SPF Check:
in-operation.net

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
Warning: Compliance breach for email deliverability & security

The domain in-operation.net does not fulfil the requirements for optimal deliverability to Google, Yahoo and other email service providers.

Mandatory IT baseline protection measures for email security are not fulfilled. There are risks of email misuse.

Summary of the SPF check

Does a valid SPF record exist?
An SPF record was found for the domain in-operation.net.
The SPF record for in-operation.net 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, 37 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 15.06.2024 at 19:52:48 clock.

Lookup for the domain:
in-operation.net
IP address to be checked:
no IP address specified
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Evaluation for the domain in-operation.net 

Nameserverset:
a.ns14.net
b.ns14.net
c.ns14.net
d.ns14.net
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
193.9.117.133 Leibold Sicherheits- & Informationstechnik GmbH blacklist 
193.9.117.134 Leibold Sicherheits- & Informationstechnik GmbH blacklist 
94.130.83.146 Hetzner Online GmbH blacklist 
128.140.14.181 Hetzner Online GmbH blacklist 
2001:41d0:701:1000:0:0:0:4125 OVH SAS blacklist 
142.132.252.116 Hetzner Online GmbH blacklist 
78.46.5.30 Hetzner Online GmbH blacklist 
138.201.63.43 Hetzner Online GmbH blacklist 
2a01:4f8:d0a:25af:0:0:0:2 Hetzner Online GmbH blacklist 
49.13.32.89 Hetzner Online GmbH blacklist 
78.47.217.57 Hetzner Online GmbH blacklist 
45.94.49.0/24
OVH SAS blacklist 
65.21.34.13 Hetzner Online GmbH blacklist 
88.99.166.98 Hetzner Online GmbH blacklist 
84.39.67.130 Brandl Services GmbH blacklist 
157.90.0.162 Hetzner Online GmbH blacklist 
23.88.56.209 Hetzner Online GmbH blacklist 
136.243.175.84 Hetzner Online GmbH blacklist 
94.130.134.156 Hetzner Online GmbH blacklist 
195.201.253.194 Hetzner Online GmbH blacklist 
85.10.213.131 Hetzner Online GmbH blacklist 
144.76.120.118 Hetzner Online GmbH blacklist 
144.76.58.90 Hetzner Online GmbH blacklist 
2a01:4f8:c0c:8a06:0:0:0:4 Hetzner Online GmbH blacklist 
2a01:4f8:d0a:22ed:0:0:0:2 Hetzner Online GmbH blacklist 
2a01:4f8:c0c:8a06:0:0:0:3 Hetzner Online GmbH blacklist 
2a01:4f8:c0c:8a06:0:0:0:5 Hetzner Online GmbH blacklist 
2a01:4f8:c0c:8a06:0:0:0:2 Hetzner Online GmbH blacklist 
2a01:4f8:c0c:8a06:0:0:0:1 Hetzner Online GmbH blacklist 
51.195.6.105 OVH SAS blacklist 
51.195.6.104 OVH SAS blacklist 
116.203.167.95 Hetzner Online GmbH blacklist 
51.195.6.103 OVH SAS blacklist 
94.130.237.61 Hetzner Online GmbH blacklist 
88.198.56.248 Hetzner Online GmbH blacklist 
88.198.201.25 Hetzner Online GmbH blacklist 
193.9.117.130 Leibold Sicherheits- & Informationstechnik GmbH blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: in-operation.net

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:spfserver.auctores.de
v=spf1 ip4:193.9.117.133 ip4:193.9.117.134 ip4:94.130.83.146 ip4:128.140.14.181 ip6:2001:41d0:701:1000:0:0:0:4125 ip4:142.132.252.116 ip4:78.46.5.30 ip4:138.201.63.43 ip6:2a01:4f8:d0a:25af:0:0:0:2 ip4:49.13.32.89 ip4:78.47.217.57 ip4:45.94.49.0/24 ip4:65.21.34.13 ip4:88.99.166.98 ip4:84.39.67.130 ip4:157.90.0.162 ip4:23.88.56.209 ip4:136.243.175.84 ip4:94.130.134.156 ip4:195.201.253.194 ip4:85.10.213.131 ip4:144.76.120.118 ip4:144.76.58.90 ip6:2a01:4f8:c0c:8a06:0:0:0:4 ip6:2a01:4f8:d0a:22ed:0:0:0:2 ip6:2a01:4f8:c0c:8a06:0:0:0:3 ip6:2a01:4f8:c0c:8a06:0:0:0:5 ip6:2a01:4f8:c0c:8a06:0:0:0:2 ip6:2a01:4f8:c0c:8a06:0:0:0:1 ip4:51.195.6.105 ip4:51.195.6.104 ip4:116.203.167.95 ip4:51.195.6.103 ip4:94.130.237.61 ip4:88.198.56.248 ip4:88.198.201.25 ip4:193.9.117.130 -all
ipv4:
193.9.117.133
ipv4:
193.9.117.134
ipv4:
94.130.83.146
ipv4:
128.140.14.181
ipv4:
142.132.252.116
ipv4:
78.46.5.30
ipv4:
138.201.63.43
ipv4:
49.13.32.89
ipv4:
78.47.217.57
ipv4:
45.94.49.0/24
ipv4:
65.21.34.13
ipv4:
88.99.166.98
ipv4:
84.39.67.130
ipv4:
157.90.0.162
ipv4:
23.88.56.209
ipv4:
136.243.175.84
ipv4:
94.130.134.156
ipv4:
195.201.253.194
ipv4:
85.10.213.131
ipv4:
144.76.120.118
ipv4:
144.76.58.90
ipv4:
51.195.6.105
ipv4:
51.195.6.104
ipv4:
116.203.167.95
ipv4:
51.195.6.103
ipv4:
94.130.237.61
ipv4:
88.198.56.248
ipv4:
88.198.201.25
ipv4:
193.9.117.130
ipv6:
2001:41d0:701:1000:0:0:0:4125
ipv6:
2a01:4f8:d0a:25af:0:0:0:2
ipv6:
2a01:4f8:c0c:8a06:0:0:0:4
ipv6:
2a01:4f8:d0a:22ed:0:0:0:2
ipv6:
2a01:4f8:c0c:8a06:0:0:0:3
ipv6:
2a01:4f8:c0c:8a06:0:0:0:5
ipv6:
2a01:4f8:c0c:8a06:0:0:0:2
ipv6:
2a01:4f8:c0c:8a06:0:0:0:1
unknown:

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

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:

ac.rz-nbg.de

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