readabilityformulas.com

readabilityformulas.com serves a website of its own over HTTPS. It answers on IPv4 only, with a valid TLS certificate and MX records for mail.

90 other domains share an IP address with it.

The most recent crawl returned the page title “Readability Formulas | Free readability assessment tools” and 21,324 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.com	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	only IPv4	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	90	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": "readabilityformulas.com"}'

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	Let's Encrypt
Valid from	9/26/2026
Valid to	12/25/2026
Time until expiry	68 days

Last successful crawl

Title	Readability Formulas \| Free readability assessment tools
Description	ReadabilityFormulas.com is a free website to automatically calculate the reading level and grade level of your materials. We also offer advice on how to improve your writing and write effectively for your readers.
Content-Length	21,324 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
192.185.48.159	12/11/2023

Mail server	Priority	Last updated
readabilityformulas.com	0	1/1/2024

Name server	Last updated
ns2047.hostgator.com	12/11/2023
ns2048.hostgator.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

No domains found.

Reverse IP neighbours

192.185.48.159 90 domains · here since 9/16/2026

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vesdi.co	9/17/2026
utilizationdata.com	9/15/2026
unchartedsolutions.io	9/17/2026
ukpere.com	9/22/2026
trinityrenovation.com	9/17/2026
tech-intl.com	9/21/2026
swimspasolutions.com	9/13/2026
surgerynet-ga.com	9/20/2026
stylewriter-usa.com	9/17/2026
stjpc.org	9/22/2026
ssdelite.com	9/16/2026
and 77 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.

Dive into our data, search now!