Dive into our data, search now!

We offer robust APIs and data services for domainers, data crawlers, security teams and many more.

384.5 M

Domains known to webXtrend

9.4 M

New domains in the last 30 days

62.6 M

Social media profiles detected

cat4.dev

cat4.dev serves a website of its own over HTTPS. It answers on both IPv4 and IPv6, with a valid TLS certificate and MX records for mail.

3,960 other domains share an IP address with it.

The most recent crawl returned the page title “CAT4.DEV - CTO as a Service” and 12,125 bytes of HTML.

Domain properties

Property Value Explanation
Top-level domain .dev 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. 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 3,960 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": "cat4.dev"}'

Create a free account Read the API docs

Detected social media networks

No social networks found on this website.

Similar websites

Website Similarity
t2it.org
t2it — IT Systems & AI Engineering
IT consulting, infrastructure, and private AI deployments. t2it builds systems that actually work.
 88 %
isb-solutions.com
ISB-SOLUTIONS · Freelance backend developer (.NET & Azure)
Freelance backend developer for startups, IT consultancies and tech teams. I build APIs, cloud infrastructure and AI integrations, and keep them running in p...
 87 %
bigdatasoup.com
BigDataSoup — Infrastructure, Data Center & Software Consulting
BigDataSoup — Cloud, data center, and on-prem infrastructure consulting, plus custom software for industrial and enterprise operations. 20+ years across DoD...
 87 %
makeru.xyz
Makeru — Software Development & IT Consulting
Makeru helps businesses build reliable software, automate operations, and scale their infrastructure.
 87 %
rockstardev.org
rockstardev - Wonderful IT Solutions
Wonderful IT Solutions. Start developing today for a better tomorrow.
 87 %
jurenterlabs.com
Jurenterlabs | Cloud, DevOps & AI Consulting
Jurenterlabs: Cloud, DevOps, AI and IT training consulting. Automation, infrastructure-as-code, and secure cloud architecture.
 87 %
fazevedo.dev
Filipe Azevedo - Systems & Infrastructure Engineer
Staff-level software engineer in Lisbon: backend systems in Rust and Go, infrastructure, and developer tooling. Contract work, remote or on-site.
 87 %
quasarcs.co.uk
Quasar CS | Platform Engineering, DevOps & AI
Quasar CS delivers Platform Engineering, DevOps and AI services that help teams ship faster and run reliable infrastructure.
 87 %
kardumovic.com
Benjamin Kardumovic
 87 %
algoventis.com
Algoventis - AI Integration & DevOps Engineering, Switzerland
Swiss consultancy helping companies integrate AI into their workflows and modernize their development infrastructure. Hands-on implementation, not slide decks.
 87 %
saplingit.uk
Sapling IT — Managed IT, DevOps & Cloud Engineering
Managed IT support, DevOps engineering and cloud infrastructure for growing UK businesses. GitLab CI, Terraform, Kubernetes, VMware and Office 365 — handled...
 87 %
tek2serve.com
Tek2Serve — Engineering that gets it done
Full-stack engineering studio. Infrastructure, automation, AI, custom development, cybersecurity & pen testing — built and maintained in production for busin...
 87 %
fullstacksolo.net
FullStack Solo LLC — Software, Infrastructure & IT Strategy
FullStack Solo LLC delivers custom software development, IT administration, and technology consulting. One engineer, the entire stack.
 87 %
franksworld.org
Franksworld Solutions, LLC — DevOps, Platform Engineering, AI & Mobile
Franksworld Solutions provides DevOps, platform engineering, Linux infrastructure, AI and mobile application development consulting.
 86 %
wcox.co.uk
Westley Cox — IT Professional
Professional IT portfolio — infrastructure, cloud, security and automation.
 86 %
chozar.com
Managed IT, Cloud & Custom Software Development — Chozar
Chozar Technologies designs, builds and operates the systems businesses run on — network and infrastructure, cloud and DevOps, custom software, and applied AI.
 86 %
jeremy.ninja
Jeremy.Ninja | First Class Integrator of Software & Solutions
Jeremy Ninja - First class integrator of software and solutions. Cloud architecture, DevOps, API integration, and custom software.
 86 %
vg.mk
Vasil Gosev — Full-Stack Developer, SaaS, DevOps & Hardware Integration
Vasil Gosev builds full-stack web applications, SaaS platforms, APIs, Linux infrastructure, automations, AI-assisted workflows and hardware integrations incl...
 86 %
thesingularitybox.com
Singularity Box — Cloud, DevOps, Security & AI, under one roof
Singularity Box designs, deploys, and operates the entire tech stack behind modern startups: cloud & DevOps, networking, cybersecurity, software, APIs and AI.
 86 %
sumit.engineer
Sumit • Backend Developer & DevOps Engineer
Backend developer and DevOps engineer specializing in self-hosted infrastructure, Linux systems, and scalable web services.
 86 %

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 Google Trust Services
Valid from 9/14/2026
Valid to 12/13/2026
Time until expiry 55 days

Last successful crawl

Title CAT4.DEV - CTO as a Service
Description Fractional CTO, DevOps, infrastructure, and AI integration for teams and early-stage startups.
Content-Length 12,125 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
104.21.59.186 5/11/2026
172.67.182.112 5/11/2026
188.114.96.0 5/4/2026
188.114.97.0 5/4/2026
104.21.59.186 4/13/2026
IPv6 address Last updated
2606:4700:3032:0:0:0:ac43:b670 6/29/2026
2606:4700:3036:0:0:0:6815:3bba 6/29/2026
2606:4700:3032:0:0:0:ac43:b670 5/26/2026
2606:4700:3037:0:0:0:6815:3bba 5/26/2026
2a06:98c1:3120:0:0:0:0:0 5/18/2026
Mail server Priority Last updated
mail.anonaddy.me 10 2/9/2025
mail2.anonaddy.me 20 2/9/2025
mail.cat4.dev 10 1/12/2025
Name server Last updated
kinsley.ns.cloudflare.com 10/11/2025
lamar.ns.cloudflare.com 10/11/2025
ns1.afraid.org 1/12/2025
ns2.afraid.org 1/12/2025
ns3.afraid.org 1/12/2025

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

104.21.59.186 992 domains · here since 9/17/2026
Domain On this IP since
zzzrouter.com 9/14/2026
zxxjyzwh.org.cn 9/12/2026
zumospin.cz 9/15/2026
zjjxdhmy.com 10/17/2026
zionfire.net 9/22/2026
zgccj.shop 9/16/2026
zenithedgecode.buzz 9/15/2026
zbahis-girisi.top 10/5/2026
yzhjlw.com 10/18/2026
yylgvw.com 10/12/2026
yxn600.cc 9/18/2026
yumbox.me 10/7/2026
and 979 more
172.67.182.112 992 domains · here since 9/17/2026
Domain On this IP since
zzzrouter.com 9/14/2026
zxxjyzwh.org.cn 9/12/2026
zumospin.cz 9/15/2026
zjjxdhmy.com 10/17/2026
zionfire.net 9/22/2026
zgccj.shop 9/16/2026
zenithedgecode.buzz 9/15/2026
zbahis-girisi.top 10/5/2026
yzhjlw.com 10/18/2026
yylgvw.com 10/12/2026
yxn600.cc 9/18/2026
yumbox.me 10/7/2026
and 979 more
2606:4700:3032::ac43:b670 988 domains · here since 9/17/2026
Domain On this IP since
zzzrouter.com 9/14/2026
zxxjyzwh.org.cn 9/12/2026
zumospin.cz 9/15/2026
zjjxdhmy.com 10/17/2026
zionfire.net 9/22/2026
zgccj.shop 9/16/2026
zenithedgecode.buzz 9/15/2026
zbahis-girisi.top 10/5/2026
yzhjlw.com 10/18/2026
yylgvw.com 10/12/2026
yxn600.cc 9/18/2026
yumbox.me 10/7/2026
and 975 more
2606:4700:3036::6815:3bba 988 domains · here since 9/17/2026
Domain On this IP since
zzzrouter.com 9/14/2026
zxxjyzwh.org.cn 9/12/2026
zumospin.cz 9/15/2026
zjjxdhmy.com 10/17/2026
zionfire.net 9/22/2026
zgccj.shop 9/16/2026
zenithedgecode.buzz 9/15/2026
zbahis-girisi.top 10/5/2026
yzhjlw.com 10/18/2026
yylgvw.com 10/12/2026
yxn600.cc 9/18/2026
yumbox.me 10/7/2026
and 975 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.