SPF Check:
sbb.spk-berlin.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 sbb.spk-berlin.de.
The SPF record for sbb.spk-berlin.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, 85 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 29.03.2024 at 01:51:39 clock.

Lookup for the domain:
sbb.spk-berlin.de
IP address to be checked:
no IP address specified
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Evaluation for the domain sbb.spk-berlin.de 

Nameserverset:
ns.staatsbibliothek-berlin.de
ns1.staatsbibliothek-berlin.de
deneb.dfn.de
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
104.47.0.0/17
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
132.148.124.0/24
GO-DADDY-COM-LLC blacklist 
134.119.224.0/19
Host Europe GmbH blacklist 
173.201.192.0/23
AS-26496-GO-DADDY-COM-LLC blacklist 
176.28.32.0/21
Host Europe GmbH blacklist 
178.77.104.0/21
Host Europe GmbH blacklist 
178.77.112.0/21
Host Europe GmbH blacklist 
178.77.80.0/21
Host Europe GmbH blacklist 
182.50.132.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
184.168.128.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
184.168.131.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
184.168.200.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
184.168.224.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
185.155.111.15/32
Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
185.155.111.4/32
Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
188.121.52.0/24
Host Europe GmbH blacklist 
188.121.53.0/24
Host Europe GmbH blacklist 
193.174.240.173 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. blacklist 
193.174.240.41 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. blacklist 
193.174.97.18 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. blacklist 
193.27.20.224/28
Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
194.94.132.0/24
Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. blacklist 
194.94.133.0/24
Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. blacklist 
195.37.138.0/24
Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. blacklist 
198.71.224.0/19
GO-DADDY-COM-LLC blacklist 
208.109.80.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
216.69.139.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
37.61.203.122/32
Host Europe GmbH blacklist 
40.107.0.0/16
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.92.0.0/15
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
5.175.14.0/24
Host Europe GmbH blacklist 
5.35.225.0/24
Host Europe GmbH blacklist 
5.35.226.0/24
Host Europe GmbH blacklist 
5.35.232.0/22
Host Europe GmbH blacklist 
50.63.8.0/22
GO-DADDY-COM-LLC blacklist 
52.100.0.0/14
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
52.26.164.15 AMAZON-02 blacklist 
52.89.65.132 AMAZON-02 blacklist 
54.184.82.65 AMAZON-02 blacklist 
54.214.222.76 AMAZON-02 blacklist 
62.153.132.3 Deutsche Telekom AG blacklist 
62.153.231.100 Deutsche Telekom AG blacklist 
68.178.181.0/24
GO-DADDY-COM-LLC blacklist 
68.178.213.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
68.178.252.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
72.167.168.0/24
AMAZON-02 blacklist 
72.167.172.0/24
AMAZON-AES blacklist 
72.167.218.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
72.167.234.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
72.167.238.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
80.237.130.0/24
Host Europe GmbH blacklist 
80.237.132.0/23
Host Europe GmbH blacklist 
80.237.137.0/24
Host Europe GmbH blacklist 
80.237.138.0/24
Host Europe GmbH blacklist 
80.66.4.12 EWE-Tel GmbH blacklist 
80.66.4.13 EWE-Tel GmbH blacklist 
80.66.4.19 EWE-Tel GmbH blacklist 
80.67.16.0/20
Host Europe GmbH blacklist 
83.169.24.0/21
Host Europe GmbH blacklist 
87.230.104.0/22
Host Europe GmbH blacklist 
87.230.40.0/21
Host Europe GmbH blacklist 
87.230.60.0/22
Host Europe GmbH blacklist 
91.216.90.0/24
IPHH Internet Port Hamburg GmbH blacklist 
91.250.64.0/21
Host Europe GmbH blacklist 
92.204.65.0/28
Host Europe GmbH blacklist 
92.204.71.0/24
Host Europe GmbH blacklist 
92.204.81.0/24
Host Europe GmbH blacklist 
92.51.170.64/27
Host Europe GmbH blacklist 
93.184.132.32 Information und Technik Nordrhein-Westfalen blacklist 
93.184.140.44 Information und Technik Nordrhein-Westfalen blacklist 
97.74.135.0/24
AS-26496-GO-DADDY-COM-LLC blacklist 
2001:4ca0:10b:6::c1ae:6112 Leibniz-Rechenzentrum blacklist 
2001:67c:680::15/128
Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
2001:67c:680:f04:250:56ff:fea9:4b96 Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
2001:67c:680:f04:250:56ff:fea9:e9a7 Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
2001:67c:680:f04::/64
Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
2001:67c:680:f04::233 Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
2001:67c:680:f04::234 Kommunale Datenverarbeitungszentrale Rhein-Erft-Rur blacklist 
2a00:1158:400:1::/120
Host Europe GmbH blacklist 
2a01:111:f400::/48
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403:8000::/51
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
2a01:111:f403::/49
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 
2a01:488::/32
Host Europe GmbH blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: sbb.spk-berlin.de

SPF record available?

We found an SPF record for the domain.

v=spf1

Additional external SPF records

We could find other records authorized in the SPF record

include:sbb-spf-include.sbb.spk-berlin.de
v=spf1 ip4:104.47.0.0/17 ip4:132.148.124.0/24 ip4:134.119.224.0/19 ip4:173.201.192.0/23 ip4:176.28.32.0/21 ip4:178.77.104.0/21 ip4:178.77.112.0/21 ip4:178.77.80.0/21 ip4:182.50.132.0/24 ip4:184.168.128.0/24 ip4:184.168.131.0/24 ip4:184.168.200.0/24 ip4:184.168.224.0/24 ip4:185.155.111.15/32 ip4:185.155.111.4/32 ip4:188.121.52.0/24 ip4:188.121.53.0/24 ip4:193.174.240.173 ip4:193.174.240.41 ip4:193.174.97.18 ip4:193.27.20.224/28 ip4:194.94.132.0/24 ip4:194.94.133.0/24 ip4:195.37.138.0/24 ip4:198.71.224.0/19 ip4:208.109.80.0/24 ip4:216.69.139.0/24 ip4:37.61.203.122/32 ip4:40.107.0.0/16 ip4:40.92.0.0/15 ip4:5.175.14.0/24 ip4:5.35.225.0/24 ip4:5.35.226.0/24 ip4:5.35.232.0/22 ip4:50.63.8.0/22 ip4:52.100.0.0/14 ip4:52.26.164.15 ip4:52.89.65.132 ip4:54.184.82.65 ip4:54.214.222.76 ip4:62.153.132.3 ip4:62.153.231.100 ip4:68.178.181.0/24 ip4:68.178.213.0/24 ip4:68.178.252.0/24 ip4:72.167.168.0/24 ip4:72.167.172.0/24 ip4:72.167.218.0/24 ip4:72.167.234.0/24 ip4:72.167.238.0/24 ip4:80.237.130.0/24 ip4:80.237.132.0/23 ip4:80.237.137.0/24 ip4:80.237.138.0/24 ip4:80.66.4.12 ip4:80.66.4.13 ip4:80.66.4.19 ip4:80.67.16.0/20 ip4:83.169.24.0/21 ip4:87.230.104.0/22 ip4:87.230.40.0/21 ip4:87.230.60.0/22 ip4:91.216.90.0/24 ip4:91.250.64.0/21 ip4:92.204.65.0/28 ip4:92.204.71.0/24 ip4:92.204.81.0/24 ip4:92.51.170.64/27 ip4:93.184.132.32 ip4:93.184.140.44 ip4:97.74.135.0/24 ip6:2001:4ca0:10b:6::c1ae:6112 ip6:2001:67c:680::15/128 ip6:2001:67c:680:f04:250:56ff:fea9:4b96 ip6:2001:67c:680:f04:250:56ff:fea9:e9a7 ip6:2001:67c:680:f04::/64 ip6:2001:67c:680:f04::233 ip6:2001:67c:680:f04::234 ip6:2a00:1158:400:1::/120 ip6:2a01:111:f400::/48 ip6:2a01:111:f403:8000::/51 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 ip6:2a01:488::/32 -all
ipv4:
104.47.0.0/17
ipv4:
132.148.124.0/24
ipv4:
134.119.224.0/19
ipv4:
173.201.192.0/23
ipv4:
176.28.32.0/21
ipv4:
178.77.104.0/21
ipv4:
178.77.112.0/21
ipv4:
178.77.80.0/21
ipv4:
182.50.132.0/24
ipv4:
184.168.128.0/24
ipv4:
184.168.131.0/24
ipv4:
184.168.200.0/24
ipv4:
184.168.224.0/24
ipv4:
185.155.111.15/32
ipv4:
185.155.111.4/32
ipv4:
188.121.52.0/24
ipv4:
188.121.53.0/24
ipv4:
193.174.240.173
ipv4:
193.174.240.41
ipv4:
193.174.97.18
ipv4:
193.27.20.224/28
ipv4:
194.94.132.0/24
ipv4:
194.94.133.0/24
ipv4:
195.37.138.0/24
ipv4:
198.71.224.0/19
ipv4:
208.109.80.0/24
ipv4:
216.69.139.0/24
ipv4:
37.61.203.122/32
ipv4:
40.107.0.0/16
ipv4:
40.92.0.0/15
ipv4:
5.175.14.0/24
ipv4:
5.35.225.0/24
ipv4:
5.35.226.0/24
ipv4:
5.35.232.0/22
ipv4:
50.63.8.0/22
ipv4:
52.100.0.0/14
ipv4:
52.26.164.15
ipv4:
52.89.65.132
ipv4:
54.184.82.65
ipv4:
54.214.222.76
ipv4:
62.153.132.3
ipv4:
62.153.231.100
ipv4:
68.178.181.0/24
ipv4:
68.178.213.0/24
ipv4:
68.178.252.0/24
ipv4:
72.167.168.0/24
ipv4:
72.167.172.0/24
ipv4:
72.167.218.0/24
ipv4:
72.167.234.0/24
ipv4:
72.167.238.0/24
ipv4:
80.237.130.0/24
ipv4:
80.237.132.0/23
ipv4:
80.237.137.0/24
ipv4:
80.237.138.0/24
ipv4:
80.66.4.12
ipv4:
80.66.4.13
ipv4:
80.66.4.19
ipv4:
80.67.16.0/20
ipv4:
83.169.24.0/21
ipv4:
87.230.104.0/22
ipv4:
87.230.40.0/21
ipv4:
87.230.60.0/22
ipv4:
91.216.90.0/24
ipv4:
91.250.64.0/21
ipv4:
92.204.65.0/28
ipv4:
92.204.71.0/24
ipv4:
92.204.81.0/24
ipv4:
92.51.170.64/27
ipv4:
93.184.132.32
ipv4:
93.184.140.44
ipv4:
97.74.135.0/24
ipv6:
2001:4ca0:10b:6::c1ae:6112
ipv6:
2001:67c:680::15/128
ipv6:
2001:67c:680:f04:250:56ff:fea9:4b96
ipv6:
2001:67c:680:f04:250:56ff:fea9:e9a7
ipv6:
2001:67c:680:f04::/64
ipv6:
2001:67c:680:f04::233
ipv6:
2001:67c:680:f04::234
ipv6:
2a00:1158:400:1::/120
ipv6:
2a01:111:f400::/48
ipv6:
2a01:111:f403:8000::/51
ipv6:
2a01:111:f403::/49
ipv6:
2a01:111:f403:c000::/51
ipv6:
2a01:111:f403:f000::/52
ipv6:
2a01:488::/32

E-Mail handling

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

-all
Fail (non-compliant e-mails are rejected)

Will be forwarded to another SPF record?

There is no reference to any other SPF record

Are the server addresses allowed to send e-mails?

In the SPF entry the mechanism 'a' has not been set.

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.

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

In the SPF entry the mechanism 'mx' has not been set

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 IPv4 addresses

No explicit IPv4 addresses in the SPF record have been authorised to send

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:

194.94.132.172

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