SPF Check:
dewetech.de

1. Specify domain name

Enter a domain to be checked for the SPF record
2. Specify IP address (optional)
Enter any IP address to check if it is authorized to send e-mails by the SPF record

What is the SPF lookup for?

With the SPF lookup you analyze the SPF record of a domain for errors, security risks and authorized IP addresses. Optionally, you can specify an IP address to check if it is authorized to send e-mail on behalf of the domain. The SPF lookup analyzes registered TXT records in real time. If you want to specify an SPF record manually, use the SPF Analyzer.

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SPF check passed

Your SPF record check result
  •   SPF record found
  •   Syntax check: 0 errors
  •   Email Anti-Spoofing: Good
Summary of the SPF check

Does a valid SPF record exist?
An SPF record was found for the domain dewetech.de.
The SPF record for dewetech.de is valid.
The syntax check of the SPF record shows no obvious errors.

Which IP-s are legitimate to send emails?
The SPF record contains a reference to external rules, which means that the validity of the SPF record depends on at least one other domain. A detailed list of the rules used externally can be found in the analysis result. In total, 83 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 25.07.2024 at 17:09:19 clock.

Lookup for the domain:
dewetech.de
IP address to be checked:
no IP address specified
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Evaluation for the domain dewetech.de 

Nameserverset:
root-dns.netcup.net
third-dns.netcup.net
second-dns.netcup.net
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
37.120.177.96 netcup GmbH blacklist 
18.185.115.147 AMAZON-02 blacklist 
18.185.115.145 AMAZON-02 blacklist 
18.185.115.146 AMAZON-02 blacklist 
3.93.157.0/24
AMAZON-AES blacklist 
3.210.190.0/24
AMAZON-AES blacklist 
18.208.124.128/25
AMAZON-AES blacklist 
54.174.52.0/24
AMAZON-AES blacklist 
54.174.57.0/24
AMAZON-AES blacklist 
54.174.59.0/24
AMAZON-AES blacklist 
54.174.60.0/23
AMAZON-AES blacklist 
54.174.63.0/24
AMAZON-AES blacklist 
108.179.144.0/20
AMAZON-02 blacklist 
139.180.17.0/24
AMAZON-AES blacklist 
141.193.184.32/27
AMAZON-AES blacklist 
141.193.184.64/26
AMAZON-AES blacklist 
141.193.184.128/25
AMAZON-AES blacklist 
141.193.185.32/27
AMAZON-02 blacklist 
141.193.185.64/26
AMAZON-02 blacklist 
141.193.185.128/25
AMAZON-02 blacklist 
143.244.80.0/20
AMAZON-AES blacklist 
158.247.16.0/20
AMAZON-AES blacklist 
18.208.22.64/26
AMAZON-AES blacklist 
18.208.22.128/25
AMAZON-AES blacklist 
18.185.115.128/26
AMAZON-02 blacklist 
18.185.115.0/25
AMAZON-02 blacklist 
13.238.202.0/25
AMAZON-02 blacklist 
13.238.202.128/26
AMAZON-02 blacklist 
18.176.203.128/25
AMAZON-02 blacklist 
13.213.174.128/25
AMAZON-02 blacklist 
18.177.156.0/25
AMAZON-02 blacklist 
13.213.220.0/25
AMAZON-02 blacklist 
107.22.223.18 AMAZON-AES blacklist 
52.70.252.86 AMAZON-AES blacklist 
35.156.245.132 AMAZON-02 blacklist 
18.156.0.20 AMAZON-02 blacklist 
3.72.196.143 AMAZON-02 blacklist 
54.146.4.63 AMAZON-AES blacklist 
54.174.82.86 AMAZON-AES blacklist 
18.188.9.192/26
AMAZON-02 blacklist 
18.188.239.128/26
AMAZON-02 blacklist 
34.253.238.128/26
AMAZON-02 blacklist 
34.253.238.192/26
AMAZON-02 blacklist 
15.168.56.0/25
AMAZON-02 blacklist 
15.168.49.64/26
AMAZON-02 blacklist 
15.168.56.128/26
AMAZON-02 blacklist 
195.52.64.86 ecotel communication ag blacklist 
213.23.100.254 Vodafone GmbH blacklist 
213.23.100.248 Vodafone GmbH blacklist 
40.92.0.0/15
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.107.0.0/16
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.100.0.0/14
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
104.47.0.0/17
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f400::/48
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403::/49
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403:8000::/51
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403:c000::/51
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403:f000::/52
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.92.116.22 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.86.225.121 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
13.74.137.176 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.113.3.253 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.49.202.3 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.240.209.173 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
13.93.42.39 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.86.165.91 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.79.220.33 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.42.205.31 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.138.216.130 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.98.2.159 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.93.157.195 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.86.217.129 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
23.100.56.64 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.58.22.103 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
23.100.43.194 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.79.222.204 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
13.77.59.28 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.114.221.220 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
20.97.70.227 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.69.19.60 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.170.22.60 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
13.94.95.171 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.237.30.247 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: dewetech.de

SPF record available?

We found an SPF record for the domain.

v=spf1

Are the server addresses allowed to send e-mails?

The mechanism 'a' was set in the SPF record. The following IP addresses are allowed to send

37.120.177.96

Are the registered mail servers allowed to send e-mails?

The mechanism 'mx' was set in the SPF entry. The following hosts are allowed to send

dewetech.in.tmes.trendmicro.eu
dewetech.in.tmes.trendmicro.eu
dewetech.in.tmes.trendmicro.eu

Additionally authorized IPv4 addresses

Explicit IPv4 addresses in the SPF record have been authorized to send

195.52.64.86
213.23.100.254
213.23.100.248

Additional external SPF records

We could find other records authorized in the SPF record

include:25160332.spf05.hubspotemail.net
v=spf1 ip4:3.93.157.0/24 ip4:3.210.190.0/24 ip4:18.208.124.128/25 ip4:54.174.52.0/24 ip4:54.174.57.0/24 ip4:54.174.59.0/24 ip4:54.174.60.0/23 ip4:54.174.63.0/24 ip4:108.179.144.0/20 ip4:139.180.17.0/24 ip4:141.193.184.32/27 ip4:141.193.184.64/26 ip4:141.193.184.128/25 ip4:141.193.185.32/27 ip4:141.193.185.64/26 ip4:141.193.185.128/25 ip4:143.244.80.0/20 ip4:158.247.16.0/20 -all
ipv4:
3.93.157.0/24
ipv4:
3.210.190.0/24
ipv4:
18.208.124.128/25
ipv4:
54.174.52.0/24
ipv4:
54.174.57.0/24
ipv4:
54.174.59.0/24
ipv4:
54.174.60.0/23
ipv4:
54.174.63.0/24
ipv4:
108.179.144.0/20
ipv4:
139.180.17.0/24
ipv4:
141.193.184.32/27
ipv4:
141.193.184.64/26
ipv4:
141.193.184.128/25
ipv4:
141.193.185.32/27
ipv4:
141.193.185.64/26
ipv4:
141.193.185.128/25
ipv4:
143.244.80.0/20
ipv4:
158.247.16.0/20
include:spf.tmes.trendmicro.com
v=spf1 ip4:18.208.22.64/26 ip4:18.208.22.128/25 ip4:18.185.115.128/26 ip4:18.185.115.0/25 ip4:13.238.202.0/25 ip4:13.238.202.128/26 ip4:18.176.203.128/25 ip4:13.213.174.128/25 ip4:18.177.156.0/25 ip4:13.213.220.0/25 include:spfb.tmes.trendmicro.com ~all
ipv4:
18.208.22.64/26
ipv4:
18.208.22.128/25
ipv4:
18.185.115.128/26
ipv4:
18.185.115.0/25
ipv4:
13.238.202.0/25
ipv4:
13.238.202.128/26
ipv4:
18.176.203.128/25
ipv4:
13.213.174.128/25
ipv4:
18.177.156.0/25
ipv4:
13.213.220.0/25
include:spfb.tmes.trendmicro.com
v=spf1 ip4:107.22.223.18 ip4:52.70.252.86 ip4:35.156.245.132 ip4:18.156.0.20 ip4:3.72.196.143 ip4:54.146.4.63 ip4:54.174.82.86 include:spfc.tmes.trendmicro.com ~all
ipv4:
107.22.223.18
ipv4:
52.70.252.86
ipv4:
35.156.245.132
ipv4:
18.156.0.20
ipv4:
3.72.196.143
ipv4:
54.146.4.63
ipv4:
54.174.82.86
include:spfc.tmes.trendmicro.com
v=spf1 ip4:18.188.9.192/26 ip4:18.188.239.128/26 ip4:34.253.238.128/26 ip4:34.253.238.192/26 ip4:15.168.56.0/25 ip4:15.168.49.64/26 ip4:15.168.56.128/26 ~all
ipv4:
18.188.9.192/26
ipv4:
18.188.239.128/26
ipv4:
34.253.238.128/26
ipv4:
34.253.238.192/26
ipv4:
15.168.56.0/25
ipv4:
15.168.49.64/26
ipv4:
15.168.56.128/26
include:spf.protection.outlook.com
v=spf1 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:8000::/51 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 -all
ipv4:
40.92.0.0/15
ipv4:
40.107.0.0/16
ipv4:
52.100.0.0/14
ipv4:
104.47.0.0/17
ipv6:
2a01:111:f400::/48
ipv6:
2a01:111:f403::/49
ipv6:
2a01:111:f403:8000::/51
ipv6:
2a01:111:f403:c000::/51
ipv6:
2a01:111:f403:f000::/52
include:spf.emailsignatures365.com
v=spf1 ip4:20.92.116.22 ip4:40.86.225.121 ip4:13.74.137.176 ip4:40.113.3.253 ip4:20.49.202.3 ip4:52.240.209.173 ip4:13.93.42.39 ip4:40.86.165.91 ip4:20.79.220.33 ip4:20.42.205.31 ip4:52.138.216.130 ip4:20.98.2.159 ip4:20.93.157.195 ip4:40.86.217.129 ip4:23.100.56.64 ip4:20.58.22.103 ip4:23.100.43.194 ip4:20.79.222.204 ip4:13.77.59.28 ip4:40.114.221.220 ip4:20.97.70.227 ip4:40.69.19.60 ip4:52.170.22.60 ip4:13.94.95.171 ip4:52.237.30.247 -all
ipv4:
20.92.116.22
ipv4:
40.86.225.121
ipv4:
13.74.137.176
ipv4:
40.113.3.253
ipv4:
20.49.202.3
ipv4:
52.240.209.173
ipv4:
13.93.42.39
ipv4:
40.86.165.91
ipv4:
20.79.220.33
ipv4:
20.42.205.31
ipv4:
52.138.216.130
ipv4:
20.98.2.159
ipv4:
20.93.157.195
ipv4:
40.86.217.129
ipv4:
23.100.56.64
ipv4:
20.58.22.103
ipv4:
23.100.43.194
ipv4:
20.79.222.204
ipv4:
13.77.59.28
ipv4:
40.114.221.220
ipv4:
20.97.70.227
ipv4:
40.69.19.60
ipv4:
52.170.22.60
ipv4:
13.94.95.171
ipv4:
52.237.30.247

E-Mail handling

How should the checkHost() function of the e-mail server handle the e-mail? (syntax )

~all
SoftFail (non-compliant e-mails are accepted but marked)

Will be forwarded to another SPF record?

There is no reference to any other SPF record

Additionally authorized A-records?

In addition to the A-Records stored in the DNS, we could not find any other records authorized in the SPF-Record.

Additionally authorized MX records

We could not find any other records authorized in the SPF record besides the MX records stored in the DNS

Additionally authorized IPv6 addresses

No explicit IPv6 addresses in the SPF record have been authorised to send

How is the sender informed?

The exp mechanism acts as a return to the sender if the IP address was not authorized to send and notify them. None was found.

PTR (obsolete mechanism)

The ptr mechanism is deprecated, slow and insecure and should not be used

PTR:

The ptr mechanism is deprecated, slow and insecure and should not be used

Authorize IP addresses with markers

When SPF is evaluated, macros can specifically authorize Ip addresses based on the request or connection of the user or client (RFC7208 )

Receiver address

analysis.ra-missing

Amount of reports

analysis.rp-missing

Report selection

analysis.rr-missing

Unknown mechanisms

No unknown mechanisms were found in the SPF record.

Recently performed SPF lookups

Server IP Address

We have determined the following IP address for the domain:

No domain specified

Reverse address

We have determined the following name for the server IP address:

dewetech.de

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