical Overview

The domain c21.com is reachable and resolves to United States via Unknown. Below we walk through the most relevant signals one by one.

Maturity check

Maturity-wise, c21.com falls in the "mature" bracket — about 31.2 years on record. Most short-lived scams operate on domains under 12 months old, so age helps but does not exclude risk.

Browser compatibility

Mainstream browsers will accept c21.com's TLS configuration if our probe returns "OK". The current value is: OK.

Routing & ISP

Traffic to c21.com currently terminates at Unknown in United States — visible to anyone running a traceroute. Hosting-country mismatches with the brand audience can be a useful signal.

Beyond the technical score

A clean technical profile only proves c21.com follows industry plumbing standards. It does NOT prove honest content. Always read the actual site before transacting.

Bottom line

c21.com ends up at 100/100 — that is very_safe in our scale. The result is computed from public technical data only, no human review.

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What looks good

  • Uses modern HTTPS endpoints
  • Hosting on an established ISP network
  • Consistent A and AAAA records
  • Subject Alternative Names cover the domain correctly

What to watch

  • Reputation data is limited to public sources
  • Uses generic shared hosting (cannot identify operator from IP)
  • TXT records expose minimal trust hints

Frequently Asked Questions

What ISP serves c21.com?
The current network announcement comes from Unknown, with the IP geo-located in United States.
Where do I file a complaint about c21.com?
You can file a takedown notice with the registrar (CSC Corporate Domains, Inc.) or the hosting ISP (Unknown). Each maintains a public abuse channel.
Does c21.com have IPv6?
Our DNS lookup returns AAAA-record presence as part of the report. If absent, c21.com is currently IPv4-only.
When was c21.com's certificate last checked?
SSL data on c21.com is recomputed on every refresh. The summary box at the top shows the timestamp of the latest probe.
Is c21.com safe for online payments?
Infrastructure check returned SSL OK and a "very_safe" score. This is a baseline; never enter card data on a site you have not verified through other channels.

This report is generated automatically from public technical signals. It is not legal or financial advice.

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