classfactor.com

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

classfactor.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.

251,467 other domains share an IP address with it.

The most recent crawl returned the page title “ClassFactor — AI flashcards, quizzes, and a tutor that explains” and 206,669 bytes of HTML. The site links to Instagram, X, TikTok and LinkedIn profiles.

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	0	Number of domains that redirect to this domain.
Reverse IP	251,467	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": "classfactor.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	9/6/2026
Valid to	12/5/2026
Time until expiry	44 days

Last successful crawl

Title	ClassFactor — AI flashcards, quizzes, and a tutor that explains
Description	Upload any class material and ClassFactor turns it into flashcards, notes, guided lessons, quizzes and timed exams — with an AI Tutor that explains what you miss, a Study Coach that keeps you on track, and spaced repetition that makes it stick.
Content-Length	206,669 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
216.150.1.129	10/18/2026
216.150.16.129	10/18/2026
216.150.1.65	10/10/2026
216.150.16.65	10/10/2026
216.150.1.129	10/1/2026

Mail server	Priority	Last updated
smtp.google.com	1	8/14/2026
mx10.antispam.mailspamprotection.com	10	10/13/2025
mx20.antispam.mailspamprotection.com	20	10/13/2025
mx30.antispam.mailspamprotection.com	30	10/13/2025

Name server	Last updated
hunts.ns.cloudflare.com	7/10/2026
ximena.ns.cloudflare.com	7/10/2026
ns1.siteground.net	10/13/2025
ns2.siteground.net	10/13/2025
ns1.bodis.com	5/13/2025

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

Most recent redirect domains

No domains found.

Reverse IP neighbours

216.150.1.129 126,338 domains · here since 10/8/2026

Domain	On this IP since
zzzyo.com	10/12/2026
zzxwts.info	10/1/2026
zzstable.com	10/10/2026
zzpugz.hr	9/27/2026
zzpchat.com	9/29/2026
zzntmr.info	10/19/2026
zzkkcc.com	10/5/2026
zzjprf.info	10/20/2026
zzfunnels.co	10/17/2026
zzen.io	10/17/2026
zzart.app	10/19/2026
zzaraauntiez.com	10/5/2026
and 126,325 more

216.150.16.129 125,129 domains · here since 10/8/2026

Domain	On this IP since
zzyt87.com	10/15/2026
zzwdhq.info	10/16/2026
zzpcalc.com	10/3/2026
zzntmr.info	10/7/2026
zzkkcc.com	10/5/2026
zzfunnels.co	10/17/2026
zzaraauntiez.com	10/17/2026
zyvftm.info	10/17/2026
zyveai.com	9/28/2026
zysk.tech	10/19/2026
zyrven.info	10/16/2026
zyroninstudio.app	10/6/2026
and 125,116 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!