List Quality Check

You have no lists. To create a list click here

Select Page
Icon

Sender Score

Results for IP address
12.34.56.789

Sending Domain Information

MX Record   
SPF Record   

SSL Information

SSL Certificate
Owner
www.knihydobrovsky.cz
Issued by
R12
Valid Until
05/06/2026
Sending IPs
IP Address    Hostname Volume    Sender Score   
40.107.130.122 mail-francesouthazon11021122.outbound.protection.outlook.com. VERY HIGH 18
40.107.130.138 mail-francesouthazon11021138.outbound.protection.outlook.com. VERY HIGH 19
40.107.159.97 mail-norwayeastazon11023097.outbound.protection.outlook.com. VERY HIGH 14
40.107.159.115 mail-norwayeastazon11023115.outbound.protection.outlook.com. VERY HIGH 11
40.107.159.132 mail-norwayeastazon11023132.outbound.protection.outlook.com. VERY HIGH 8
40.107.162.83 mail-francecentralazon11023083.outbound.protection.outlook.com. VERY HIGH 4
40.107.162.101 mail-francecentralazon11023101.outbound.protection.outlook.com. VERY HIGH 9
40.107.162.126 mail-francecentralazon11023126.outbound.protection.outlook.com. VERY HIGH 13
46.28.105.100 w-smtp-out-4.wedos.net. VERY HIGH 99
46.28.105.101 w-smtp-out-5.wedos.net. VERY HIGH 99
46.255.225.202 gmmr-1.centrum.cz. VERY HIGH 96
46.255.225.205 gmmr-3.centrum.cz. VERY HIGH 81
46.255.227.203 gmmr-2.centrum.cz. VERY HIGH 87
46.255.227.205 gmmr-4.centrum.cz. VERY HIGH 80
52.101.65.100 mail-northeuropeazon11021100.outbound.protection.outlook.com. VERY HIGH 9
52.101.65.120 mail-northeuropeazon11021120.outbound.protection.outlook.com. VERY HIGH 12
52.101.65.131 mail-northeuropeazon11021131.outbound.protection.outlook.com. VERY HIGH 11
52.101.65.142 mail-northeuropeazon11021142.outbound.protection.outlook.com. VERY HIGH 18
52.101.66.112 mail-northeuropeazon11022112.outbound.protection.outlook.com. VERY HIGH 5
52.101.69.78 mail-westeuropeazon11020078.outbound.protection.outlook.com. VERY HIGH 9
52.101.69.99 mail-westeuropeazon11020099.outbound.protection.outlook.com. VERY HIGH 19
52.101.69.110 mail-westeuropeazon11020110.outbound.protection.outlook.com. VERY HIGH 7
52.101.69.114 mail-westeuropeazon11020114.outbound.protection.outlook.com. VERY HIGH 7
52.101.70.72 mail-westeuropeazon11021072.outbound.protection.outlook.com. VERY HIGH 13
52.101.72.110 mail-westeuropeazon11023110.outbound.protection.outlook.com. VERY HIGH 6
52.101.83.124 mail-swedencentralazon11023124.outbound.protection.outlook.com. VERY HIGH 7
52.101.84.93 mail-northeuropeazon11020093.outbound.protection.outlook.com. VERY HIGH 6
78.156.32.42 ir.rete.cz. HIGH 99
82.208.7.9 mail-1.nethost.cz. VERY HIGH 95
83.167.234.70 d418-101.masterinter.net. VERY HIGH 99
83.167.244.132 smtp-out-01.svethostingu.cz. VERY HIGH 75
89.187.131.49 mail8.isol.cz. HIGH 99
147.231.150.12 mail-gw1.img.cas.cz. HIGH 88
185.129.138.111 mxavas-out-1.forpsi.com. VERY HIGH 99
185.129.138.112 mxavas-out-2.forpsi.com. VERY HIGH 99
185.129.138.113 mxavas-out-3.forpsi.com. VERY HIGH 99
185.250.102.102 mail-31.cortex.cz. VERY HIGH 99
185.250.102.103 mail-32.cortex.cz. VERY HIGH 99
185.250.102.104 mail-33.cortex.cz. VERY HIGH 99
185.250.102.105 mail-34.cortex.cz. VERY HIGH 99
185.250.102.106 mail-35.cortex.cz. VERY HIGH 99
185.250.102.107 mail-36.cortex.cz. VERY HIGH 99
185.250.102.108 mail-37.cortex.cz. VERY HIGH 99
185.250.102.109 mail-38.cortex.cz. VERY HIGH 99
193.86.118.14 gw.kostecka.net. HIGH 99
193.165.146.122 hosting.itconsulting.cz. HIGH 97
195.181.249.35 srs1.nameserver.sk. VERY HIGH 99
195.181.249.36 srs2.nameserver.sk. VERY HIGH 83
195.181.249.37 srs3.nameserver.sk. VERY HIGH 83
198.2.128.15 mail128-15.atl41.mandrillapp.com. VERY HIGH 99
198.2.132.17 mail132-17.atl131.mandrillapp.com. VERY HIGH 99
198.2.136.15 mail136-15.atl41.mandrillapp.com. VERY HIGH 99
198.2.136.18 mail136-18.atl41.mandrillapp.com. VERY HIGH 97
198.2.137.15 mail137-15.atl71.mandrillapp.com. VERY HIGH 99
198.2.179.30 mail179-30.suw41.mandrillapp.com. VERY HIGH 97
198.2.179.47 mail179-47.suw41.mandrillapp.com. VERY HIGH 99
198.2.180.4 mail180-4.suw31.mandrillapp.com. VERY HIGH 99
198.2.187.9 mail187-9.suw11.mandrillapp.com. VERY HIGH 99
198.2.187.31 mail187-31.suw11.mandrillapp.com. VERY HIGH 98
205.201.136.1 mail1.us4.mandrillapp.com. VERY HIGH 96
205.201.139.7 mail7.wdc04.mandrillapp.com. VERY HIGH 99
217.11.236.90 smtp.discretepost.com. VERY HIGH 69
Related Sending Domains

The path to reputation greatness.

See if you’re being blocked.

Is your reputation suffering because you’re on a blocklist? Use our free tool to investigate.

Learn from star senders

Hear real sender stories on the Email After Hours podcast.

Keep your lists clean

Upload your list to our list quality checks tool to see if your contacts are legit.

Talk to an email expert.

We’re the experts in deliverability and driving maximum results from your email marketing. Let’s chat and find out how you can improve your sender reputation and raise your revenue.