classreader.app

classreader.app 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.

3,535 other domains share an IP address with it, and one domain redirects to it.

The most recent crawl returned the page title “ClassReader — Turn PDFs and textbooks into audio” and 18,529 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.app	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	1	Number of domains that redirect to this domain.
Reverse IP	3,535	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": "classreader.app"}'

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	10/5/2026
Valid to	1/3/2027
Time until expiry	77 days

Last successful crawl

Title	ClassReader — Turn PDFs and textbooks into audio
Description	Turn PDFs, textbooks and newsletters into natural-sounding audio you can stream. Forward an email or upload a file. 10 pages free, no card needed.
Content-Length	18,529 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
104.21.9.215	8/9/2026
172.67.161.87	8/9/2026

IPv6 address	Last updated
2606:4700:3031:0:0:0:6815:9d7	8/9/2026
2606:4700:3037:0:0:0:ac43:a157	8/9/2026

Mail server	Priority	Last updated
route1.mx.cloudflare.net	34	8/9/2026
route2.mx.cloudflare.net	66	8/9/2026
route3.mx.cloudflare.net	76	8/9/2026

Name server	Last updated
dara.ns.cloudflare.com	8/9/2026
dave.ns.cloudflare.com	8/9/2026

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
textbook-tts.com	10/9/2026

Reverse IP neighbours

104.21.9.215 892 domains · here since 9/13/2026

Domain	On this IP since
zylwh.com	9/29/2026
zucoryn.com	9/14/2026
zskua.com	9/20/2026
zoxa.cc	10/7/2026
zoty.com.br	9/20/2026
zopf.cc	9/14/2026
zoomtooyou.com	9/25/2026
zonira.cfd	9/16/2026
zonagrafite.it	9/22/2026
zomue.com	9/23/2026
zhimingsheng.com	9/15/2026
zfhzgb.info	10/12/2026
and 879 more

172.67.161.87 891 domains · here since 9/13/2026

Domain	On this IP since
zylwh.com	9/29/2026
zucoryn.com	9/14/2026
zskua.com	9/20/2026
zoxa.cc	10/7/2026
zoty.com.br	9/20/2026
zopf.cc	9/14/2026
zoomtooyou.com	9/25/2026
zonira.cfd	9/16/2026
zonagrafite.it	9/22/2026
zomue.com	9/23/2026
zhimingsheng.com	9/15/2026
zfhzgb.info	10/12/2026
and 878 more

2606:4700:3031::6815:9d7 876 domains · here since 9/13/2026

Domain	On this IP since
zylwh.com	9/29/2026
zucoryn.com	9/14/2026
zskua.com	9/20/2026
zoxa.cc	10/7/2026
zoty.com.br	9/20/2026
zopf.cc	9/14/2026
zoomtooyou.com	9/25/2026
zonira.cfd	9/16/2026
zonagrafite.it	9/22/2026
zomue.com	9/23/2026
zhimingsheng.com	9/15/2026
zfhzgb.info	10/12/2026
and 863 more

2606:4700:3037::ac43:a157 876 domains · here since 9/13/2026

Domain	On this IP since
zylwh.com	9/29/2026
zucoryn.com	9/14/2026
zskua.com	9/20/2026
zoxa.cc	10/7/2026
zoty.com.br	9/20/2026
zopf.cc	9/14/2026
zoomtooyou.com	9/25/2026
zonira.cfd	9/16/2026
zonagrafite.it	9/22/2026
zomue.com	9/23/2026
zhimingsheng.com	9/15/2026
zfhzgb.info	10/12/2026
and 863 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!