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86
Total
100
DNS
70
Email
73
Security
85
Network
100
Availability
Domainclinicaltrials.gov
IPv41
IPv61
MX records3
StatusActive
Domain technical report

ClinicalTrials.gov

clinicaltrials.gov

Generated: 2026-08-08T20:00:03-05:00 · Cached result

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IPv41
IPv61
MX3
NS4

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

4 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

3 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-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

48 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: 59.134.107.34.bc.googleusercontent.com

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)
34.107.134.59

AAAA

1 record(s)
2600:1901:0:c831::

CNAME

0 record(s)
—

Not configured

MX

3 record(s)
10 nihcesxway4.hub.nih.gov.
10 nihcesxway3.hub.nih.gov.
10 nihcesxway5.hub.nih.gov.

TXT

5 record(s)
"google-site-verification=PNIgJgOfWG3Bog_wPM4sYF_UW_QJ0T-JVZHEDuDCaD4"
"v=spf1 include:nih.gov ~all"
"o6lmcbo4cn7r8882vn65cpjcfv."
"GrclYGeUpoKjW0RtHDm8IoEXyQddPqL5pdiiXvLuV7za7OiNXC+wgFWXKhBJGAt5m6Qx3pTXVsPlpI18d7ykiQ=="
"google-site-verification=fOlJTfzhsN7Vee2dbKTOV2EleNnSVtj2RYj6BaQezbY"

NS

4 record(s)
ns-cloud-d4.googledomains.com.
ns-cloud-d2.googledomains.com.
ns-cloud-d3.googledomains.com.
ns-cloud-d1.googledomains.com.

SOA

1 record(s)
ns-cloud-d1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300

CAA

4 record(s)
0 issue "godaddy.com"
0 issuewild "godaddy.com"
0 issue "letsencrypt.org"
0 issuewild "letsencrypt.org"

DS

1 record(s)
22937 8 2 96E386912A192EEF239C7496B57260F6F2DFE051F8DBA209D4CC9DBF CBF1C932

DNSKEY

2 record(s)
256 3 8 AwEAAbI47VM/SNI2MOzuXCfOXpkU9J29ZZKBRutJnKreotvcUYrvUqAw x4tMzoH4Ip39+HforzWzqgO61t/3IWvcZklOaOcP+exZVBzZNUJAZqNo WfPINQDJ7bELHHj8qQwRSoJ41xSZ4uGulcowdUtJN3PZ8L49CF5ghegJ 66NQZ5AX
257 3 8 AwEAAafH56m26xUoG+OsGyGkVdOUsR4EFs6rkFtf707YHDRd5AlVOK0E SsWecJvkqjZyARcC1NXarfWyeKSU8Srv2KlcjMmnfV9At891gq4T8XwX wtOr0IagqiFowuCmIaPT/OV5ENMSdBaNF6ZMb7YsFo/1OFLrQek+P++x MxRb/Fhk3g9kOJ+6u3QVhzU+hgPajKDHMg5GSiICNOo45VhHay23VKrB 9h81XvZxcmb1Ypoemd5S4ASZXCnOa11HJjriD5xC3V9rN7dgOw6NS0df zChfQvc1f0BbgmTakdYTqOYA/93sv+w6IGKBWX38ArHs1guYoXtr2ZxU 2hvvGuF2Y38=

RRSIG

5 record(s)
NS 8 2 86400 20260828232033 20260806232033 12663 clinicaltrials.gov. NuwrhjZqyAIHGmDJXn4sn8niFJrMcw2qmTgVjh4Y9qabZtYJ0rcQ6S9P pHneL1VXv+2a7ei+auFdW6HxkZ5PuEY6kSIDpJ71ImuHycT4OGoKt9xx 3368k7hikZoBvWHHaji6QHTEaHl1mmZqmdQh+lKixn88Vsmn76kemK04 0zA=
SOA 8 2 21600 20260828232033 20260806232033 12663 clinicaltrials.gov. NZFnMa4GItJF2+l1NwPm4SCnr4w23iDxo7F9WICoSKsGiKw09asbRsjX +eZATV/Aa+tG2t2RMkc0R7hiz8ht8iD+25i7Mm3rc8GDWsjeHujiDH89 V5PHunvIR1yuJlp+3oStzKvn7yRnBqCIRvhSQqIr82eaoda1tzwEWLLg EVM=
MX 8 2 86400 20260828232033 20260806232033 12663 clinicaltrials.gov. o9JotTwirsqpRz/F0YPtUetVcK3BZhuFfzibGFOrXehE3oqPqvp4Cq34 /kPPQV8VDdp/m2ypPZGlRxGYfXg51aIZVJtFXNvKda4wkc0ftwJ4C9c6 nPsfOvroPmPQSiKDEvTEEqUfK/lOn7EbEZMPl7PKHeQxegFqyYk1jfgI V8A=
DS 13 2 3600 20260810015949 20260807235949 35496 gov. B+KRA/p5MIgTDiWQ1UrD+T1+n1aiVgP5ZbXcFKqi2L/g7s1WRXYR+6NH 9wlhJ0Wr7XkbuX8mozAtzeOwX0pl0Q==
CAA 8 2 86400 20260828232033 20260806232033 12663 clinicaltrials.gov. rdH7TEm5R6+bGzWnSjT/MzXqj+tpWZhWMT3Jqu3HhPRxL9rHyAok9q6Y 5c1v2IQ6+ERY2TLO7ymhebwTB+uoo5w2+dGYSIcY0VrKo4gUZ8s+wqh8 qiWEJc9F5B/ckHg0X6gMfKfymcnUHqthz3c+YJj/VWWKdPOg14rd4sP3 py8=

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 include:nih.gov ~all

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:8idhoybh@ag.us.dmarcian.com,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:8idhoybh@fr.us.dmarcian.com; fo=1;

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
ClinicalTrials.gov
Description
Final URL
https://clinicaltrials.gov/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://clinicaltrials.gov/
Version
3
Server
istio-envoy
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
GoDaddy.com, Inc.
CN
*.clinicaltrials.gov
Valid from
2026-03-12T09:32:09-05:00
Valid until
2026-09-26T09:32:09-05:00
Days remaining
48
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

2 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
✓
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
34.107.134.59
35,11 ms
Cloudflare
1.1.1.1
34.107.134.59
18,75 ms
Quad9
9.9.9.9
34.107.134.59
23,67 ms
OpenDNS
208.67.222.222
34.107.134.59
90,89 ms
AdGuard
94.140.14.14
34.107.134.59
51,66 ms

IP, geolocation and ASNAssociated network information

34.107.134.59

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

nihcesxway4.hub.nih.gov

Port 25: Closed/unreachable - 0.9 ms - 
Port 465: Closed/unreachable - 4019.3 ms - 
Port 587: Closed/unreachable - 4020 ms -

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