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383.2 M

Domains known to webXtrend

9.1 M

New domains in the last 30 days

62.3 M

Social media profiles detected

grc.com

grc.com serves a website of its own over HTTPS and under www. It answers on IPv4 only, with a valid TLS certificate and MX records for mail.

One other domain shares an IP address with it, and 14 domains redirect to it.

The most recent crawl returned the page title “Home of Gibson Research Corporation” and 12,600 bytes of HTML.

Domain properties

Property Value Explanation
Top-level domain .com Statistics for all domains we know under this TLD.
Has website yes A website is hosted under the domain, which does not redirect to an external domain.
Has MX-record yes The domain has an MX record.
External redirect no The domain redirects to another domain.
Redirect to https yes The domain redirects to https.
Redirect to www. yes The domain redirects to www.domain.
Only with www. no The domain can only be reached with the subdomain "www".
Only DNS, no website no There are no A or AAAA records in DNS.
IP-Address only IPv4 Shows whether the domain only has IPv4 or IPv6 or both.
SSL-Certificate valid Shows whether the domain has a valid SSL certificate.
Redirects 14 Number of domains that redirect to this domain.
Reverse IP 1 Number of domains with the same IP(s).

This data through the API

The data on this page is also available as JSON: /lookup for the key facts, /reverseip, /redirect and /similar for the lists, and /dnshistory with Basic and Premium. A free account comes with an API key and 100 calls a day.

curl -X POST https://api.webxtrend.com/v1.0/lookup \
  -H 'Content-Type: application/json' \
  -d '{"token": "YOUR_TOKEN", "query": "grc.com"}'

Create a free account Read the API docs

Detected social media networks

No social networks found on this website.

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Websites whose start page offers something similar, found by comparing the text of their start pages, across languages. Near-identical copies, parking pages and error pages are left out. The full list of up to 100 comes through the API: similar websites.

Last SSL certificate

Issuer DigiCert Inc
Valid from 2/23/2026
Valid to 3/27/2027
Time until expiry 164 days

Last successful crawl

Title Home of Gibson Research Corporation
Description Steve Gibson's and Gibson Research Corporation's Web homepage.
Content-Length 12,600 bytes

Title and description as published by the page itself in its own <title> and <meta name="description"> tags.

DNS history

IPv4 address Last updated
4.79.142.200 12/8/2023
Mail server Priority Last updated
grc.com 10 1/3/2024
Name server Last updated
ns3.level3.net 7/28/2026
ns4.level3.net 7/28/2026
ns4.customer.level3.net 12/8/2023
ns6.customer.level3.net 12/8/2023

The five most recent states of each record type. The full history comes through the API: DNS history.

Most recent redirect domains

Domain Last seen
sqrl.pw 10/13/2026
sqrl.be 10/12/2026
securityfail.com 10/7/2026
felixwojo.com 10/5/2026
spinrite.com 10/3/2026
grctech.com 9/14/2026
sqrlid.com 9/19/2025
rsjhoa.com 2/7/2025
linkinpeeps.com 11/20/2024
linkingpeeps.com 11/20/2024
sqrl.org 9/15/2024
tyrannyofthedefault.com 4/24/2024
and 2 more

Reverse IP neighbours

4.79.142.200 1 domain · here since 9/21/2026
Domain On this IP since
No other domains on this address.

Sharing an address does not always mean sharing a server: on a CDN or a large hosting platform, millions of unrelated domains answer on the same few addresses. We measured how far that goes in Half the web sits on 276 IP addresses. The complete list of neighbours, also for an IP address, comes through the API: reverse IP lookup.