prepfile.work

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

prepfile.work serves a website of its own over HTTPS. It answers on both IPv4 and IPv6, with a valid TLS certificate.

Its busiest IP address is shared with 1,108 other domains.

The most recent crawl returned the page title “PrepFile — AI Interview Prep Briefs” and 5,556 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.work	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.	no	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	Both	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	4,418	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": "prepfile.work"}'

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	9/4/2026
Valid to	12/3/2026
Time until expiry	39 days

Last successful crawl

Title	PrepFile — AI Interview Prep Briefs
Description	PrepFile generates AI-powered interview prep briefs in 60 seconds. Company intel, role expectations, interview questions, and blind spots — personalized to the company and role you're interviewing for.
Content-Length	5,556 bytes

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

DNS history

IPv4 address	First seen
104.21.86.33	3/13/2026
172.67.214.103	3/13/2026

IPv6 address	First seen
2606:4700:3033:0:0:0:6815:5621	6/25/2026
2606:4700:3037:0:0:0:ac43:d667	6/25/2026
2606:4700:3030:0:0:0:ac43:d667	3/13/2026
2606:4700:3032:0:0:0:6815:5621	3/13/2026

Name server	First seen
damian.ns.cloudflare.com	3/13/2026
saanvi.ns.cloudflare.com	3/13/2026

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

104.21.86.33 1,109 domains · here since 9/15/2026

Domain	On this IP since
zz-w-youdao.com.cn	10/18/2026
zx777vip.org	9/15/2026
zv999.net	9/15/2026
zs8.buzz	10/13/2026
zoty87.vip	9/12/2026
zorowind.com	9/22/2026
zonesnack99.com	10/7/2026
ziboplay.co	10/2/2026
zainwebagency.com	9/16/2026
yy3cu3wf2.com	10/18/2026
yvsnvtx62jc777j.xyz	9/28/2026
youfactorus.co	9/18/2026
and 1,096 more

172.67.214.103 1,109 domains · here since 9/15/2026

Domain	On this IP since
zz-w-youdao.com.cn	10/18/2026
zx777vip.org	9/15/2026
zv999.net	9/15/2026
zs8.buzz	10/13/2026
zoty87.vip	9/12/2026
zorowind.com	9/22/2026
zonesnack99.com	10/7/2026
ziboplay.co	10/2/2026
zainwebagency.com	9/16/2026
yy3cu3wf2.com	10/18/2026
yvsnvtx62jc777j.xyz	9/28/2026
youfactorus.co	9/18/2026
and 1,096 more

2606:4700:3033::6815:5621 1,100 domains · here since 9/15/2026

Domain	On this IP since
zz-w-youdao.com.cn	10/18/2026
zx777vip.org	9/15/2026
zv999.net	9/15/2026
zs8.buzz	10/13/2026
zoty87.vip	9/12/2026
zorowind.com	9/22/2026
zonesnack99.com	10/7/2026
ziboplay.co	10/2/2026
zainwebagency.com	9/16/2026
yy3cu3wf2.com	10/18/2026
yvsnvtx62jc777j.xyz	9/28/2026
youfactorus.co	9/18/2026
and 1,087 more

2606:4700:3037::ac43:d667 1,100 domains · here since 9/15/2026

Domain	On this IP since
zz-w-youdao.com.cn	10/18/2026
zx777vip.org	9/15/2026
zv999.net	9/15/2026
zs8.buzz	10/13/2026
zoty87.vip	9/12/2026
zorowind.com	9/22/2026
zonesnack99.com	10/7/2026
ziboplay.co	10/2/2026
zainwebagency.com	9/16/2026
yy3cu3wf2.com	10/18/2026
yvsnvtx62jc777j.xyz	9/28/2026
youfactorus.co	9/18/2026
and 1,087 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!