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78
Total
70
DNS
90
Email
69
Security
50
Network
100
Availability
Domaintop500.org
IPv41
IPv60
MX records7
StatusActive
Domain technical report

Home - | TOP500

top500.org

Generated: 2026-08-09T17:52:12-05:00 · Cached result

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IPv41
IPv60
MX7
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 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 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

7 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

79 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 DNS30 / 30 pts · Network

PTR: top500.org

i
IPv4 diversity20 / 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/1.1 200 OK

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
3.125.90.157

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

7 record(s)
50 aspmx5.googlemail.com.
30 alt2.aspmx.l.google.com.
40 aspmx2.googlemail.com.
20 alt1.aspmx.l.google.com.
10 aspmx.l.google.com.
50 aspmx3.googlemail.com.
50 aspmx4.googlemail.com.

TXT

2 record(s)
"v=spf1 include:_spf.google.com  a mx ip4:3.125.90.157 ip4:35.158.214.49 ip4:52.28.212.99 -all"
"google-site-verification=YVDkc451NALv2c7LY40RmIH0SvU8PUducMmwLPYoLWY"

NS

2 record(s)
ns56.domaincontrol.com.
ns55.domaincontrol.com.

SOA

1 record(s)
ns55.domaincontrol.com. dns.jomax.net. 2026062002 28800 7200 604800 600

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  a mx ip4:3.125.90.157 ip4:35.158.214.49 ip4:52.28.212.99 -all

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:anas@top500.org, mailto:anas@top500.org; adkim=s; aspf=s

DKIM

Selector google
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2OMe41QNYOZ9KB7ZBf0iUt0watOyLgVC+5B5UriRJKZMClJxXhGKHva8yB7rKrwdU39qMhrTYEXjbPLtQTLVTO9s/yqZgOcfsGfgLepgIhLKD5ECVGlmMXn56ijuIHelyUHUf/ISfTtD3Ip+J7rbZm+CWZRQyNwQjhgLJ4gLJFnVbos1olOv4AFd3yICL/Rn2gjL9lio290JB3oCGSBmK8huzyXTJCwgBcr3Zz4U1z2Xbhe7YixeX/uVr5jvfRN+A6c4J39k5y7dnjTMYuamQ4m6pJSnV1NIHokCVpApjCiGR1hieNenKauAjJz1L4ZKe+J8jl2v05kqZxKqIZG9VQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Home - | TOP500
Description
Final URL
https://top500.org/
HTTP status
200

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://top500.org/
Version
2
Server
Apache/2.4.29 (Ubuntu)
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
top500.org
Valid from
2026-07-29T19:55:16-05:00
Valid until
2026-10-27T19:55:15-05:00
Days remaining
79
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

1 active
—
HSTSNot detected
—
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
3.125.90.157
92,39 ms
Cloudflare
1.1.1.1
3.125.90.157
69,91 ms
Quad9
9.9.9.9
3.125.90.157
78,00 ms
OpenDNS
208.67.222.222
3.125.90.157
81,15 ms
AdGuard
94.140.14.14
3.125.90.157
433,34 ms

IP, geolocation and ASNAssociated network information

3.125.90.157

Identified
success
Yes
country
Germany
country_code
DE
region
Hessen
city
Frankfurt am Main
latitude
50.110859
longitude
8.6821259
asn
16509
organization
A100 ROW GmbH
isp
Amazon.com, Inc.
timezone
Europe/Berlin

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

aspmx5.googlemail.com

Port 25: Closed/unreachable - 1.3 ms - 
Port 465: Closed/unreachable - 4042.9 ms - 
Port 587: Closed/unreachable - 4012.7 ms -

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