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66
Total
70
DNS
70
Email
73
Security
35
Network
60
Availability
Domainbuecher.de
IPv42
IPv60
MX records2
StatusActive
Domain technical report

Zugriff geblockt

buecher.de

Generated: 2026-08-10T14:36:52-05:00 · Cached result

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IPv42
IPv60
MX2
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 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

2 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

74 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 DNS0 / 30 pts · Network

PTR not detected.

✓
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

2 record(s)
104.16.146.108
104.16.147.108

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
10 de-smtp-inbound-2.mimecast.com.
10 de-smtp-inbound-1.mimecast.com.

TXT

6 record(s)
"v=spf1 include:de._netblocks.mimecast.com mx ip4:62.138.118.133 ip4:62.138.118.134 ip4:62.138.119.86 ip4:62.245.226.158 ip4:80.237.140.185 ip4:80.237.140.186 ip4:80.237.140.134 ~all"
"atlassian-domain-verification=SmpfzrCpzqa0csakddk/hYaoUpyE0OaCA6BT03tM5O0i0ExZdhJ3EN8T9Y9ioNmg"
"google-site-verification=k3fRhLwUnXtIflOcTJwREm32pKOaT5wDsuigoc43Fpc"
"google-site-verification=nFoCb38jN_3xFJAEXN-A2z4Gah7w2nv0Ncj_atyz4LQ"
"MS=ms23786737"
"0ed1fe018ac986e97bd1644adc896d8cb9cb5965f9"

NS

2 record(s)
ken.ns.cloudflare.com.
sasha.ns.cloudflare.com.

SOA

1 record(s)
ken.ns.cloudflare.com. dns.cloudflare.com. 2410604623 10000 2400 604800 1800

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:de._netblocks.mimecast.com mx ip4:62.138.118.133 ip4:62.138.118.134 ip4:62.138.119.86 ip4:62.245.226.158 ip4:80.237.140.185 ip4:80.237.140.186 ip4:80.237.140.134 ~all

DMARC

Configured
v=DMARC1; p=quarantine;

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Zugriff geblockt
Description
Final URL
https://buecher.de/
HTTP status
403

HTTP

Status
HTTP/2 403
Final URL
https://buecher.de/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
DigiCert Inc
CN
*.buecher.de
Valid from
2025-10-23T19:00:00-05:00
Valid until
2026-10-23T18:59:59-05:00
Days remaining
74
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

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
104.16.146.108, 104.16.147.108
69,74 ms
Cloudflare
1.1.1.1
104.16.146.108, 104.16.147.108
42,00 ms
Quad9
9.9.9.9
104.16.146.108, 104.16.147.108
28,32 ms
OpenDNS
208.67.222.222
104.16.146.108, 104.16.147.108
81,24 ms
AdGuard
94.140.14.14
104.16.146.108, 104.16.147.108
256,09 ms

IP, geolocation and ASNAssociated network information

104.16.146.108

No data
success
No
country
region
city
asn
organization
isp

104.16.147.108

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

de-smtp-inbound-2.mimecast.com

Port 25: Closed/unreachable - 0.8 ms - 
Port 465: Closed/unreachable - 4049.8 ms - 
Port 587: Closed/unreachable - 108.4 ms - 220 de-smtp-inbound-1.mimecast.com ESMTP; Mon, 10 Aug 2026 21:36:52 +0200

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