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78
Total
70
DNS
90
Email
100
Security
50
Network
60
Availability
Domainopen.edu
IPv41
IPv60
MX records1
StatusActive
Domain technical report

Just a moment...

open.edu

Generated: 2026-08-09T09:16:11-05:00 · Cached result

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IPv41
IPv60
MX1
NS6

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

6 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

1 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

151 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

✓
HTTP security headers35 / 35 pts · Security

9 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: open-edu-csvip.open.ac.uk

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 response0 / 40 pts · Availability

HTTP/2 403

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
137.108.200.104

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 open-edu.mail.protection.outlook.com.

TXT

4 record(s)
"google-site-verification=KLQmkBsMNGjV3_nUmOkJw07lK3ZIXeFBPvilow84wXk"
"B6B0975F-29DA-4863-AD9B-4CE3671954ED"
"v=spf1 include:spf.protection.outlook.com  ip4:137.108.232.47 ip4:137.108.232.48 ip4:137.108.170.8 ip4:137.108.170.38 ip4:137.108.170.40 ip4:137.108.185.44 -all"
"QuoVadis=9a987046-9ec6-40b4-a739-41ad71aa5c85"

NS

6 record(s)
dns3.easydns.org.
nse-2.open.ac.uk.
dns2.easydns.net.
nse-0.open.ac.uk.
dns1.easydns.com.
nse-1.open.ac.uk.

SOA

1 record(s)
nse-0.open.ac.uk. hostmaster.open.ac.uk. 626265871 1200 180 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.protection.outlook.com  ip4:137.108.232.47 ip4:137.108.232.48 ip4:137.108.170.8 ip4:137.108.170.38 ip4:137.108.170.40 ip4:137.108.185.44 -all

DMARC

Configured
v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:dmarc@open.ac.uk,mailto:e1pWdXALyij@dmarc-rua.mailcheck.service.ncsc.gov.uk

DKIM

Selector selector1
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAteXvxPyjB2TOUKNJY/6/z3PmH2UK+AJM62s3W1z72zltHJAna4Dx5TPZyb5l4QZBY5gIF11OjG8Hd5O+PdCgkZ7x98pzf3lS6iYajk0EAzT8H9Bif7XtOUZ/CR/CRYx43gjwp06Jzn625Uugd3odJyH4UiWt8MdFFfiMzfYjndhd0VVie/+kMS1ei2zHMRRA3PPHZdAnuOgw0rIy9HlsKvdErNiS5d2K/UaflFL7bdWzDlDhNMDe0aPBv78ce20nrTYs14X11YNi4jFP3QZRBHbpfy4keAxqmd8noe/1zFW3GpKua4+4KXAwV0/lFwlKPzqEd70Wlkwe4ny613z4hQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Just a moment...
Description
Final URL
https://www.open.edu/
HTTP status
403

HTTP

Status
HTTP/2 403
Final URL
https://www.open.edu/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Sectigo Limited
CN
open.edu
Valid from
2026-06-22T19:00:00-05:00
Valid until
2027-01-07T17:59:59-06:00
Days remaining
151
Protocol
TLSv1.2
Cipher
ECDHE-RSA-AES256-GCM-SHA384

Security headers

9 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
137.108.200.104
74,38 ms
Cloudflare
1.1.1.1
137.108.200.104
137,76 ms
Quad9
9.9.9.9
137.108.200.104
195,79 ms
OpenDNS
208.67.222.222
137.108.200.104
107,63 ms
AdGuard
94.140.14.14
137.108.200.104
149,55 ms

IP, geolocation and ASNAssociated network information

137.108.200.104

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

open-edu.mail.protection.outlook.com

Port 25: Closed/unreachable - 37.3 ms - 
Port 465: Closed/unreachable - 4057.4 ms - 
Port 587: Closed/unreachable - 4045.7 ms -

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