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385.4 M

Domains known to webXtrend

9.9 M

New domains in the last 30 days

62.7 M

Social media profiles detected

functional-programming.net

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

functional-programming.net serves a website of its own. It answers on IPv4 only, with no TLS certificate.

Its busiest IP address is shared with 17,652 other domains.

The most recent crawl returned the page title “Functional Programming in C# and F#” and 22,868 bytes of HTML. The site links to X.

Domain properties

Property Value Explanation
Top-level domain .net 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 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 only IPv4 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 32,452 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": "functional-programming.net"}'

Create a free account Read the API docs

Detected social media networks

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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 Functional Programming in C# and F#
Description Interested in using functional programming in C# and F#? This page gives you all the information you need! Including the best-selling book 'Real-World Functional Programming' and custom hands-on trainings.
Content-Length 22,868 bytes

Title and description as published by the page itself in its own <title> and <meta name="description"> tags.

DNS history

IPv4 address First seen
192.30.252.153 12/6/2023
192.30.252.154 12/6/2023
Name server First seen
ns.forpsi.cz 12/6/2023
ns.forpsi.it 12/6/2023
ns.forpsi.net 12/6/2023
ns.forpsi.us 12/6/2023

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

192.30.252.153 17,653 domains · here since 9/23/2026
Domain On this IP since
zzzdeng.net 9/20/2026
zzy98.live 9/17/2026
zzr1000.cn 9/12/2026
zzp.me 9/22/2026
zzivi.com 9/14/2026
zzicncn.com 9/19/2026
zzachsmith.com 9/20/2026
zyzhou.work 9/16/2026
zyong.site 9/13/2026
zyjbml.cn 9/13/2026
zxshen.win 9/23/2026
zxii.net 9/17/2026
and 17,640 more
192.30.252.154 14,799 domains · here since 9/23/2026
Domain On this IP since
zzzdeng.net 9/20/2026
zzy98.live 9/17/2026
zzp.me 9/22/2026
zzivi.com 9/14/2026
zzicncn.com 9/19/2026
zzachsmith.com 9/20/2026
zyzhou.work 9/16/2026
zyq.jl.cn 9/16/2026
zyong.site 9/13/2026
zyjbml.cn 9/13/2026
zxming.com 9/16/2026
zxii.net 9/17/2026
and 14,786 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.