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77
Total
70
DNS
90
Email
69
Security
35
Network
100
Availability
Domainrcsb.org
IPv44
IPv60
MX records5
StatusActive
Domain technical report

RCSB PDB: Homepage

rcsb.org

As a member of the wwPDB, the RCSB PDB curates and annotates PDB data according to agreed upon standards. The RCSB PDB also provides a variety of tools and resources. Users can perform simple and advanced searches based on annotations relating to sequence, structure and function. These molecules are visualized, downloaded, and analyzed by users who range from students to specialized scientists.

Generated: 2026-08-10T00:42:23-05:00 · Cached result

IPv44
IPv60
MX5
NS4

DiagnosticsMain findings and recommendations

IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 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 chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

MX records20 / 20 pts · Mail

5 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

170 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 connectivity0 / 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)
132.249.213.19
128.6.158.51
132.249.213.18
128.6.158.50

AAAA

0 record(s)

Not configured

CNAME

0 record(s)

Not configured

MX

5 record(s)
10 alt4.aspmx.l.google.com.
5 alt1.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
10 alt3.aspmx.l.google.com.
1 aspmx.l.google.com.

TXT

2 record(s)
"v=spf1 include:_spf.google.com include:_spf.createsend.com ~all"
"google-site-verification=A8M31jAX8SUgQYzbnF5r-wgykna2i5Hp4J9fziVD9Sg"

NS

4 record(s)
dns4.p03.nsone.net.
dns3.p03.nsone.net.
dns1.p03.nsone.net.
dns2.p03.nsone.net.

SOA

1 record(s)
dns1.p07.nsone.net. hostmaster.nsone.net. 1776961356 3600 600 1209600 3600

CAA

0 record(s)

Not configured

DS

0 record(s)

Not configured

DNSKEY

0 record(s)

Not configured

RRSIG

0 record(s)

Not configured

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:_spf.google.com include:_spf.createsend.com ~all

DMARC

Configured
v=DMARC1; p=quarantine; rua=mailto:postmaster@rcsb.org

DKIM

Selector google
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlNIA+wyw5xjcrPIQ+7nzKX7cEezCB3pX4xlOu04tP9klTZ99bintwLZrYqMO5Q+0xEzB/aLJsLaTZsMr5cymOSbvvPNpBlUPR3xnT8zwyY5svUnYTjjpginwaabwnreKZ5FKkryyFyddKVEx3u28J2bH8+bpHij6zd2fPFDVDbERJ5fZ6ONvBZ94Dpn47JucCeE5dpSCJrqJGbwp5Rl53KrCRHzdZHWcI5T1C5jsg0cCQMPiouPzzY/8jVLBk6H3G+XtDtul7YxdiHKjhb1cs87rryYiAJYck0VwyiiM53lVWnFUXdmmX9AQD5Ksv/Kkl/TO49vtZe6DqvgxfEmhGwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
RCSB PDB: Homepage
Description
As a member of the wwPDB, the RCSB PDB curates and annotates PDB data according to agreed upon standards. The RCSB PDB also provides a variety of tools and resources. Users can perform simple and advanced searches based on annotations relating to sequence, structure and function. These molecules are visualized, downloaded, and analyzed by users who range from students to specialized scientists.
Final URL
https://rcsb.org/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://rcsb.org/
Version
3
Server
X-Powered-By
Express

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
InCommon, LLC
CN
www.rcsb.org
Valid from
2026-07-12T19:00:00-05:00
Valid until
2027-01-27T17:59:59-06:00
Days remaining
170
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
128.6.158.50, 128.6.158.51, 132.249.213.18, 132.249.213.19
73,62 ms
Cloudflare
1.1.1.1
128.6.158.50, 128.6.158.51, 132.249.213.18, 132.249.213.19
50,30 ms
Quad9
9.9.9.9
128.6.158.50, 128.6.158.51, 132.249.213.18, 132.249.213.19
66,71 ms
OpenDNS
208.67.222.222
128.6.158.50, 128.6.158.51, 132.249.213.18, 132.249.213.19
73,73 ms
AdGuard
94.140.14.14
128.6.158.50, 128.6.158.51, 132.249.213.18, 132.249.213.19
399,95 ms

IP, geolocation and ASNAssociated network information

132.249.213.19

No data
success
No
country
region
city
asn
organization
isp

128.6.158.51

No data
success
No
country
region
city
asn
organization
isp

132.249.213.18

No data
success
No
country
region
city
asn
organization
isp

128.6.158.50

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

alt4.aspmx.l.google.com

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4020.2 ms - 
Port 587: Closed/unreachable - 4019.1 ms -

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