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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

classsync.io

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

classsync.io serves a website of its own. It answers on IPv4 only, with a valid TLS certificate and MX records for mail.

Its IP address is shared with 54 other domains.

The most recent crawl returned the page title “ClassSync.io - OneID & Roster Management” and 164,961 bytes of HTML.

Domain properties

Property Value Explanation
Top-level domain .io 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 valid Shows whether the domain has a valid SSL certificate.
Redirects 0 Number of domains that redirect to this domain.
Reverse IP 55 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": "classsync.io"}'

Create a free account Read the API docs

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

Issuer ZeroSSL GmbH
Valid from 6/15/2026
Valid to 12/31/2026
Time until expiry 68 days

Last successful crawl

Title ClassSync.io - OneID & Roster Management
Description Unified management for Google Workspace and Microsoft 365, SDS CSV 2.1 generation, and automated class creation for Classroom and Teams.
Content-Length 164,961 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
20.119.136.19 8/16/2024
Mail server Priority First seen
aspmx.l.google.com 1 8/16/2024
alt1.aspmx.l.google.com 5 8/16/2024
alt2.aspmx.l.google.com 5 8/16/2024
alt3.aspmx.l.google.com 10 8/16/2024
alt4.aspmx.l.google.com 10 8/16/2024
Name server First seen
ns75.domaincontrol.com 8/16/2024
ns76.domaincontrol.com 8/16/2024

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

20.119.136.19 55 domains · here since 9/18/2026
Domain On this IP since
wyntech.inf.br 9/13/2026
wow-networks.com 9/12/2026
w8shippinguae.com 9/14/2026
w8shippingua.com 9/18/2026
w8shippingpl.com 9/20/2026
w8shippingkh.com 9/12/2026
w8shippingge.com 9/12/2026
vertexrxsol.com 9/12/2026
taldyn.com 9/13/2026
symproic.com 9/23/2026
staugustinefamilylaw.com 9/16/2026
srbcorp.net 9/22/2026
and 42 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.