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79
Total
70
DNS
90
Email
73
Security
50
Network
100
Availability
Domainistanbul.edu.tr
IPv41
IPv60
MX records5
StatusActive
Domain technical report

İstanbul Üniversitesi | Açık Kapı, Açık Bilim

istanbul.edu.tr

İstanbul Üniversitesi | Açık Kapı, Açık Bilim

Generated: 2026-08-11T04:08:42-05:00 · Cached result

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IPv41
IPv60
MX5
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

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

107 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: www.istanbul.edu.tr

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/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
194.27.128.98

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

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

TXT

4 record(s)
"adobe-idp-site-verification=498beef36b3f33b77b9d1fb24ceb1c6c3da7d59fe244670cd83eef3dcebae488"
"v=spf1 include:spf.mailjet.com  ip4:194.27.128.0/24 include:_spf.google.com ~all"
"MS=CF582613315205117F99BD01013DFAB5970C1575"
"google-site-verification=Xz1VZDUx6RyqYVlVcxWwk2W0PdruEcq1TUsrYFPRO18"

NS

2 record(s)
palamut.istanbul.edu.tr.
akasya.istanbul.edu.tr.

SOA

1 record(s)
akasya.istanbul.edu.tr. iusistem.istanbul.edu.tr. 2018033785 3600 120 1209600 86400

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.mailjet.com  ip4:194.27.128.0/24 include:_spf.google.com ~all

DMARC

Configured
v=DMARC1; p=none; sp=none; rua=mailto:gezginci@istanbul.edu.tr; rf=afrf; pct=100; ri=86400

DKIM

Selector mailjet
k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDRpBOoVTDUZ9ZeM5ppRSW70jSBfwzk5z4ZXLH5vCu6SCBXvNPnfEWhcBbSTpBQzaIO7uZUr5ukzP0JT4qr53aG5qXN+QQRTPdcUKEc8dlbfK/amTKj6zlh5aqACxGRDXqwCnD8rRLk6R5Jw0hGVksEwgMBS3Zs2lRaBJ51m5qerQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
İstanbul Üniversitesi | Açık Kapı, Açık Bilim
Description
İstanbul Üniversitesi | Açık Kapı, Açık Bilim
Final URL
https://www.istanbul.edu.tr/tr
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.istanbul.edu.tr/tr
Version
3
Server
Microsoft-IIS/10.0
X-Powered-By
ASP.NET

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
*.istanbul.edu.tr
Valid from
2026-05-11T19:00:00-05:00
Valid until
2026-11-26T17:59:59-06:00
Days remaining
107
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

2 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
X-Content-Type-OptionsImplemented
—
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
194.27.128.98
61,88 ms
Cloudflare
1.1.1.1
194.27.128.98
422,21 ms
Quad9
9.9.9.9
194.27.128.98
453,08 ms
OpenDNS
208.67.222.222
194.27.128.98
156,76 ms
AdGuard
94.140.14.14
194.27.128.98
447,97 ms

IP, geolocation and ASNAssociated network information

194.27.128.98

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

alt3.aspmx.l.google.com

Port 25: Closed/unreachable - 1.1 ms - 
Port 465: Closed/unreachable - 4002.6 ms - 
Port 587: Closed/unreachable - 4021.2 ms -

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