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73
Total
80
DNS
20
Email
81
Security
85
Network
100
Availability
Domainwww.ncbi.nlm.nih.gov
IPv41
IPv61
MX records1
StatusActive
Domain technical report

National Center for Biotechnology Information

www.ncbi.nlm.nih.gov

Generated: 2026-08-08T17:08:38-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv61
MX1
NS1

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 redundancy0 / 20 pts · Dns

1 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

1 MX record(s).

!
SPF0 / 25 pts · Mail

SPF policy not found.

!
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

48 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 DNS30 / 30 pts · Network

PTR: www.ncbi.nlm.nih.gov

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

2 record(s)
www.wip.ncbi.nlm.nih.gov.
130.14.29.110

AAAA

2 record(s)
www.wip.ncbi.nlm.nih.gov.
2607:f220:41e:4290::110

CNAME

1 record(s)
www.wip.ncbi.nlm.nih.gov.

MX

1 record(s)
www.wip.ncbi.nlm.nih.gov.

TXT

1 record(s)
www.wip.ncbi.nlm.nih.gov.

NS

1 record(s)
www.wip.ncbi.nlm.nih.gov.

SOA

1 record(s)
www.wip.ncbi.nlm.nih.gov.

CAA

1 record(s)
www.wip.ncbi.nlm.nih.gov.

DS

1 record(s)
www.wip.ncbi.nlm.nih.gov.

DNSKEY

1 record(s)
www.wip.ncbi.nlm.nih.gov.

RRSIG

1 record(s)
CNAME 8 5 7200 20260828062711 20260803062425 16545 ncbi.nlm.nih.gov. ie8nVkaxthno1exixefiGeza3YcpSP9stToBEz6j90pMXazVJBTaXPd5 nt+SVxbTT9GkTwgdZEsrLuQDGKa9wEQyFOIpUxupwxdQGRivLhLZMfkq ErvyROU0f+k5ljeS3ONEiYEvAsV51UrWPuB334a2P6OgX91H9bQYnO8f n948apBznQp+AUKYQEWNFcFdd3QvCrzCUPw6Bpv8CUo243KMmKDlBmBS 86ox0oDHqTtQMm+aztgaeacn7VLCIMzfrybSGKLiVIsH6Th0KzlCtU3o T8KDLZUnz4wtYj/T+Wjm5ze6txPdNESXJmzGjzTwxsvspayX1BUjJJVg zVHypw==

NSEC

0 record(s)
—

Not configured

NSEC3

1 record(s)
www.wip.ncbi.nlm.nih.gov.

SRV

1 record(s)
www.wip.ncbi.nlm.nih.gov.

NAPTR

1 record(s)
www.wip.ncbi.nlm.nih.gov.

TLSA

1 record(s)
www.wip.ncbi.nlm.nih.gov.

SSHFP

1 record(s)
www.wip.ncbi.nlm.nih.gov.

SPF

Not configured
—

Not configured

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
National Center for Biotechnology Information
Description
Final URL
https://www.ncbi.nlm.nih.gov/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://www.ncbi.nlm.nih.gov/
Version
3
Server
Apache
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
GoDaddy.com, Inc.
CN
*.ncbi.nlm.nih.gov
Valid from
2026-03-12T09:06:42-05:00
Valid until
2026-09-26T09:06:42-05:00
Days remaining
48
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

4 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
—
X-Content-Type-OptionsNot detected
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
—
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
130.14.29.110
30,98 ms
Cloudflare
1.1.1.1
130.14.29.110
21,98 ms
Quad9
9.9.9.9
130.14.29.110
36,21 ms
OpenDNS
208.67.222.222
130.14.29.110
49,56 ms
AdGuard
94.140.14.14
130.14.29.110
47,55 ms

IP, geolocation and ASNAssociated network information

130.14.29.110

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

www.wip.ncbi.nlm.nih.gov

Port 25: Closed/unreachable - 31.4 ms - 
Port 465: Closed/unreachable - 4020.8 ms - 
Port 587: Closed/unreachable - 4020.6 ms -

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