userfb.app

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

userfb.app serves a website of its own. It answers on both IPv4 and IPv6, with no TLS certificate and MX records for mail.

42,134,701 other domains share an IP address with it.

The most recent crawl returned the page title “UserFB - AI Live Chat + User Feedback Platform” and 105,446 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.app	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	no	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	no certificate	Shows whether the domain has a valid SSL certificate.
Redirects	0	Number of domains that redirect to this domain.
Reverse IP	42,134,701	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": "userfb.app"}'

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

No certificate data available for this domain.

Last successful crawl

Title	UserFB - AI Live Chat + User Feedback Platform
Description	UserFB unifies AI live chat and user feedback management: the AI answers 24/7 from your knowledge base, hands off to a human in one click, and collects user feedback with automatic AI moderation. Embed with one line of code to boost customer satisfaction and product experience.
Content-Length	105,446 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
163.181.214.25	10/20/2026
104.21.85.86	5/30/2026
172.67.203.251	5/30/2026
188.114.96.0	5/23/2026
188.114.97.0	5/23/2026

IPv6 address	Last updated
2404:2280:1bf:0:3:0:0:35	10/20/2026
2606:4700:3032:0:0:0:6815:5556	7/12/2026
2606:4700:3036:0:0:0:ac43:cbfb	7/12/2026
2606:4700:3031:0:0:0:6815:5556	5/30/2026
2606:4700:3037:0:0:0:ac43:cbfb	5/30/2026

Mail server	Priority	Last updated
mx1.feishu.cn	1	4/11/2026
mx2.feishu.cn	5	4/11/2026
mx3.feishu.cn	10	4/11/2026

Name server	Last updated
edna.ns.cloudflare.com	4/11/2026
noah.ns.cloudflare.com	4/11/2026
a.dnspod.com	10/9/2025
b.dnspod.com	10/9/2025
c.dnspod.com	10/9/2025

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

188.114.96.3 10,577,734 domains · here since 9/15/2026

Domain	On this IP since
zzzzzzzzz.xyz	10/6/2026
zzzzzzzzz.org	9/13/2026
zzzzzzzzum.icu	10/13/2026
zzzzzzzoes.site	10/16/2026
zzzzzzys.com	9/19/2026
zzzzzyl1.cn	10/14/2026
zzzzzwwwppodjfdkodkloq.com	9/28/2026
zzzzzssss55.online	9/16/2026
zzzzzssss55.buzz	9/20/2026
zzzzzsss77.online	9/20/2026
zzzzzssj.com	9/14/2026
zzzzzn.com	9/20/2026
and 10,577,721 more

188.114.97.3 10,577,732 domains · here since 9/15/2026

Domain	On this IP since
zzzzzzzzz.xyz	10/6/2026
zzzzzzzzz.org	9/13/2026
zzzzzzzzum.icu	10/13/2026
zzzzzzzoes.site	10/16/2026
zzzzzzys.com	9/19/2026
zzzzzyl1.cn	10/14/2026
zzzzzwwwppodjfdkodkloq.com	9/28/2026
zzzzzssss55.online	9/16/2026
zzzzzssss55.buzz	9/20/2026
zzzzzsss77.online	9/20/2026
zzzzzssj.com	9/14/2026
zzzzzn.com	9/20/2026
and 10,577,719 more

2a06:98c1:3120::3 10,489,619 domains · here since 9/15/2026

Domain	On this IP since
zzzzzzzzz.xyz	10/6/2026
zzzzzzzzz.org	10/19/2026
zzzzzzzzum.icu	10/13/2026
zzzzzzzoes.site	10/16/2026
zzzzzzys.com	9/19/2026
zzzzzyl1.cn	10/14/2026
zzzzzwwwppodjfdkodkloq.com	9/28/2026
zzzzzssss55.online	9/16/2026
zzzzzssss55.buzz	9/20/2026
zzzzzsss77.online	9/20/2026
zzzzzssj.com	9/14/2026
zzzzzn.com	9/20/2026
and 10,489,606 more

2a06:98c1:3121::3 10,489,616 domains · here since 9/15/2026

Domain	On this IP since
zzzzzzzzz.xyz	10/6/2026
zzzzzzzzz.org	10/19/2026
zzzzzzzzum.icu	10/13/2026
zzzzzzzoes.site	10/16/2026
zzzzzzys.com	9/19/2026
zzzzzyl1.cn	10/14/2026
zzzzzwwwppodjfdkodkloq.com	9/28/2026
zzzzzssss55.online	9/16/2026
zzzzzssss55.buzz	9/20/2026
zzzzzsss77.online	9/20/2026
zzzzzssj.com	9/14/2026
zzzzzn.com	9/20/2026
and 10,489,603 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!