SPF Check:
it-seal.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
Lookup for the domain:
it-seal.de
IP address to be checked:
no IP address specified
  •   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 it-seal.de.
The SPF record for it-seal.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, 122 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 08.02.2023 at 13:40:27 clock.

Complete check for email deliverability & security
SPF is just one aspect among many.
Secure your e-mail traffic holistically.
Complete check for email deliverability & security

Evaluation for the domain it-seal.de 

Nameserverset:
dns200.anycast.me
ns200.anycast.me
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
94.100.132.57 MK Netzdienste GmbH & Co. KG blacklist 
94.100.132.100 MK Netzdienste GmbH & Co. KG blacklist 
83.246.65.85 Hostway Deutschland 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::/50
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 
51.4.72.0/24
- blacklist 
51.5.72.0/24
- blacklist 
51.5.80.0/27
- blacklist 
20.47.149.138/32
MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
51.4.80.0/27
- blacklist 
2a01:4180:4051:0800::/64
- blacklist 
2a01:4180:4050:0800::/64
- blacklist 
2a01:4180:4051:0400::/64
- blacklist 
2a01:4180:4050:0400::/64
- blacklist 
103.151.192.0/23
AMAZON-02 blacklist 
185.12.80.0/22
- blacklist 
188.172.128.0/20
- blacklist 
192.161.144.0/20
- blacklist 
216.198.0.0/18
- blacklist 
83.246.65.0/24
Hostway Deutschland GmbH blacklist 
185.140.204.0/22
HKN GmbH blacklist 
94.100.128.0/20
- blacklist 
81.20.94.0/24
QualityHosting AG blacklist 
173.45.18.0/24
AMC blacklist 
52.62.123.207/32
AMAZON-02 blacklist 
52.62.108.212/32
AMAZON-02 blacklist 
129.232.203.80/28
xneelo blacklist 
209.172.38.64/27
IWEB-AS blacklist 
108.163.133.224/27
IWEB-AS blacklist 
193.135.100.0/27
Bluewin blacklist 
199.27.221.76 EPIC-IS blacklist 
216.46.11.238 OPENFACE blacklist 
216.46.11.244 OPENFACE blacklist 
199.27.221.81 EPIC-IS blacklist 
199.27.221.82 EPIC-IS blacklist 
52.62.114.130 AMAZON-02 blacklist 
52.62.125.178 AMAZON-02 blacklist 
92.54.27.0/24
Claranet Limited blacklist 
92.204.39.0/24
Host Europe GmbH blacklist 
92.204.37.0/24
Host Europe GmbH blacklist 
92.204.43.0/24
Host Europe GmbH blacklist 
92.205.48.0/21
Host Europe GmbH blacklist 
80.67.16.0/20
Host Europe GmbH blacklist 
77.91.232.0/21
Host Europe GmbH blacklist 
62.67.200.0/24
LEVEL3 blacklist 
93.187.232.0/21
Host Europe GmbH blacklist 
188.93.8.0/21
Host Europe GmbH blacklist 
185.21.100.0/22
Host Europe GmbH blacklist 
93.180.152.0/21
Host Europe GmbH blacklist 
37.200.96.0/21
Host Europe GmbH blacklist 
176.221.40.0/21
Host Europe GmbH blacklist 
141.0.16.0/21
Host Europe GmbH blacklist 
46.252.16.0/20
Host Europe GmbH blacklist 
109.239.48.0/20
Host Europe GmbH blacklist 
134.119.228.0/24
Host Europe GmbH blacklist 
134.119.0.0/17
Host Europe GmbH blacklist 
134.119.128.0/19
Host Europe GmbH blacklist 
134.119.160.0/20
Host Europe GmbH blacklist 
134.119.224.0/19
Host Europe GmbH blacklist 
92.204.33.0/24
Host Europe GmbH blacklist 
92.204.55.0/24
Host Europe GmbH blacklist 
92.204.58.0/24
Host Europe GmbH blacklist 
134.119.0.0/24
Host Europe GmbH blacklist 
92.204.236.0/24
Host Europe GmbH blacklist 
92.204.239.0/24
Host Europe GmbH blacklist 
2001:1520:a:0:0:0:0:0/56
Host Europe GmbH blacklist 
2a00:1158:0:300::/56
Host Europe GmbH blacklist 
2a00:1158:400:1::/120
Host Europe GmbH blacklist 
2a00:1158:5::/48
Host Europe GmbH blacklist 
92.205.64.0/24
Host Europe GmbH blacklist 
2a00:1158:0005:0800:0000:0000:0000:0000/56
Host Europe GmbH blacklist 
2a00:1158:5:900::/56
Host Europe GmbH blacklist 
38.79.142.65/28
UTL-42-36113 blacklist 
38.143.181.1/27
UTL-42-36113 blacklist 
198.204.241.154/29
NOCIX blacklist 
64.182.101.0/24
CORESPACE-DAL blacklist 
64.182.102.0/24
CORESPACE-DAL blacklist 
64.182.103.0/24
CORESPACE-DAL blacklist 
64.182.104.0/24
CORESPACE-DAL blacklist 
64.182.105.0/24
CORESPACE-DAL blacklist 
64.182.106.0/24
CORESPACE-DAL blacklist 
64.182.107.0/24
CORESPACE-DAL blacklist 
67.214.175.64/27
- blacklist 
67.214.171.65/28
- blacklist 
66.85.182.216/29
SSASN2 blacklist 
69.197.184.202/29
WII blacklist 
184.164.135.0/29
SSASN2 blacklist 
47.89.35.126 Alibaba US Technology Co., Ltd. blacklist 
155.94.149.207 PACIFICRACK blacklist 
155.94.149.223 PACIFICRACK blacklist 
155.94.149.23 PACIFICRACK blacklist 
155.94.149.224/29
PACIFICRACK blacklist 
155.94.149.92 PACIFICRACK blacklist 
192.161.59.217 ASN-QUADRANET-GLOBAL blacklist 
204.44.87.130 PACIFICRACK blacklist 
204.44.87.108 PACIFICRACK blacklist 
204.44.87.122 PACIFICRACK blacklist 
204.44.88.144 PACIFICRACK blacklist 
204.44.88.199 PACIFICRACK blacklist 
204.44.88.2 PACIFICRACK blacklist 
204.44.88.20 PACIFICRACK blacklist 
204.44.88.200 PACIFICRACK blacklist 
204.44.88.201 PACIFICRACK blacklist 
204.44.88.216 PACIFICRACK blacklist 
204.44.88.217/29
PACIFICRACK blacklist 
204.44.76.118/27
PACIFICRACK blacklist 
204.44.76.22/27
PACIFICRACK blacklist 
204.27.62.64/28
JOESDATACENTER blacklist 
162.244.82.74 SERVERROOM blacklist 
162.244.82.77 SERVERROOM blacklist 
162.244.82.97 SERVERROOM blacklist 
162.244.82.98 SERVERROOM blacklist 
193.201.168.0/24
dpa Deutsche Presse-Agentur GmbH blacklist 
84.16.227.187/32
Leaseweb Deutschland GmbH blacklist 
94.100.132.73/32
MK Netzdienste GmbH & Co. KG blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: it-seal.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

94.100.132.57

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

hsmx01.antispameurope.com
hsmx03.antispameurope.com

Additionally authorized IPv4 addresses

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

193.201.168.0/24
84.16.227.187/32
94.100.132.73/32

Additional external SPF records

We could find other records authorized in the SPF record

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::/50 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 include:spfd.protection.outlook.com -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::/50
ipv6:
2a01:111:f403:c000::/51
ipv6:
2a01:111:f403:f000::/52
include:spfd.protection.outlook.com
v=spf1 ip4:51.4.72.0/24 ip4:51.5.72.0/24 ip4:51.5.80.0/27 ip4:20.47.149.138/32 ip4:51.4.80.0/27 ip6:2a01:4180:4051:0800::/64 ip6:2a01:4180:4050:0800::/64 ip6:2a01:4180:4051:0400::/64 ip6:2a01:4180:4050:0400::/64 -all
ipv4:
51.4.72.0/24
ipv4:
51.5.72.0/24
ipv4:
51.5.80.0/27
ipv4:
20.47.149.138/32
ipv4:
51.4.80.0/27
ipv6:
2a01:4180:4051:0800::/64
ipv6:
2a01:4180:4050:0800::/64
ipv6:
2a01:4180:4051:0400::/64
ipv6:
2a01:4180:4050:0400::/64
include:mail.zendesk.com
v=spf1 ip4:103.151.192.0/23 ip4:185.12.80.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:216.198.0.0/18 ~all
ipv4:
103.151.192.0/23
ipv4:
185.12.80.0/22
ipv4:
188.172.128.0/20
ipv4:
192.161.144.0/20
ipv4:
216.198.0.0/18
include:spf.hornetsecurity.com
v=spf1 ip4:83.246.65.0/24 ip4:185.140.204.0/22 ip4:94.100.128.0/20 ip4:81.20.94.0/24 ip4:173.45.18.0/24 ip4:52.62.123.207/32 ip4:52.62.108.212/32 ip4:129.232.203.80/28 ip4:209.172.38.64/27 ip4:108.163.133.224/27 ip4:193.135.100.0/27 ip4:199.27.221.76 ip4:216.46.11.238 ip4:216.46.11.244 ip4:199.27.221.81 ip4:199.27.221.82 ip4:52.62.114.130 ip4:52.62.125.178 ip4:92.54.27.0/24 ~all
ipv4:
83.246.65.0/24
ipv4:
185.140.204.0/22
ipv4:
94.100.128.0/20
ipv4:
81.20.94.0/24
ipv4:
173.45.18.0/24
ipv4:
52.62.123.207/32
ipv4:
52.62.108.212/32
ipv4:
129.232.203.80/28
ipv4:
209.172.38.64/27
ipv4:
108.163.133.224/27
ipv4:
193.135.100.0/27
ipv4:
199.27.221.76
ipv4:
216.46.11.238
ipv4:
216.46.11.244
ipv4:
199.27.221.81
ipv4:
199.27.221.82
ipv4:
52.62.114.130
ipv4:
52.62.125.178
ipv4:
92.54.27.0/24
include:ispgateway.de
v=spf1 ip4:92.204.39.0/24 ip4:92.204.37.0/24 ip4:92.204.43.0/24 ip4:92.205.48.0/21 ip4:80.67.16.0/20 ip4:77.91.232.0/21 ip4:62.67.200.0/24 ip4:93.187.232.0/21 ip4:188.93.8.0/21 ip4:185.21.100.0/22 ip4:93.180.152.0/21 ip4:37.200.96.0/21 ip4:176.221.40.0/21 ip4:141.0.16.0/21 ip4:46.252.16.0/20 ip4:109.239.48.0/20 ip4:134.119.228.0/24 ip4:134.119.0.0/17 ip4:134.119.128.0/19 ip4:134.119.160.0/20 ip4:134.119.224.0/19 ip4:92.204.33.0/24 ip4:92.204.55.0/24 ip4:92.204.58.0/24 ip4:134.119.0.0/24 ip4:92.204.236.0/24 ip4:92.204.239.0/24 ip6:2001:1520:a:0:0:0:0:0/56 ip6:2a00:1158:0:300::/56 ip6:2a00:1158:400:1::/120 ip6:2a00:1158:5::/48 ip4:92.205.64.0/24 ip6:2a00:1158:0005:0800:0000:0000:0000:0000/56 ip6:2a00:1158:5:900::/56 ~all
ipv4:
92.204.39.0/24
ipv4:
92.204.37.0/24
ipv4:
92.204.43.0/24
ipv4:
92.205.48.0/21
ipv4:
80.67.16.0/20
ipv4:
77.91.232.0/21
ipv4:
62.67.200.0/24
ipv4:
93.187.232.0/21
ipv4:
188.93.8.0/21
ipv4:
185.21.100.0/22
ipv4:
93.180.152.0/21
ipv4:
37.200.96.0/21
ipv4:
176.221.40.0/21
ipv4:
141.0.16.0/21
ipv4:
46.252.16.0/20
ipv4:
109.239.48.0/20
ipv4:
134.119.228.0/24
ipv4:
134.119.0.0/17
ipv4:
134.119.128.0/19
ipv4:
134.119.160.0/20
ipv4:
134.119.224.0/19
ipv4:
92.204.33.0/24
ipv4:
92.204.55.0/24
ipv4:
92.204.58.0/24
ipv4:
134.119.0.0/24
ipv4:
92.204.236.0/24
ipv4:
92.204.239.0/24
ipv4:
92.205.64.0/24
ipv6:
2001:1520:a:0:0:0:0:0/56
ipv6:
2a00:1158:0:300::/56
ipv6:
2a00:1158:400:1::/120
ipv6:
2a00:1158:5::/48
ipv6:
2a00:1158:0005:0800:0000:0000:0000:0000/56
ipv6:
2a00:1158:5:900::/56
include:dnsexit.com
v=spf1 ip4:38.79.142.65/28 ip4:38.143.181.1/27 ip4:198.204.241.154/29 ip4:64.182.101.0/24 ip4:64.182.102.0/24 ip4:64.182.103.0/24 ip4:64.182.104.0/24 ip4:64.182.105.0/24 ip4:64.182.106.0/24 ip4:64.182.107.0/24 ip4:67.214.175.64/27 ip4:67.214.171.65/28 ip4:66.85.182.216/29 ip4:69.197.184.202/29 ip4:184.164.135.0/29 ip4:47.89.35.126 ip4:155.94.149.207 ip4:155.94.149.223 ip4:155.94.149.23 ip4:155.94.149.224/29 ip4:155.94.149.92 ip4:192.161.59.217 ip4:204.44.87.130 ip4:204.44.87.108 ip4:204.44.87.122 ip4:204.44.88.144 ip4:204.44.88.199 ip4:204.44.88.2 ip4:204.44.88.20 ip4:204.44.88.200 ip4:204.44.88.201 ip4:204.44.88.216 ip4:204.44.88.217/29 ip4:204.44.76.118/27 ip4:204.44.76.22/27 ip4:204.27.62.64/28 ip4:162.244.82.74 ip4:162.244.82.77 ip4:162.244.82.97 ip4:162.244.82.98 -all
ipv4:
38.79.142.65/28
ipv4:
38.143.181.1/27
ipv4:
198.204.241.154/29
ipv4:
64.182.101.0/24
ipv4:
64.182.102.0/24
ipv4:
64.182.103.0/24
ipv4:
64.182.104.0/24
ipv4:
64.182.105.0/24
ipv4:
64.182.106.0/24
ipv4:
64.182.107.0/24
ipv4:
67.214.175.64/27
ipv4:
67.214.171.65/28
ipv4:
66.85.182.216/29
ipv4:
69.197.184.202/29
ipv4:
184.164.135.0/29
ipv4:
47.89.35.126
ipv4:
155.94.149.207
ipv4:
155.94.149.223
ipv4:
155.94.149.23
ipv4:
155.94.149.224/29
ipv4:
155.94.149.92
ipv4:
192.161.59.217
ipv4:
204.44.87.130
ipv4:
204.44.87.108
ipv4:
204.44.87.122
ipv4:
204.44.88.144
ipv4:
204.44.88.199
ipv4:
204.44.88.2
ipv4:
204.44.88.20
ipv4:
204.44.88.200
ipv4:
204.44.88.201
ipv4:
204.44.88.216
ipv4:
204.44.88.217/29
ipv4:
204.44.76.118/27
ipv4:
204.44.76.22/27
ipv4:
204.27.62.64/28
ipv4:
162.244.82.74
ipv4:
162.244.82.77
ipv4:
162.244.82.97
ipv4:
162.244.82.98
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)

Unknown mechanisms

Unknown mechanisms were found in the SPF record


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

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:

94.100.132.57

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