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382.4 M

Registered domains

9.2 M

New domains in the last 30 days

64.9 M

Social media profiles detected

zerotheory.org

zerotheory.org 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.

3,490 other domains share an IP address with it.

The most recent crawl returned the page title “Home - Zero Theory” and 132,143 bytes of HTML.

Domain properties

Property Value Explanation
First seen unknown Date the domain was first seen.
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 3,490 Number of domains with the same IP(s).

Detected social media networks

No social networks found on this website.

Last successful crawl

Title Home - Zero Theory
Description Zero Theory is a tactical and precision rifle company offering training & consulting services from our roots in tactical law enforcement..
Content-Length 132,143 bytes

Title and description as published by the page itself in its own <title> and <meta name="description"> tags.

Last SSL certificate

Issuer Google Trust Services
Valid from 8/16/2026
Valid to 11/14/2026
Time until expiry 41 days

DNS history

IPv4 address Last updated
104.21.73.12 6/18/2026
172.67.136.236 6/18/2026
66.33.203.101 6/10/2026
192.185.17.1 12/15/2023
IPv6 address Last updated
2606:4700:3035:0:0:0:6815:490c 7/5/2026
2606:4700:3037:0:0:0:ac43:88ec 7/5/2026
2606:4700:3033:0:0:0:6815:490c 6/18/2026
2606:4700:3036:0:0:0:ac43:88ec 6/18/2026
Mail server Priority Last updated
mx1.dreamhost.com 0 6/10/2026
mx2.dreamhost.com 0 6/10/2026
mail.zerotheory.org 0 12/31/2023
Name server Last updated
amber.ns.cloudflare.com 6/18/2026
otto.ns.cloudflare.com 6/18/2026
ns1.dreamhost.com 6/10/2026
ns2.dreamhost.com 6/10/2026
ns3.dreamhost.com 6/10/2026

Last 5 redirect domains

No domains found.

Reverse IP neighbours

104.21.73.12 878 domains · here since 9/19/2026
Domain On this IP since
zzsenge.com 9/30/2026
zsgxjd.com 9/24/2026
zoho-app.com 9/30/2026
zkscrbyy.com 9/16/2026
zjttbz.com 9/17/2026
ziyue-ad.com 9/15/2026
zipinbiotech.com 9/16/2026
zinup.com.br 9/28/2026
zhivagopartners.com 9/23/2026
zferp.direct 9/20/2026
zerodebtlegal.com 9/16/2026
zeitlosblog.com 9/19/2026
and 865 more
172.67.136.236 878 domains · here since 9/19/2026
Domain On this IP since
zzsenge.com 9/30/2026
zsgxjd.com 9/24/2026
zoho-app.com 9/30/2026
zkscrbyy.com 9/16/2026
zjttbz.com 9/17/2026
ziyue-ad.com 9/15/2026
zipinbiotech.com 9/16/2026
zinup.com.br 9/28/2026
zhivagopartners.com 9/23/2026
zferp.direct 9/20/2026
zerodebtlegal.com 9/16/2026
zeitlosblog.com 9/19/2026
and 865 more
2606:4700:3035::6815:490c 867 domains · here since 9/19/2026
Domain On this IP since
zzsenge.com 9/30/2026
zsgxjd.com 9/24/2026
zoho-app.com 9/30/2026
zkscrbyy.com 9/16/2026
zjttbz.com 9/17/2026
ziyue-ad.com 9/15/2026
zipinbiotech.com 9/16/2026
zinup.com.br 9/28/2026
zhivagopartners.com 9/23/2026
zferp.direct 9/20/2026
zerodebtlegal.com 9/16/2026
zeitlosblog.com 9/19/2026
and 854 more
2606:4700:3037::ac43:88ec 867 domains · here since 9/19/2026
Domain On this IP since
zzsenge.com 9/30/2026
zsgxjd.com 9/24/2026
zoho-app.com 9/30/2026
zkscrbyy.com 9/16/2026
zjttbz.com 9/17/2026
ziyue-ad.com 9/15/2026
zipinbiotech.com 9/16/2026
zinup.com.br 9/28/2026
zhivagopartners.com 9/23/2026
zferp.direct 9/20/2026
zerodebtlegal.com 9/16/2026
zeitlosblog.com 9/19/2026
and 854 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.