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384.6 M

Domains known to webXtrend

9.6 M

New domains in the last 30 days

62.8 M

Social media profiles detected

unfour.dev

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

unfour.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.

3,698 other domains share an IP address with it.

The most recent crawl returned the page title “Unfour — Local-first Backend & DevOps Workspace” and 39,922 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 3,698 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": "unfour.dev"}'

Create a free account Read the API docs

Detected social media networks

No social networks found on this website.

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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 Google Trust Services
Valid from 8/27/2026
Valid to 11/25/2026
Time until expiry 35 days

Last successful crawl

Title Unfour — Local-first Backend & DevOps Workspace
Description Investigate API requests, SSH logs, and database state in one local-first Backend / DevOps workspace. Use Codex or Cursor through MCP; Flow runbooks save repeatable checks.
Content-Length 39,922 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
104.21.49.193 7/5/2026
172.67.166.147 7/5/2026
IPv6 address Last updated
2606:4700:3032:0:0:0:6815:31c1 7/20/2026
2606:4700:3034:0:0:0:ac43:a693 7/20/2026
2606:4700:3030:0:0:0:6815:31c1 7/5/2026
2606:4700:3034:0:0:0:ac43:a693 7/5/2026
Mail server Priority Last updated
route2.mx.cloudflare.net 55 7/5/2026
route3.mx.cloudflare.net 95 7/5/2026
route1.mx.cloudflare.net 98 7/5/2026
Name server Last updated
drake.ns.cloudflare.com 7/5/2026
sloan.ns.cloudflare.com 7/5/2026

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

104.21.49.193 927 domains · here since 9/16/2026
Domain On this IP since
zqwk.net 10/13/2026
zorgvoordezaak.com 9/23/2026
zonalads.com 9/14/2026
zomclub.work 9/22/2026
zkera.fi 9/15/2026
zionvale.id 9/15/2026
zinkeze.com 9/14/2026
zhifuaitech.com 10/1/2026
zeus138opo.lat 9/17/2026
yvasclk.info 9/19/2026
yuuy.jp 9/23/2026
ypong.cn 9/21/2026
and 914 more
172.67.166.147 927 domains · here since 9/16/2026
Domain On this IP since
zqwk.net 10/13/2026
zorgvoordezaak.com 9/23/2026
zonalads.com 9/14/2026
zomclub.work 9/22/2026
zkera.fi 9/15/2026
zionvale.id 9/15/2026
zinkeze.com 9/14/2026
zhifuaitech.com 10/1/2026
zeus138opo.lat 9/17/2026
yvasclk.info 9/19/2026
yuuy.jp 9/23/2026
ypong.cn 9/21/2026
and 914 more
2606:4700:3032::6815:31c1 922 domains · here since 9/16/2026
Domain On this IP since
zqwk.net 10/13/2026
zorgvoordezaak.com 9/23/2026
zonalads.com 9/14/2026
zomclub.work 9/22/2026
zkera.fi 9/15/2026
zionvale.id 9/15/2026
zinkeze.com 9/14/2026
zhifuaitech.com 9/19/2026
zeus138opo.lat 9/17/2026
yvasclk.info 9/19/2026
yuuy.jp 9/23/2026
ypong.cn 9/21/2026
and 909 more
2606:4700:3034::ac43:a693 922 domains · here since 9/16/2026
Domain On this IP since
zqwk.net 10/13/2026
zorgvoordezaak.com 9/23/2026
zonalads.com 9/14/2026
zomclub.work 9/22/2026
zkera.fi 9/15/2026
zionvale.id 9/15/2026
zinkeze.com 9/14/2026
zhifuaitech.com 9/19/2026
zeus138opo.lat 9/17/2026
yvasclk.info 9/19/2026
yuuy.jp 9/23/2026
ypong.cn 9/21/2026
and 909 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.