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74
Total
80
DNS
45
Email
65
Security
85
Network
100
Availability
Domainseclists.org
IPv41
IPv61
MX records1
StatusActive
Domain technical report

SecLists.Org Security Mailing List Archive

seclists.org

Security mailing list archive for the Nmap lists, Bugtraq, Full Disclosure, Security Basics, Pen-test, and dozens more. Search capabilities and RSS feeds with smart excerpts are available

Generated: 2026-08-10T07:32:46-05:00 · Cached result

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IPv41
IPv61
MX1
NS5

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

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

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

1 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

68 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

!
HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: ack.nmap.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/1.1 200 OK

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
50.116.1.184

AAAA

1 record(s)
2600:3c01:e000:3e6::6d4e:7061

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
0 ack.nmap.org.

TXT

1 record(s)
"v=spf1 a mx ptr ip4:50.116.1.184 ip6:2600:3c01:e000:3e6::6d4e:7061 include:_spf.google.com ~all"

NS

5 record(s)
ns1.linode.com.
ns2.linode.com.
ns3.linode.com.
ns4.linode.com.
ns5.linode.com.

SOA

1 record(s)
ns1.linode.com. hostmaster.nmap.com. 2021000005 14400 14400 1209600 3600

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

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 mx ptr ip4:50.116.1.184 ip6:2600:3c01:e000:3e6::6d4e:7061 include:_spf.google.com ~all

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
SecLists.Org Security Mailing List Archive
Description
Security mailing list archive for the Nmap lists, Bugtraq, Full Disclosure, Security Basics, Pen-test, and dozens more. Search capabilities and RSS feeds with smart excerpts are available
Final URL
https://seclists.org/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://seclists.org/
Version
2
Server
Apache/2.4.6 (CentOS)
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
insecure.com
Valid from
2026-07-20T04:07:57-05:00
Valid until
2026-10-18T04:07:56-05:00
Days remaining
68
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES128-GCM-SHA256

Security headers

0 active
—
HSTSNot detected
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
—
X-Frame-OptionsNot detected
—
Referrer PolicyNot detected
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
50.116.1.184
57,05 ms
Cloudflare
1.1.1.1
50.116.1.184
37,02 ms
Quad9
9.9.9.9
50.116.1.184
42,15 ms
OpenDNS
208.67.222.222
50.116.1.184
102,96 ms
AdGuard
94.140.14.14
50.116.1.184
107,54 ms

IP, geolocation and ASNAssociated network information

50.116.1.184

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

ack.nmap.org

Port 25: Closed/unreachable - 84.7 ms - 
Port 465: Closed/unreachable - 4020.7 ms - 
Port 587: Closed/unreachable - 4069 ms -

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