certopic.com

Get an email when its DNS, website or certificate changes.

certopic.com serves a website of its own over HTTPS and under www. It answers on IPv4 only, with a valid TLS certificate.

2,880,987 other domains share an IP address with it, and one domain redirects to it.

The most recent crawl returned the page title “Free Practice Questions for AWS, Azure, Security+, CISSP & More (2026)” and 63,173 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	no	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	1	Number of domains that redirect to this domain.
Reverse IP	2,880,987	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": "certopic.com"}'

Create a free account Read the API docs

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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	Let's Encrypt
Valid from	9/10/2026
Valid to	12/8/2026
Time until expiry	49 days

Last successful crawl

Title	Free Practice Questions for AWS, Azure, Security+, CISSP & More (2026)
Description	Practice exam questions for the most in-demand IT and cybersecurity certifications. Free, fast, and interactive. Study in Practice Mode or Exam Mode with scoring at the end.
Content-Length	63,173 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
185.199.108.153	3/20/2026
185.199.109.153	3/20/2026
185.199.110.153	3/20/2026
185.199.111.153	3/20/2026

Name server	Last updated
dean.ns.cloudflare.com	3/20/2026
rosemary.ns.cloudflare.com	3/20/2026

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
uaidan.com	3/25/2026

Reverse IP neighbours

185.199.108.153 744,078 domains · here since 9/19/2026

Domain	On this IP since
zzzzsky.com	9/23/2026
zzzzquan.cn	9/18/2026
zzzzjuttzone.site	9/14/2026
zzzyss.top	9/18/2026
zzzstudios.de	10/18/2026
zzzstrongtea.com	9/21/2026
zzzppplll.cn	9/22/2026
zzzpband.com	9/16/2026
zzzoo.app	9/23/2026
zzzmisa.com	9/16/2026
zzzm.online	9/13/2026
zzzionline.com	9/20/2026
and 744,065 more

185.199.109.153 715,949 domains · here since 9/19/2026

Domain	On this IP since
zzzzsky.com	9/23/2026
zzzzquan.cn	9/18/2026
zzzzjuttzone.site	9/14/2026
zzzyss.top	9/18/2026
zzzstudios.de	10/18/2026
zzzstrongtea.com	9/21/2026
zzzppplll.cn	9/22/2026
zzzpband.com	9/16/2026
zzzoo.app	9/23/2026
zzzmisa.com	9/16/2026
zzzm.online	9/13/2026
zzzionline.com	9/20/2026
and 715,936 more

185.199.110.153 710,880 domains · here since 9/19/2026

Domain	On this IP since
zzzzsky.com	9/23/2026
zzzzquan.cn	9/18/2026
zzzzjuttzone.site	9/14/2026
zzzyss.top	9/18/2026
zzzstudios.de	10/18/2026
zzzstrongtea.com	9/21/2026
zzzppplll.cn	9/22/2026
zzzpband.com	9/16/2026
zzzoo.app	9/23/2026
zzzmisa.com	9/16/2026
zzzm.online	9/13/2026
zzzionline.com	9/20/2026
and 710,867 more

185.199.111.153 710,080 domains · here since 9/19/2026

Domain	On this IP since
zzzzsky.com	9/23/2026
zzzzquan.cn	9/18/2026
zzzzjuttzone.site	9/14/2026
zzzyss.top	9/18/2026
zzzstudios.de	10/18/2026
zzzstrongtea.com	9/21/2026
zzzppplll.cn	9/22/2026
zzzpband.com	9/16/2026
zzzoo.app	9/23/2026
zzzmisa.com	9/16/2026
zzzm.online	9/13/2026
zzzionline.com	9/20/2026
and 710,067 more

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.

Dive into our data, search now!