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65
Total
95
DNS
25
Email
69
Security
70
Network
60
Availability
Domainus-cert.gov
IPv44
IPv64
MX records0
StatusActive
Domain technical report

Access Denied

us-cert.gov

Generated: 2026-08-09T13:19:00-05:00 · Cached result

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IPv44
IPv64
MX0
NS3

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

4 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

3 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 policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

!
MX records0 / 20 pts · Mail

0 MX record(s).

!
SPF0 / 25 pts · Mail

SPF policy not found.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
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

40 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓
IPv4 diversity35 / 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 response0 / 40 pts · Availability

HTTP/2 403

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

4 record(s)
172.65.90.24
172.65.90.27
172.65.90.25
172.65.90.26

AAAA

4 record(s)
2606:4700:78::90:0:182
2606:4700:78::90:0:183
2606:4700:78::90:0:181
2606:4700:78::90:0:180

CNAME

0 record(s)
—

Not configured

MX

0 record(s)
—

Not configured

TXT

2 record(s)
"MS=ms22840512"
"_7dtko5cdi1qwbc04s6sp3z4rgt4df05"

NS

3 record(s)
blue.foundationdns.net.
blue.foundationdns.com.
blue.foundationdns.org.

SOA

1 record(s)
blue.foundationdns.com. dns.cloudflare.com. 2410656711 10000 2400 604800 1800

CAA

0 record(s)
—

Not configured

DS

1 record(s)
2371 13 2 7ED15FE80379B2118957DA482E92CAFB7EE7778E3F9A2634B366E05D 9E5358AA

DNSKEY

2 record(s)
257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==

RRSIG

2 record(s)
NS 13 2 3600 20260810191857 20260808171857 34505 us-cert.gov. 2+0wnYmWifDOFYQhXMkjmeFNr7/rkJGnxMtohUcCEezNDM6Xq/b3qPvD ehTeMX9frJzCQRhbs/ilFsetpe8E0A==
DS 13 2 3600 20260810191857 20260808171857 35496 gov. KIJTuTS3OLNt7CbhsOsUKKmFeAMEsYSmACmr0BOA1jNNNoin8ccBvVRc ei9PwSnh2FNmpQdjnTjFjo5mygCpLw==

NSEC

1 record(s)
\000.us-cert.gov. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI CAA

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

Not configured
—

Not configured

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:dmarc-rua@us-cert.gov,mailto:reports@dmarc.cyber.dhs.gov; fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=86400

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Access Denied
Description
Final URL
https://www.cisa.gov/
HTTP status
403

HTTP

Status
HTTP/2 403
Final URL
https://www.cisa.gov/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Google Trust Services
CN
us-cert.gov
Valid from
2026-06-21T08:21:07-05:00
Valid until
2026-09-19T09:21:04-05:00
Days remaining
40
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

1 active
✓
HSTSImplemented
—
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
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
47,91 ms
Cloudflare
1.1.1.1
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
26,82 ms
Quad9
9.9.9.9
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
54,59 ms
OpenDNS
208.67.222.222
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
54,55 ms
AdGuard
94.140.14.14
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
70,93 ms

IP, geolocation and ASNAssociated network information

172.65.90.24

No data
success
No
country
region
city
asn
organization
isp

172.65.90.27

No data
success
No
country
region
city
asn
organization
isp

172.65.90.25

No data
success
No
country
region
city
asn
organization
isp

172.65.90.26

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

us-cert.gov

Port 25: Closed/unreachable - 3.3 ms - 
Port 465: Closed/unreachable - 1.4 ms - 
Port 587: Closed/unreachable - 1.3 ms -

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