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89
Total
95
DNS
90
Email
81
Security
70
Network
100
Availability
Domainnist.gov
IPv44
IPv64
MX records1
StatusActive
Domain technical report

National Institute of Standards and Technology

nist.gov

NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.

Generated: 2026-08-08T17:48:43-05:00 · Cached result

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IPv44
IPv64
MX1
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 records20 / 20 pts · Mail

1 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

52 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers16 / 35 pts · Security

4 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 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

4 record(s)
172.65.90.26
172.65.90.24
172.65.90.27
172.65.90.25

AAAA

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

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
0 nist-gov.mail.protection.outlook.com.

TXT

10 record(s)
"openai-domain-verification=dv-LH2I25vAcFPzjYDPYCU2t6Uy"
"cisco-ci-domain-verification=1b1e68d4cf0e84478115596723f00e17a848c659bb11f53b58f8f2cd84b7e111"
"v=spf1 include:_spf1.nist.gov include:_spf2.nist.gov -all"
"domain-verification=J6aCmM09zEcfzyPp57W7AtDczKeyPHwj_WRoqnt0g0Q"
"atlassian-domain-verification=xVa84aCbqa1pJZZdpB0gGm0ZNukDUU4TBzccNbFkyozIg3QXHaufaQaczvEDG3Jp"
"box-domain-verification=4d49553685eee3edbcf58b736eb4c42febff4e1741da8db3098f2bb3d161d90f"
"MS=ms22398849"
"google-site-verification=oJSFVUoM3RN44bzuiI9F3qWzWxTqmrawzMycAD_NUcY"
"jamf-site-verification=Sr15KQEdTRZZXqaxbFaFQw"
"_hie8b7uqvafayfkdb47ag5t5up1nxbb"

NS

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

SOA

1 record(s)
gold.foundationdns.com. dns.cloudflare.com. 2411421182 10000 2400 604800 1800

CAA

0 record(s)
—

Not configured

DS

1 record(s)
33751 8 2 90C6CD28626CA7B8E3A1FACAD58D20D486E52DF040B9B2F085ACD5C7 03E624C6

DNSKEY

2 record(s)
256 3 8 AwEAAeNZU6cdEr+o3lMoluay4XV/dgC/a/p6/RQCgKbzPe1S6DCa4N6m ru+AL8JTkYEKiwCnWoW5ruzS16rK9oRcP4/RjZOO7bopWiTXciWOQN6I J/SbeEtp1m3AlL3OHLAv9lY3sbRydMHfbbsbCijDd3chIqS0BabZyI0E DMCD6NGJroPf0ERqV7D5LfsvT59BCZpLIp3u6MZpIXieqPQKKe0=
257 3 8 AwEAAeaJ7qqumy0GJV00pMwozYZ+2Fj+VxfbCzjLL428MHvSceglIf6o f3GTd+BjiYnH7ohXMhBNcEikXIORas0fMrTYa5Ak2/znKVizxANVL+7T ThgE2Wwi0dgy+yMQaGAWSfC4LhnHhMJ28I24ce+6pDHF6xwr7HECRxEK +bMIantoYtQkFTkdkLrMagnPh9kRp66dQuzKtbbMkfd8n8fEhni3iziE qVK2pST5bYMJm2IkSscAz8NfrRqya+flm/fy8RRFSYVcfPaOC3sZf91H 0fBkyBbBfM3pRihMUyg3TBZ/rg9NZiM0yTf+scSH+E3w+WRkC+/xOouh yYZE4NxqfdM=

RRSIG

2 record(s)
NS 8 2 86400 20260809234834 20260807214834 18303 nist.gov. RWwXbtapi9BUWXDJi1At6xb7h/pHpeuDpMbsrSbQekVtgOLegB7zsD0o Ipyz0Kd3vWA8cBeqG6VsZyePkfXxUvPH9lc9UDW+XQDeBZs5vnknqf8e l5DXHaMZ8E6i+hQiUHfwIh9HDiynVejiTRqHA/d8G0E9tDeMOIKhv7ht W7O/KSDx+P1oXnqW0uaW8uwyHulhkLmDMZtfVEK8M0qBPw==
DS 13 2 3600 20260809234834 20260807214834 35496 gov. sTxznrz9ZfatMxKoueMQXIBUqd1TqXsnJMH6/C+XKKJ7O9gN0K88BrPE PgaBVeZ8OnVeJtMQjFode+SMRDPq6Q==

NSEC

1 record(s)
\000.nist.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

Configured
v=spf1 include:_spf1.nist.gov include:_spf2.nist.gov -all

DMARC

Configured
v=DMARC1; p=reject; pct=100; rua=mailto:dmarcrua@nist.gov,mailto:dmarc-reports@doc.gov, mailto:reports@dmarc.cyber.dhs.gov,mailto:dmarc_agg@vali.email; ruf=mailto:dmarcruf@nist.gov

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx3jAZwNIjtFdkysBfSvf41tsViCKS8UW10+tEuOx7ymNSO5ggE0kYRaT0BeoUUW4p+R/IRGKJUsFwWMXAonTQVuFa6uVrT++OGN5tTibDiIqQIOzjHtpK0ucon40NelUImBixamFQ+o/3Vek5dO29buxtLr5VBgED4LifhM9bOU92VU3hkLakzwdY0arDoMOOj7HWMS4B5EnCwB668ANmC35xY2prjz8L0Do45AaJBF/laQx504sVsygAD8ur8ZD20j7URNgckD2J6ziGosUjI0sdMRvPLQYesm1ATk9lqibIGk6Pk/MyLndfX1ffWh0yFEpBGXvWzw1AWlD/HhJeQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
National Institute of Standards and Technology
Description
NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.
Final URL
https://www.nist.gov/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://www.nist.gov/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
nist.gov
Valid from
2026-07-02T04:58:01-05:00
Valid until
2026-09-30T04:58:00-05:00
Days remaining
52
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

4 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
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
62,05 ms
Cloudflare
1.1.1.1
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
28,89 ms
Quad9
9.9.9.9
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
45,09 ms
OpenDNS
208.67.222.222
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
39,91 ms
AdGuard
94.140.14.14
172.65.90.24, 172.65.90.25, 172.65.90.26, 172.65.90.27
75,24 ms

IP, geolocation and ASNAssociated network information

172.65.90.26

No data
success
No
country
region
city
asn
organization
isp

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

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

nist-gov.mail.protection.outlook.com

Port 25: Closed/unreachable - 36.7 ms - 
Port 465: Closed/unreachable - 4055.7 ms - 
Port 587: Closed/unreachable - 4019.6 ms -

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