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384.3 M

Domains known to webXtrend

9.5 M

New domains in the last 30 days

62.5 M

Social media profiles detected

21pdf.com

21pdf.com 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.

41,757,539 other domains share an IP address with it.

The most recent crawl returned the page title “21pdf — HTML to PDF API, rendered precisely” and 28,403 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 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 0 Number of domains that redirect to this domain.
Reverse IP 41,757,539 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": "21pdf.com"}'

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 Google Trust Services
Valid from 8/21/2026
Valid to 11/19/2026
Time until expiry 32 days

Last successful crawl

Title 21pdf — HTML to PDF API, rendered precisely
Description Production HTML-to-PDF REST API. POST HTML or a URL, get a PDF. Chromium rendering, async jobs, SSRF-safe. Free tier, pay-as-you-scale.
Content-Length 28,403 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
104.21.48.175 4/20/2026
172.67.187.107 4/20/2026
159.223.239.207 6/4/2024
188.114.96.3 5/30/2024
188.114.97.3 5/30/2024
IPv6 address Last updated
2606:4700:3031:0:0:0:ac43:bb6b 7/7/2026
2606:4700:3037:0:0:0:6815:30af 7/7/2026
2606:4700:3032:0:0:0:6815:30af 5/11/2026
2606:4700:3037:0:0:0:ac43:bb6b 5/11/2026
2a06:98c1:3120:0:0:0:0:0 5/4/2026
Mail server Priority Last updated
route2.mx.cloudflare.net 8 4/20/2026
route1.mx.cloudflare.net 66 4/20/2026
route3.mx.cloudflare.net 80 4/20/2026
eforward1.registrar-servers.com 10 2/5/2024
eforward2.registrar-servers.com 10 2/5/2024
Name server Last updated
becky.ns.cloudflare.com 4/20/2026
henrik.ns.cloudflare.com 4/20/2026
dns1.registrar-servers.com 6/4/2024
dns2.registrar-servers.com 6/4/2024
amber.ns.cloudflare.com 2/5/2024

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

2a06:98c1:3120::3 10,396,320 domains · here since 10/17/2026
Domain On this IP since
zzzzzzzzz.xyz 10/6/2026
zzzzzzzzum.icu 10/13/2026
zzzzzzzoes.site 10/16/2026
zzzzzzys.com 9/19/2026
zzzzzyl1.cn 10/14/2026
zzzzzwwwppodjfdkodkloq.com 9/28/2026
zzzzzssss55.online 9/16/2026
zzzzzssss55.buzz 9/20/2026
zzzzzsss77.online 9/20/2026
zzzzzssj.com 9/14/2026
zzzzzn.com 9/20/2026
zzzzzhibo20.com 10/17/2026
and 10,396,307 more
2a06:98c1:3121::3 10,396,317 domains · here since 10/17/2026
Domain On this IP since
zzzzzzzzz.xyz 10/6/2026
zzzzzzzzum.icu 10/13/2026
zzzzzzzoes.site 10/16/2026
zzzzzzys.com 9/19/2026
zzzzzyl1.cn 10/14/2026
zzzzzwwwppodjfdkodkloq.com 9/28/2026
zzzzzssss55.online 9/16/2026
zzzzzssss55.buzz 9/20/2026
zzzzzsss77.online 9/20/2026
zzzzzssj.com 9/14/2026
zzzzzn.com 9/20/2026
zzzzzhibo20.com 10/17/2026
and 10,396,304 more
188.114.96.3 10,482,451 domains · here since 10/4/2026
Domain On this IP since
zzzzzzzzz.xyz 10/6/2026
zzzzzzzzz.org 9/13/2026
zzzzzzzzum.icu 10/13/2026
zzzzzzzoes.site 10/16/2026
zzzzzzys.com 9/19/2026
zzzzzyl1.cn 10/14/2026
zzzzzwwwppodjfdkodkloq.com 9/28/2026
zzzzzssss55.online 9/16/2026
zzzzzssss55.buzz 9/20/2026
zzzzzsss77.online 9/20/2026
zzzzzssj.com 9/14/2026
zzzzzn.com 9/20/2026
and 10,482,438 more
188.114.97.3 10,482,451 domains · here since 10/4/2026
Domain On this IP since
zzzzzzzzz.xyz 10/6/2026
zzzzzzzzz.org 9/13/2026
zzzzzzzzum.icu 10/13/2026
zzzzzzzoes.site 10/16/2026
zzzzzzys.com 9/19/2026
zzzzzyl1.cn 10/14/2026
zzzzzwwwppodjfdkodkloq.com 9/28/2026
zzzzzssss55.online 9/16/2026
zzzzzssss55.buzz 9/20/2026
zzzzzsss77.online 9/20/2026
zzzzzssj.com 9/14/2026
zzzzzn.com 9/20/2026
and 10,482,438 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.