SPF Check:
tc.tc

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 tc.tc.
The SPF record for tc.tc 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, 125 IP address(es) were authorized by the SPF record to send emails.

The SPF record analysis was performed on 15.06.2024 at 18:50:20 clock.

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

Nameserverset:
ns1.d-zone.ca
ns2.d-zone.ca
Determined SPF record:
Legitimated IP addresses:
IP Provider / ASN DNSBL-Check
12.47.172.3 CVH-NETBLK-1 blacklist 
12.47.172.42 CVH-NETBLK-1 blacklist 
104.245.209.192/26
SERVERCENTRAL blacklist 
117.20.43.11/32
PacketFabric Hong Kong Limited blacklist 
135.84.81.0/24
ZOHO-AS blacklist 
135.84.83.0/24
ZOHO-AS blacklist 
136.143.160.0/24
ZOHO-AS blacklist 
136.143.161.0/24
ZOHO-AS blacklist 
147.160.158.0/24
SERVERCENTRAL blacklist 
147.160.167.0/26
AMAZON-AES blacklist 
148.105.8.0/21
THEROCKETSCIENCEGROUP blacklist 
165.173.128.0/24
ZOHO-AS blacklist 
173.251.18.10 CABLE-NET-1 blacklist 
198.2.128.0/18
THEROCKETSCIENCEGROUP blacklist 
198.235.60.176 TRANSCONTINENTAL-INC blacklist 
198.235.61.178 TRANSCONTINENTAL-INC blacklist 
198.235.61.227 TRANSCONTINENTAL-INC blacklist 
198.235.61.228 TRANSCONTINENTAL-INC blacklist 
199.67.64.0/24
ZOHO-AS blacklist 
23.21.109.197 AMAZON-AES blacklist 
23.21.109.212 AMAZON-AES blacklist 
23.249.209.31 AMAZON-02 blacklist 
205.201.128.0/20
THEROCKETSCIENCEGROUP blacklist 
34.68.104.193 GOOGLE-CLOUD-PLATFORM blacklist 
34.74.57.127 GOOGLE-CLOUD-PLATFORM blacklist 
35.188.64.218 GOOGLE-CLOUD-PLATFORM blacklist 
35.202.125.231 GOOGLE-CLOUD-PLATFORM blacklist 
35.231.189.43 GOOGLE-CLOUD-PLATFORM blacklist 
35.231.237.213 GOOGLE-CLOUD-PLATFORM blacklist 
40.123.53.99 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
40.123.53.216 MICROSOFT-CORP-MSN-AS-BLOCK blacklist 
50.100.15.145 Equinix (EMEA) Acquisition Enterprises B.V. blacklist 
50.31.156.96/27
SERVERCENTRAL blacklist 
50.31.205.0/24
SERVERCENTRAL blacklist 
54.240.124.234 AMAZON-AES blacklist 
54.240.124.235 AMAZON-AES blacklist 
67.231.149.106 PROOFPOINT-ASN-US-WEST blacklist 
67.231.151.1 PROOFPOINT-ASN-US-WEST blacklist 
67.231.157.102 PROOFPOINT-ASN-US-EAST blacklist 
67.231.158.130 PROOFPOINT-ASN-US-WEST blacklist 
69.28.229.252 COGECO-PEER1 blacklist 
74.91.88.0/24
MOZGROUP-SMTP blacklist 
35.182.24.117 AMAZON-02 blacklist 
35.183.150.172 AMAZON-02 blacklist 
35.183.217.192 AMAZON-02 blacklist 
35.183.54.5 AMAZON-02 blacklist 
199.255.192.0/22
AMAZON-02 blacklist 
199.127.232.0/22
AMAZON-02 blacklist 
54.240.0.0/18
AMAZON-02 blacklist 
69.169.224.0/20
AMAZON-02 blacklist 
23.249.208.0/20
AMAZON-02 blacklist 
23.251.224.0/19
AMAZON-02 blacklist 
76.223.176.0/20
AMAZON-02 blacklist 
54.240.64.0/19
AMAZON-AES blacklist 
54.240.96.0/19
AMAZON-02 blacklist 
76.223.128.0/19
AMAZON-02 blacklist 
216.221.160.0/19
AMAZON-02 blacklist 
206.55.144.0/20
- blacklist 
167.89.0.0/17
SENDGRID blacklist 
208.117.48.0/20
SENDGRID blacklist 
50.31.32.0/19
SENDGRID blacklist 
198.37.144.0/20
SENDGRID blacklist 
198.21.0.0/21
SENDGRID blacklist 
192.254.112.0/20
SENDGRID blacklist 
168.245.0.0/17
SENDGRID blacklist 
149.72.0.0/16
AMAZON-AES blacklist 
159.183.0.0/16
SENDGRID blacklist 
223.165.113.0/24
SENDGRID blacklist 
223.165.115.0/24
SENDGRID blacklist 
223.165.118.0/23
SENDGRID blacklist 
223.165.120.0/23
SENDGRID 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 
136.143.188.0/24
ZOHO-AS blacklist 
136.143.184.0/24
ZOHO-AS blacklist 
135.84.80.0/24
ZOHO-AS blacklist 
135.84.82.0/24
ZOHO-AS blacklist 
8.39.54.0/23
ZOHO-AS blacklist 
204.141.32.0/23
ZOHO-AS blacklist 
136.143.182.0/23
ZOHO-AS blacklist 
204.141.42.0/23
ZOHO-AS blacklist 
8.40.222.0/23
LEVEL3 blacklist 
65.154.166.0/24
ZOHO-AS blacklist 
199.67.84.0/24
ZOHO-AS blacklist 
199.67.86.0/24
ZOHO-AS blacklist 
169.148.129.0/24
ZOHO Corporation B.V blacklist 
169.148.131.0/24
ZOHO Corporation B.V blacklist 
121.244.91.48/32
TATA Communications formerly VSNL is Leading ISP blacklist 
199.67.88.0/24
ZOHO Corporation B.V blacklist 
122.15.156.182/32
Vodafone Idea Ltd blacklist 
169.148.144.0/25
Zoho Corporation Pvt. Ltd blacklist 
199.34.22.36/32
CtrlS blacklist 
199.67.80.2/32
ZOHO Corporation B.V blacklist 
169.148.142.10/32
Zoho Corporation Pvt. Ltd blacklist 
136.143.190.0/23
ZOHO-AS blacklist 
199.67.82.2/32
ZOHO Corporation B.V blacklist 
136.143.178.49/32
ZOHO-AS blacklist 
169.148.144.10/32
Zoho Corporation Pvt. Ltd blacklist 
199.67.82.20/32
ZOHO Corporation B.V blacklist 
199.67.80.20/32
ZOHO Corporation B.V blacklist 
198.245.81.0/24
SALESFORCE blacklist 
136.147.176.0/24
SALESFORCE blacklist 
13.111.0.0/16
SALESFORCE blacklist 
136.147.182.0/24
SALESFORCE blacklist 
136.147.135.0/24
SALESFORCE blacklist 
199.122.123.0/24
SALESFORCE blacklist 
199.15.212.0/22
OMNITURE blacklist 
72.3.185.0/24
RMH-14 blacklist 
72.32.154.0/24
RMH-14 blacklist 
72.32.217.0/24
RMH-14 blacklist 
72.32.243.0/24
RMH-14 blacklist 
94.236.119.0/26
Rackspace Ltd. blacklist 
37.188.97.188/32
Rackspace Ltd. blacklist 
185.28.196.0/22
Rackspace Ltd. blacklist 
192.28.128.0/18
LM-CORP blacklist 
103.237.104.0/22
MARKETO blacklist 
130.248.172.0/24
OMNITURE blacklist 
130.248.173.0/24
OMNITURE blacklist 
SPF-Syntax Check:
Analysis result of the SPF record for the domain: tc.tc

SPF record available?

We found an SPF record for the domain.

v=spf1

Additionally authorized IPv4 addresses

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

12.47.172.3
12.47.172.42
104.245.209.192/26
117.20.43.11/32
135.84.81.0/24
135.84.83.0/24
136.143.160.0/24
136.143.161.0/24
147.160.158.0/24
147.160.167.0/26
148.105.8.0/21
165.173.128.0/24
173.251.18.10
198.2.128.0/18
198.235.60.176
198.235.61.178
198.235.61.227
198.235.61.228
199.67.64.0/24
23.21.109.197
23.21.109.212
23.249.209.31
205.201.128.0/20
34.68.104.193
34.74.57.127
35.188.64.218
35.202.125.231
35.231.189.43
35.231.237.213
40.123.53.99
40.123.53.216
50.100.15.145
50.31.156.96/27
50.31.205.0/24
54.240.124.234
54.240.124.235
67.231.149.106
67.231.151.1
67.231.157.102
67.231.158.130
69.28.229.252
74.91.88.0/24
35.182.24.117
35.183.150.172
35.183.217.192
35.183.54.5

Additional external SPF records

We could find other records authorized in the SPF record

include:amazonses.com
v=spf1 ip4:199.255.192.0/22 ip4:199.127.232.0/22 ip4:54.240.0.0/18 ip4:69.169.224.0/20 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:76.223.176.0/20 ip4:54.240.64.0/19 ip4:54.240.96.0/19 ip4:76.223.128.0/19 ip4:216.221.160.0/19 ip4:206.55.144.0/20 -all
ipv4:
199.255.192.0/22
ipv4:
199.127.232.0/22
ipv4:
54.240.0.0/18
ipv4:
69.169.224.0/20
ipv4:
23.249.208.0/20
ipv4:
23.251.224.0/19
ipv4:
76.223.176.0/20
ipv4:
54.240.64.0/19
ipv4:
54.240.96.0/19
ipv4:
76.223.128.0/19
ipv4:
216.221.160.0/19
ipv4:
206.55.144.0/20
include:sendgrid.net
v=spf1 ip4:167.89.0.0/17 ip4:208.117.48.0/20 ip4:50.31.32.0/19 ip4:198.37.144.0/20 ip4:198.21.0.0/21 ip4:192.254.112.0/20 ip4:168.245.0.0/17 ip4:149.72.0.0/16 ip4:159.183.0.0/16 include:ab.sendgrid.net ~all
ipv4:
167.89.0.0/17
ipv4:
208.117.48.0/20
ipv4:
50.31.32.0/19
ipv4:
198.37.144.0/20
ipv4:
198.21.0.0/21
ipv4:
192.254.112.0/20
ipv4:
168.245.0.0/17
ipv4:
149.72.0.0/16
ipv4:
159.183.0.0/16
include:ab.sendgrid.net
v=spf1 ip4:223.165.113.0/24 ip4:223.165.115.0/24 ip4:223.165.118.0/23 ip4:223.165.120.0/23 ~all
ipv4:
223.165.113.0/24
ipv4:
223.165.115.0/24
ipv4:
223.165.118.0/23
ipv4:
223.165.120.0/23
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.zoho.com
v=spf1 ip4:136.143.188.0/24 ip4:136.143.184.0/24 ip4:135.84.80.0/24 ip4:135.84.82.0/24 ip4:8.39.54.0/23 ip4:204.141.32.0/23 ip4:136.143.182.0/23 ip4:204.141.42.0/23 ip4:8.40.222.0/23 ip4:65.154.166.0/24 ip4:199.67.84.0/24 ip4:199.67.86.0/24 ip4:169.148.129.0/24 ip4:169.148.131.0/24 ip4:121.244.91.48/32 ip4:199.67.88.0/24 ip4:122.15.156.182/32 ip4:169.148.144.0/25 ip4:199.34.22.36/32 ip4:199.67.80.2/32 ip4:169.148.142.10/32 ip4:136.143.190.0/23 ip4:199.67.82.2/32 ip4:136.143.178.49/32 ip4:169.148.144.10/32 ip4:199.67.82.20/32 ip4:199.67.80.20/32 -all
ipv4:
136.143.188.0/24
ipv4:
136.143.184.0/24
ipv4:
135.84.80.0/24
ipv4:
135.84.82.0/24
ipv4:
8.39.54.0/23
ipv4:
204.141.32.0/23
ipv4:
136.143.182.0/23
ipv4:
204.141.42.0/23
ipv4:
8.40.222.0/23
ipv4:
65.154.166.0/24
ipv4:
199.67.84.0/24
ipv4:
199.67.86.0/24
ipv4:
169.148.129.0/24
ipv4:
169.148.131.0/24
ipv4:
121.244.91.48/32
ipv4:
199.67.88.0/24
ipv4:
122.15.156.182/32
ipv4:
169.148.144.0/25
ipv4:
199.34.22.36/32
ipv4:
199.67.80.2/32
ipv4:
169.148.142.10/32
ipv4:
136.143.190.0/23
ipv4:
199.67.82.2/32
ipv4:
136.143.178.49/32
ipv4:
169.148.144.10/32
ipv4:
199.67.82.20/32
ipv4:
199.67.80.20/32
include:_spf.salesforce.com
v=spf1 exists:%{i}._spf.mta.salesforce.com -all
include:aspmx.pardot.com
v=spf1 include:et._spf.pardot.com -all
include:et._spf.pardot.com
v=spf1 ip4:198.245.81.0/24 ip4:136.147.176.0/24 ip4:13.111.0.0/16 ip4:136.147.182.0/24 ip4:136.147.135.0/24 ip4:199.122.123.0/24 -all
ipv4:
198.245.81.0/24
ipv4:
136.147.176.0/24
ipv4:
13.111.0.0/16
ipv4:
136.147.182.0/24
ipv4:
136.147.135.0/24
ipv4:
199.122.123.0/24
include:mktomail.com
v=spf1 ip4:199.15.212.0/22 ip4:72.3.185.0/24 ip4:72.32.154.0/24 ip4:72.32.217.0/24 ip4:72.32.243.0/24 ip4:94.236.119.0/26 ip4:37.188.97.188/32 ip4:185.28.196.0/22 ip4:192.28.128.0/18 ip4:103.237.104.0/22 ip4:130.248.172.0/24 ip4:130.248.173.0/24 ~all
ipv4:
199.15.212.0/22
ipv4:
72.3.185.0/24
ipv4:
72.32.154.0/24
ipv4:
72.32.217.0/24
ipv4:
72.32.243.0/24
ipv4:
94.236.119.0/26
ipv4:
37.188.97.188/32
ipv4:
185.28.196.0/22
ipv4:
192.28.128.0/18
ipv4:
103.237.104.0/22
ipv4:
130.248.172.0/24
ipv4:
130.248.173.0/24

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 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:

camden-www01.evolix.net

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