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95
Total
100
DNS
80
Email
100
Security
85
Network
100
Availability
Domaindefcon.org
IPv41
IPv61
MX records2
StatusActive
Domain technical report

DEF CON® Hacking Conference Home

defcon.org

The largest hacking and security conference with presentations, workshops, contests, villages and the premier Capture The Flag Contest.

Generated: 2026-08-10T11:34:18-05:00 · Cached result

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IPv41
IPv61
MX2
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

1 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

2 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

2 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

✓
MTA-STS5 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

204 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

✓
HTTP security headers35 / 35 pts · Security

9 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: defcon.org

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
50.230.231.78

AAAA

1 record(s)
2001:559:327:231::78

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
20 mail-2.datamerica.com.
10 mail-1.datamerica.com.

TXT

4 record(s)
"v=spf1 a:mail-1.datamerica.com a:mail-2.datamerica.com -all"
"security_policy=https://defcon.org/html/links/disclosure-policy.html"
"security_contact=mailto:security@defcon.org"
"google-site-verification=d5Wqya3G077LcmFPN-VE5ZqQJxXCqKTgSkU1ATIJBks"

NS

2 record(s)
dns-1.datamerica.com.
dns-3.datamerica.com.

SOA

1 record(s)
dns-1.datamerica.com. hostmaster.defcon.org. 2026080900 43200 600 2419200 86400

CAA

1 record(s)
0 issue "harica.gr"

DS

1 record(s)
55751 14 2 761BF54494BE2DFB6232411E5F57E158A12321AA1AAF2C50636FBC99 B038D1EE

DNSKEY

3 record(s)
257 3 14 7QLbpzcJV/czaAzgHh0xXJpEphdPV3aWD3pLNGhT9p05uKuNB49a536W UKWZ1pm2b6QV+FzfoJRTPD5Tx0dwLaN4bTSS1C5uu6/zrgjVxZj6lrF0 YFxu9W3cLnlzkrzF
256 3 14 cOekBZgy/lQAe6NfffxRqmD4eVZ/3LPmIaaiy3awEwltAA+R00mmU276 vqnaN07bYPlMJ8x/aCdE2xR6hPkqstrcwnRQ4mb4xdqhVDlNXQRvFsB/ V29i8x2FkYuykudv
256 3 14 m4xJjMXj4/P+vAtrBZmTSVAS8dRCBkPr2597kzQjtCBcSGUIvtLyaLyh iz5WXaxhyVjlKb0qbj3akG3VdEmkWw2ERB6K52plCExpr9MWDPdCH9CH fss2zStyvXxCrbh+

RRSIG

6 record(s)
DNSKEY 14 2 3600 20261010020615 20260810010615 55751 defcon.org. ptNQoc9o4Wuf0DjiSlc4aHSCsEfGsKFZ5LKNga7/iqTBf1ve5U2CE5q0 5whFnIlrSF3DNxHC2k5tUheKyTHVhoVtogH4TaLFjitF2ciUEx0FwEES bFllGEMvC8+Q+0AM
DS 8 2 3600 20260830152406 20260809142406 44925 org. XPg65MRCXjVyD46JAja78TaiyAUKgH+1ZQTwKssA53FXFrz0PXmTb0E7 39k8GvuqIRzHy9OGN36/W/YyWD0SfE5vmLPvcHCkv0/Hy7q+8tics6w3 l1J/AJs/aAt2BXiQGMM7ocBt9+LXCMSdAWEmmil3v38ev9o7ZLcJ9K92 qFM=
NS 14 2 2419200 20260930234325 20260731231156 15530 defcon.org. EpSfM9UHA5pDDl5UOdObI/U0upVKjJ3S/rnzGz+FVgHEXvNwht3cgHf+ oyfi1+hVn56NNtoGK8BOvKWO54z4cdaYz8LaGrg855YUXiGUvPqAK61U Jb/HFeyyuzUQsn0B
NS 14 2 2419200 20260930234325 20260731231156 31438 defcon.org. zCm+fiH3WX63DLl0JEGqxl0IFkNu6LTj6EzX9uISCjdzCrG1rx18eMtd gJlWhMrdzlnvFbd0FPVx/WpAzu+tTIlkeoSQsQd8aVAYs+2P6RAV3vjg Ad3DxpTu1unI2kG/
TXT 14 2 2419200 20260930234325 20260731231156 15530 defcon.org. ZAz6e6fc/I0Ow6gyfXCXlQN4/Sb94j5s2jxcvg32RyGjR93Nqt4vkapv 8k6Z4VArYtOBp1Rmasv4zDjTVEk2boE/23EUgcJydmOaM7jxLbKNo1Ew QTfehOJb7WsXNKIq
TXT 14 2 2419200 20260930234325 20260731231156 31438 defcon.org. QJnjxrN3lOgF5xqX2SugMzamN2TNQr9b8r5wMRvrK9IX64x64SKvZkn+ Tvd65elWmn9lFIbmLRSoZNLkgSIbOqcjaOefZiZCRgOJUHtfZUQScJAq USsDoBHFmNZc4mxZ

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 a:mail-1.datamerica.com a:mail-2.datamerica.com -all

DMARC

Configured
v=DMARC1; p=quarantine; aspf=r; adkim=r; fo=1; rf=afrf; ri=86400; pct=100; ruf=mailto:postmaster@defcon.org!7m; rua=mailto:postmaster@defcon.org!7m

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
DEF CON® Hacking Conference Home
Description
The largest hacking and security conference with presentations, workshops, contests, villages and the premier Capture The Flag Contest.
Final URL
https://defcon.org/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://defcon.org/
Version
3
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Hellenic Academic and Research Institutions CA
CN
defcon.org
Valid from
2026-03-03T00:06:05-06:00
Valid until
2027-03-03T00:06:05-06:00
Days remaining
204
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

9 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
50.230.231.78
93,60 ms
Cloudflare
1.1.1.1
50.230.231.78
45,88 ms
Quad9
9.9.9.9
50.230.231.78
39,68 ms
OpenDNS
208.67.222.222
50.230.231.78
51,15 ms
AdGuard
94.140.14.14
50.230.231.78
737,53 ms

IP, geolocation and ASNAssociated network information

50.230.231.78

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

mail-2.datamerica.com

Port 25: Closed/unreachable - 63.8 ms - 
Port 465: Closed/unreachable - 4008.8 ms - 
Port 587: Closed/unreachable - 4021.1 ms -

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