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382.2 M

Registered domains

9.1 M

New domains in the last 30 days

65.3 M

Social media profiles detected

picoctf.com

It answers on IPv4 only.

873 other domains share an IP address with it.

The most recent crawl returned the page title “picoCTF - CMU Cybersecurity Competition” and 33,969 bytes of HTML. The site links to Facebook and Twitter profiles. webXtrend first recorded it on .

Domain properties

Property Value Explanation
First seen 12/7/2012 Date the domain was first seen.
Has website no A website is hosted under the domain, which does not redirect to an external domain.
Has MX-record no The domain has an MX record.
External redirect yes 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 no certificate Shows whether the domain has a valid SSL certificate.
Redirects 0 Number of domains that redirect to this domain.
Reverse IP 873 Number of domains with the same IP(s).

Detected social media networks

Last successful crawl

Title picoCTF - CMU Cybersecurity Competition
Description picoCTF is a free computer security education program with original content built on a capture-the-flag framework created by security and privacy experts at Carnegie Mellon University.
Content-Length 33,969 bytes

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

Last SSL certificate

Issuer Amazon
Valid from 3/13/2025
Valid to 4/13/2026
Time until expiry 170 days

DNS history

IPv4 address Last updated
16.15.213.13 9/26/2026
16.15.254.196 9/26/2026
16.182.106.13 9/26/2026
16.182.37.157 9/26/2026
52.216.216.29 9/26/2026
IPv6 address Last updated
2600:9000:2646:2000:e:106d:e100:93a1 1/17/2026
2600:9000:2646:200:e:106d:e100:93a1 1/17/2026
2600:9000:2646:4000:e:106d:e100:93a1 1/17/2026
2600:9000:2646:5400:e:106d:e100:93a1 1/17/2026
2600:9000:2646:bc00:e:106d:e100:93a1 1/17/2026
Mail server Priority Last updated
aspmx.l.google.com 1 12/30/2023
alt1.aspmx.l.google.com 5 12/30/2023
alt2.aspmx.l.google.com 5 12/30/2023
alt3.aspmx.l.google.com 10 12/30/2023
alt4.aspmx.l.google.com 10 12/30/2023
Name server Last updated
ns-1260.awsdns-29.org 1/23/2026
ns-1952.awsdns-52.co.uk 1/23/2026
ns-308.awsdns-38.com 1/23/2026
ns-937.awsdns-53.net 1/23/2026
ns-1109.awsdns-10.org 12/9/2023

Last 5 redirect domains

No domains found.

Reverse IP neighbours

16.15.254.76 211 domains · here since 9/23/2026
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Domain On this IP since
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16.15.212.60 171 domains · here since 9/23/2026
Domain On this IP since
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16.182.37.205 28 domains · here since 9/23/2026
Domain On this IP since
zapiermail.com 9/24/2026
yotoinc.com 9/23/2026
wheniwork-files.com 9/30/2026
wbplay.com 9/20/2026
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nwtxsyndication.com 9/29/2026
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52.217.124.149 22 domains · here since 9/23/2026
Domain On this IP since
yenandgleb.com 9/26/2026
wbxdev.com 9/19/2026
waterfootprint.com 9/20/2026
warby-parkersunglasses.com 9/22/2026
velog.ru 9/20/2026
topstonesoftware.com 9/19/2026
simonthede.com 9/19/2026
shima.pet 9/30/2026
shearwaterintl.com 9/22/2026
puppurrresorts.com 9/24/2026
privatise.com 9/25/2026
miakenigsberg.com 9/21/2026
and 9 more
52.217.227.21 18 domains · here since 9/23/2026
Domain On this IP since
sourgum.net 9/25/2026
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radiocarbon.com.cn 9/22/2026
owlcharts.com 9/19/2026
mcdow.org 9/22/2026
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lukehogan.co.uk 9/30/2026
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iassecurity.net 9/23/2026
gallant.dog 9/25/2026
foreignbodyremover.com 9/25/2026
dfwtrailer.rentals 9/29/2026
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54.231.170.213 17 domains · here since 9/23/2026
Domain On this IP since
vizadik.com 9/21/2026
visualize.today 9/24/2026
radiuspowersmobility.com 9/28/2026
outlawsmc.com.au 9/20/2026
one-cnb-mail.com 9/29/2026
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mantis-scheduled-tickets.net 9/24/2026
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keiron.com.mx 9/23/2026
k3d.ca 9/27/2026
ixntouch.org 9/23/2026
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and 4 more