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385.6 M

Domains known to webXtrend

9.9 M

New domains in the last 30 days

62.8 M

Social media profiles detected

csharpcalc.org

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

csharpcalc.org serves a website of its own. It answers on IPv4 only, with no TLS certificate and MX records for mail.

Its IP address is shared with 181 other domains, and 2 domains redirect to it.

The most recent crawl returned the page title “CSharpCalc - Science and Algorithms” and 5,461 bytes of HTML.

Domain properties

Property Value Explanation
Top-level domain .org 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 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 2 Number of domains that redirect to this domain.
Reverse IP 182 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": "csharpcalc.org"}'

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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

No certificate data available for this domain.

Last successful crawl

Title CSharpCalc - Science and Algorithms
Description CSharpCalc is a free windows software for developing computer simulations and algorithms using the C# language
Content-Length 5,461 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
85.13.136.62 1/26/2026
85.13.157.206 12/11/2023
Mail server Priority First seen
w016f90d.kasserver.com 10 1/1/2024
Name server First seen
ns5.kasserver.com 12/11/2023
ns6.kasserver.com 12/11/2023

The five most recent states of each record type. The full history comes through the API: DNS history.

Most recent redirect domains

Domain Last seen
csharpcalc.com 10/24/2026
csharpcalc.net 10/19/2026

Reverse IP neighbours

85.13.136.62 182 domains · here since 9/14/2026
Domain On this IP since
xn--vom-hglwrther-see-3zbd.de 9/23/2026
xn--skr-snitz-47a.de 9/13/2026
xn--khne-garagen-dlb.de 9/14/2026
wund3rland.de 9/14/2026
wir-regensburg.de 9/15/2026
wessinger.info 9/17/2026
wessi.info 9/22/2026
welebny.de 9/20/2026
welebny-coaching.de 9/20/2026
weiss-gmbh.biz 9/13/2026
webseiten-stylist.de 9/15/2026
weallrecall.com 9/22/2026
and 169 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.