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Total

DNS

Email

Security

Network

100

Availability

Domainnps.gov

IPv41

IPv61

MX records1

StatusActive

Domain technical report

NPS.gov Homepage (U.S. National Park Service)

nps.gov

The National Park Service cares for special places saved by the American people so that all may experience our heritage.

Generated: 2026-08-08T18:16:23-05:00 · Cached result

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IPv41

IPv61

MX1

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 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

22 day(s) remaining.

Certificate lifetime6 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers4 / 35 pts · Security

1 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: ec2-52-6-8-53.compute-1.amazonaws.com

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)

52.6.8.53

AAAA

1 record(s)

2600:9000:20aa:0:1:983:9400:93a1

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

10 nps-gov.mail.protection.outlook.com.

TXT

15 record(s)

"334fjub5l60gouiv36ot0f4fr8"
"v=spf1 ip4:96.127.113.23 include:_spf.nps.gov include:servers.mcsv.net -all"
"perplexity-ai-domain-verification-z4mg7t=QEnaU1uq5f4xOyCwehY9Rduc8"
"k3x1fbzs2816tkxpg3c76qky6c7s2x4v"
"adobe-sign-verification=90b66ed10fef33178bc085fa5524b39d8bfcfbcb0da9aa7a440a60610f8513b1"
"ueoq14l77f14ot5l94gnj8f73d"
"openai-domain-verification=dv-ebpiMpJUr0MylOGbu0HSOvUN"
"domain-verification=Fk5XTTt657ZDHZU5Tw24OpZeUHYkCmh-HoGheazSguE"
"atlassian-domain-verification=BDNWwhbMkb/KgzHy3HEdJBunaWjCLLc1pTa1UNQLj/zH/f2zkBaWuLxSzT8UjnZV"
"amazonses:72aXC5OVEkJqI109ds3EEaNByQb/SclYLq+pIp+JWz0="
"_qbssbwgpkm46pn8gif4416ijhafqg85"
"MS=ms12791101"
"BEAA-1797-3015-58D3-FA87-9BD8-3ADE-179B"
"adobe-idp-site-verification=0c06fad3-cf1c-4e40-8ec6-2507879c946e"
"adobe-sign-verification=ccc5d4bbde3e1c62a31238fd7983103730f30c32145a4ae2fe71264bbd3874ef"

NS

2 record(s)

ivan.ns.cloudflare.com.
lucy.ns.cloudflare.com.

SOA

1 record(s)

ivan.ns.cloudflare.com. dns.cloudflare.com. 2411195350 10000 2400 604800 1800

CAA

0 record(s)

—

Not configured

DS

1 record(s)

2371 13 2 7DA20B58F7CAB7143B2657706DEE2B0068FEEAE3769D3FAA65500DEC 99764289

DNSKEY

2 record(s)

257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==

RRSIG

0 record(s)

—

Not configured

NSEC

1 record(s)

\000.nps.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 ip4:96.127.113.23 include:_spf.nps.gov include:servers.mcsv.net -all

DMARC

Configured

v=DMARC1;p=reject;rua=mailto:dmarc_reports@doi.gov,mailto:reports@dmarc.cyber.dhs.gov,mailto:dmarc_agg@valigov.email

DKIM

Selector mail

v=DKIM1; k=rsa; h=sha256; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDqoO5syFukWG/mGwRZqXEJWhA99iHBsg75N0OeMXG3IWnX28cOBumgzqtQE5bHUMCeY0PX9Mn8GiQuQKHZ3iPCJVKYbANOh2HFMRiovWmviPJB8BO1wZ+f82RafRVLPEE3JGagmiJkrhE2RjXvvP0vYlaChYWbuy2SnWSeOhzayQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

NPS.gov Homepage (U.S. National Park Service)

Description

The National Park Service cares for special places saved by the American people so that all may experience our heritage.

Final URL

https://www.nps.gov/index.htm

HTTP status

206

HTTP

Status

HTTP/2 200

Final URL

https://www.nps.gov/index.htm

Version

Server

NPS.gov

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

DigiCert Inc

*.nps.gov

Valid from

2025-07-29T19:00:00-05:00

Valid until

2026-08-30T18:59:59-05:00

Days remaining

Protocol

TLSv1.2

Cipher

ECDHE-RSA-AES256-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

52.6.8.53

55,05 ms

Cloudflare

1.1.1.1

52.6.8.53

37,69 ms

Quad9

9.9.9.9

52.6.8.53

36,68 ms

OpenDNS

208.67.222.222

52.6.8.53

37,82 ms

AdGuard

94.140.14.14

52.6.8.53

50,82 ms

IP, geolocation and ASNAssociated network information

52.6.8.53

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

nps-gov.mail.protection.outlook.com

Port 25: Closed/unreachable - 24.7 ms - 
Port 465: Closed/unreachable - 4053.1 ms - 
Port 587: Closed/unreachable - 4030.6 ms -

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