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85
Total
85
DNS
95
Email
65
Security
85
Network
100
Availability
Domainuc3m.es
IPv41
IPv61
MX records5
StatusActive
Domain technical report

UC3M

uc3m.es

Generated: 2026-08-09T12:31:31-05:00 · Cached result

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IPv41
IPv61
MX5
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 chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓
CAA policy5 / 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-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

87 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

!
HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: 138-10-58-176.data.altia.es

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/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)
176.58.10.138

AAAA

1 record(s)
2a0a:7dc0:101:340:176:58:10:138

CNAME

0 record(s)
—

Not configured

MX

5 record(s)
5 ALT1.ASPMX.L.GOOGLE.COM.
10 ALT4.ASPMX.L.GOOGLE.COM.
1 ASPMX.L.GOOGLE.COM.
10 ALT3.ASPMX.L.GOOGLE.COM.
5 ALT2.ASPMX.L.GOOGLE.COM.

TXT

3 record(s)
"HARICA-eZv2Vjw0L3M7T1uRPXx"
"mandrill_verify.ohWfc6yrBBsbnfSLXizJPw"
"v=spf1 redirect=_spf.uc3m.es"

NS

4 record(s)
chico.rediris.es.
vorteX.uc3m.es.
sun.rediris.es.
saruman.uc3m.es.

SOA

1 record(s)
vorteX.uc3m.es. netmaster.uc3m.es. 2026080301 86400 7200 2592000 172800

CAA

6 record(s)
0 iodef "mailto:cert@uc3m.es"
0 issue "letsencrypt.org"
0 issue "sectigo.com"
0 issue "pki.goog"
0 issuewild "harica.gr"
0 issue "harica.gr"

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 redirect=_spf.uc3m.es

DMARC

Configured
v=DMARC1; p=none; rua=mailto:mailmaster+dmarc@uc3m.es; ruf=mailto:mailmaster+dmarc@uc3m.es; fo=1

DKIM

Selector google
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAiyIg7Ejah6/AVMp/iN+Af1e1ZTFNi+WA+5SKr8K2rQ+EMUG0qA4atxTwuo4tOrvT4maaiTE0s8p5z+hIIxKVvsZZS/gUh+OmCXeXaEX3/iSMLmaMQbCZI7udoYyvcw1KDGL6F6qRi+P/1e6dJjobDZPuF3oCs5Nd0sCa5W3wPqZ1i3mCFkIWr/MBm8BzSRS3dn9mxJq+mlgrFtdeEpQEEvaSX3bKEE9FJW21KBhvuFT+AcjYJTIYM9AdDxSUxDE6kzdUCqnCPJ1XUB/xC8KmafgNvtKpoppUq6NTpIquaSst7+CFsaWjJsrGYnSsA83Ic7MfT529eep65Iufit2l3wIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
UC3M
Description
Final URL
https://uc3m.es/
HTTP status
206

HTTP

Status
HTTP/1.1 200 OK
Final URL
https://uc3m.es/
Version
2
Server
Apache
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Hellenic Academic and Research Institutions CA
CN
uc3m.es
Valid from
2025-11-05T06:18:40-06:00
Valid until
2026-11-05T06:18:40-06:00
Days remaining
87
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES128-GCM-SHA256

Security headers

0 active
—
HSTSNot detected
—
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
176.58.10.138
64,27 ms
Cloudflare
1.1.1.1
176.58.10.138
121,42 ms
Quad9
9.9.9.9
176.58.10.138
42,86 ms
OpenDNS
208.67.222.222
176.58.10.138
137,28 ms
AdGuard
94.140.14.14
176.58.10.138
182,23 ms

IP, geolocation and ASNAssociated network information

176.58.10.138

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

ALT1.ASPMX.L.GOOGLE.COM

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4018.7 ms - 
Port 587: Closed/unreachable - 4020.7 ms -

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