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Total

DNS

Email

Security

Network

Availability

Domainstudocu.com

IPv43

IPv60

MX records5

StatusActive

Domain technical report

Studocu - Access Blocked

studocu.com

On Studocu you find all the lecture notes, summaries and study guides you need to pass your exams with better grades.

Generated: 2026-08-09T21:39:31-05:00 · Cached result

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IPv43

IPv60

MX5

NS4

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

3 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 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-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

157 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers8 / 35 pts · Security

2 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: ec2-100-61-32-173.compute-1.amazonaws.com

✓

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 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

3 record(s)

100.61.32.173
44.213.136.35
100.51.75.4

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.
1 aspmx.l.google.com.
10 alt3.aspmx.l.google.com.

TXT

15 record(s)

"facebook-domain-verification=f5xuglmud6k53m61td8gppkh4g4058"
"mixpanel-domain-verify=091f4b5d-e1d9-46cf-aac1-07d88ebccb69"
"tiktok-developers-site-verification=O8xqv6ccZRmf6S108TI6PXxw6nZFMWqt"
"digicert-verification=_vi4698wzvlf1brs063rprsvxl0dmoqx"
"segment-site-verification=TDVou4tglnhtuX2bwrZwiNCmIk9kkwYp"
"v=spf1 a mx include:mail.zendesk.com include:_spf.google.com -all"
"openai-domain-verification=dv-Eg6ycY7wxlPSalJAiopsgGgW"
"google-site-verification=NxpLqsW22V_Qyq4oZ5ko-F4s0fWKuGJcZVre2XeXOvo"
"cursor-domain-verification-mt7y30=DT1tXSvzSP55ybZz8EPZY4upW"
"ahrefs-site-verification_a69a5c7e0cf8d330a60d94b186c862c6814019cb36c1c358e37d5ee7b1a5d1ed"
"apple-domain-verification=HSVTdfFWvsHqaq9F"
"pinterest-site-verification=adec26a8fe07f712851f953c850e9b15"
"tiktok-developers-site-verification=cL91krwa1oHDYSboin7MZeiOfswmdGA0"
"google-site-verification=xhQG6tV0EZnwZK2JVXzFsLbMwWrsTCgGNPrG-L1pIqE"
"google-site-verification=2HBHIAqinuaIk8ZJde0g2Cy8jxG_QA4NpukPZfTQKSI"

NS

4 record(s)

ns-375.awsdns-46.com.
ns-1563.awsdns-03.co.uk.
ns-707.awsdns-24.net.
ns-1068.awsdns-05.org.

SOA

1 record(s)

ns-707.awsdns-24.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

CAA

7 record(s)

0 issue "pki.goog"
0 issue "sectigo.com"
0 issue "ssl.com"
0 issue "digicert.com"
0 issue "letsencrypt.org"
0 issue "amazon.com"
0 iodef "mailto:security@studocu.com"

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 a mx include:mail.zendesk.com include:_spf.google.com -all

DMARC

Configured

v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-reports@studocu.com

DKIM

Selector google

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDHSIpZ3+JT7Fz61FtEs93eUsEDI8RFOTZs7V30076qqTnCjfZ8q4Rk3QnctdnN16KEzsvu3pGj9KiuexwLnGl6v2TRcuAsvosb/xwy3r/ixPj2rBBOx4UEuus+PqtuoF9/iSM7XrB8M8RomRajpXTR2+sYg/SZs3hHEira4aXfDQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Studocu - Access Blocked

Description

On Studocu you find all the lecture notes, summaries and study guides you need to pass your exams with better grades.

Final URL

https://www.studocu.com:443/

HTTP status

403

HTTP

Status

HTTP/2 403

Final URL

https://www.studocu.com:443/

Version

Server

cloudflare

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Amazon

studeersnel.nl

Valid from

2025-12-15T18:00:00-06:00

Valid until

2027-01-14T17:59:59-06:00

Days remaining

157

Protocol

TLSv1.3

Cipher

TLS_AES_128_GCM_SHA256

Security headers

2 active

—

HSTSNot detected

—

Content Security PolicyNot detected

—

X-Content-Type-OptionsNot detected

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

—

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

100.51.75.4, 100.61.32.173, 44.213.136.35

54,68 ms

Cloudflare

1.1.1.1

100.51.75.4, 100.61.32.173, 44.213.136.35

51,90 ms

Quad9

9.9.9.9

100.51.75.4, 100.61.32.173, 44.213.136.35

42,78 ms

OpenDNS

208.67.222.222

100.51.75.4, 100.61.32.173, 44.213.136.35

85,60 ms

AdGuard

94.140.14.14

100.51.75.4, 100.61.32.173, 44.213.136.35

61,71 ms

IP, geolocation and ASNAssociated network information

100.61.32.173

No data

success

country

region

city

asn

organization

isp

44.213.136.35

No data

success

country

region

city

asn

organization

isp

100.51.75.4

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

alt4.aspmx.l.google.com

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4005.3 ms - 
Port 587: Closed/unreachable - 4020 ms -

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