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384.9 M

Domains known to webXtrend

9.7 M

New domains in the last 30 days

62.8 M

Social media profiles detected

mroczek.dev

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

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

4,366 other domains share an IP address with it.

The most recent crawl returned the page title “Przemek Mroczek | Senior Backend Engineer, AI & System Architecture” and 77,856 bytes of HTML. The site links to Instagram, X, TikTok, 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 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 4,366 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": "mroczek.dev"}'

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 Google Trust Services
Valid from 9/30/2026
Valid to 12/29/2026
Time until expiry 68 days

Last successful crawl

Title Przemek Mroczek | Senior Backend Engineer, AI & System Architecture
Description Przemek Mroczek, senior backend engineer with 13+ years of experience in Ruby on Rails, AI integration, and system architecture. Writing about distributed systems, self-hosting, and building things the right way.
Content-Length 77,856 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
104.21.21.142 4/13/2026
172.67.199.29 4/13/2026
IPv6 address Last updated
2606:4700:3033:0:0:0:ac43:c71d 6/28/2026
2606:4700:3034:0:0:0:6815:158e 6/28/2026
2606:4700:3033:0:0:0:6815:158e 5/10/2026
2606:4700:3035:0:0:0:ac43:c71d 5/10/2026
2a06:98c1:3120:0:0:0:0:0 4/19/2026
Mail server Priority Last updated
route2.mx.cloudflare.net 1 7/1/2024
route1.mx.cloudflare.net 49 7/1/2024
route3.mx.cloudflare.net 98 7/1/2024
Name server Last updated
damon.ns.cloudflare.com 4/13/2026
savanna.ns.cloudflare.com 4/13/2026
charles.ns.cloudflare.com 7/1/2024
evelyn.ns.cloudflare.com 7/1/2024

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

104.21.21.142 1,098 domains · here since 10/21/2026
Domain On this IP since
zorvexa09.online 9/28/2026
zoreva.xyz 9/20/2026
zmngt5.buzz 9/22/2026
zjwlx.cn 9/23/2026
zhuhao.de 10/10/2026
zeva.com.ar 10/12/2026
zentrumfuermigrationshilfe.ch 9/16/2026
zenithnovacobaltcrest.xyz 9/19/2026
zelizabutik.com 10/21/2026
zeitless.app 9/17/2026
zeapli.click 9/16/2026
zealot-store.com 10/14/2026
and 1,085 more
172.67.199.29 1,098 domains · here since 10/21/2026
Domain On this IP since
zorvexa09.online 9/28/2026
zoreva.xyz 9/20/2026
zmngt5.buzz 9/22/2026
zjwlx.cn 9/23/2026
zhuhao.de 10/10/2026
zeva.com.ar 10/12/2026
zentrumfuermigrationshilfe.ch 9/16/2026
zenithnovacobaltcrest.xyz 9/19/2026
zelizabutik.com 10/21/2026
zeitless.app 9/17/2026
zeapli.click 9/16/2026
zealot-store.com 10/14/2026
and 1,085 more
2606:4700:3033::ac43:c71d 1,085 domains · here since 10/21/2026
Domain On this IP since
zorvexa09.online 9/28/2026
zoreva.xyz 9/20/2026
zkfc.me 10/14/2026
zjwlx.cn 9/23/2026
zhuhao.de 10/10/2026
zeva.com.ar 10/12/2026
zentrumfuermigrationshilfe.ch 9/16/2026
zenithnovacobaltcrest.xyz 9/19/2026
zelizabutik.com 10/21/2026
zeitless.app 9/17/2026
zeapli.click 9/16/2026
zealot-store.com 10/14/2026
and 1,072 more
2606:4700:3034::6815:158e 1,085 domains · here since 10/21/2026
Domain On this IP since
zorvexa09.online 9/28/2026
zoreva.xyz 9/20/2026
zkfc.me 10/14/2026
zjwlx.cn 9/23/2026
zhuhao.de 10/10/2026
zeva.com.ar 10/12/2026
zentrumfuermigrationshilfe.ch 9/16/2026
zenithnovacobaltcrest.xyz 9/19/2026
zelizabutik.com 10/21/2026
zeitless.app 9/17/2026
zeapli.click 9/16/2026
zealot-store.com 10/14/2026
and 1,072 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.