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385.2 M

Domains known to webXtrend

9.8 M

New domains in the last 30 days

62.8 M

Social media profiles detected

unlearn.dev

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

unlearn.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.

4,105 other domains share an IP address with it.

The most recent crawl returned the page title “Developer Education for the AI Era | Unlearn.dev” and 402,586 bytes of HTML. The site links to X, YouTube and LinkedIn profiles.

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 4,105 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": "unlearn.dev"}'

Create a free account Read the API docs

Detected social media networks

UnlearnDev
UnlearnDev
unlearn-dev

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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 8/26/2026
Valid to 11/24/2026
Time until expiry 32 days

Last successful crawl

Title Developer Education for the AI Era | Unlearn.dev
Description AI solved the easy half of your job, now what? Turn AI into your execution team. Workflows, MCP servers, and AI skills for the engineer calling the shots.
Content-Length 402,586 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
104.21.55.52 10/2/2026
172.67.144.212 10/2/2026
75.2.60.5 4/2/2026
99.83.231.61 4/2/2026
104.21.55.52 3/4/2026
IPv6 address Last updated
2606:4700:3031:0:0:0:ac43:90d4 10/2/2026
2606:4700:3036:0:0:0:6815:3734 10/2/2026
2606:4700:3035:0:0:0:ac43:90d4 3/4/2026
2606:4700:3036:0:0:0:6815:3734 3/4/2026
Mail server Priority Last updated
smtp.google.com 1 3/11/2026
eforward1.registrar-servers.com 10 3/4/2026
eforward2.registrar-servers.com 10 3/4/2026
eforward3.registrar-servers.com 10 3/4/2026
eforward4.registrar-servers.com 15 3/4/2026
Name server Last updated
courtney.ns.cloudflare.com 3/4/2026
darl.ns.cloudflare.com 3/4/2026
ns-cloud-e1.googledomains.com 12/12/2023
ns-cloud-e2.googledomains.com 12/12/2023
ns-cloud-e3.googledomains.com 12/12/2023

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

104.21.55.52 1,031 domains · here since 10/3/2026
Domain On this IP since
zzymsy.com 9/21/2026
zrjogosi.com 10/10/2026
zo88.cx 9/12/2026
ziyangqiche.com 9/12/2026
zitaenglish.com 10/8/2026
zhongquancoin.cn 10/4/2026
zhongjinghr.com 9/27/2026
zh-home-pggames.com.cn 10/7/2026
zek-ai.com.tr 9/21/2026
zalupadomen.top 10/1/2026
za55spa.com 10/10/2026
yuehongxin.net 9/12/2026
and 1,018 more
172.67.144.212 1,031 domains · here since 10/3/2026
Domain On this IP since
zzymsy.com 9/21/2026
zrjogosi.com 10/10/2026
zo88.cx 9/12/2026
ziyangqiche.com 9/12/2026
zitaenglish.com 10/8/2026
zhongquancoin.cn 10/4/2026
zhongjinghr.com 9/27/2026
zh-home-pggames.com.cn 10/7/2026
zek-ai.com.tr 9/21/2026
zalupadomen.top 10/1/2026
za55spa.com 10/10/2026
yuehongxin.net 9/12/2026
and 1,018 more
2606:4700:3036::6815:3734 1,022 domains · here since 10/3/2026
Domain On this IP since
zzymsy.com 9/21/2026
zrjogosi.com 10/10/2026
zo88.cx 9/12/2026
ziyangqiche.com 9/12/2026
zitaenglish.com 10/8/2026
zhongquancoin.cn 10/4/2026
zhongjinghr.com 9/15/2026
zh-home-pggames.com.cn 9/14/2026
zek-ai.com.tr 9/21/2026
zalupadomen.top 10/1/2026
za55spa.com 10/10/2026
yuehongxin.net 9/12/2026
and 1,009 more
2606:4700:3031::ac43:90d4 1,021 domains · here since 10/3/2026
Domain On this IP since
zzymsy.com 9/21/2026
zrjogosi.com 10/10/2026
zo88.cx 9/12/2026
ziyangqiche.com 9/12/2026
zitaenglish.com 10/8/2026
zhongquancoin.cn 10/4/2026
zhongjinghr.com 9/15/2026
zh-home-pggames.com.cn 9/14/2026
zek-ai.com.tr 9/21/2026
zalupadomen.top 10/1/2026
za55spa.com 10/10/2026
yuehongxin.net 9/12/2026
and 1,008 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.