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
rb.cz
Issued by
DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid Until
04/08/2024
Sending IPs
IP Address    Hostname Volume    Sender Score   
45.13.137.21 m1-out-mua-12.websupport.sk. VERY HIGH 76
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
46.167.216.246 mail.smarttrading.cz. MODERATE 99
46.234.101.17 apo08.vas-server.cz. MODERATE 98
46.234.126.242 rop07.vas-server.cz. MODERATE 100
46.255.225.205 gmmr-3.centrum.cz. VERY HIGH 15
46.255.227.203 gmmr-2.centrum.cz. VERY HIGH 65
46.255.227.205 gmmr-4.centrum.cz. VERY HIGH 8
62.168.6.253 smtp2.rb.cz. VERY HIGH 99
62.168.7.193 net02a.rb.cz. VERY HIGH 99
77.93.211.222 p1.banan.cz. VERY HIGH 88
78.24.14.60 virtua-ng.vshosting.cz. VERY HIGH 99
78.24.15.95 smtp.shoptet.cz. VERY HIGH 99
78.108.103.113 lucifer.praha12.net. MODERATE 98
80.188.119.234 mail.orgrez.cz. HIGH 99
81.0.226.122 mta-99b.webnode.com. VERY HIGH 97
81.0.235.79 mail.mmreality.cz. VERY HIGH 74
81.0.235.84 ivanek-84.tojeono.cz. VERY HIGH 99
81.31.33.204 mail1d717.masterinter.net. VERY HIGH 96
81.91.84.215 m108-2.server4u.cz. VERY HIGH 99
81.91.87.85 smtp5.web4u.cz. VERY HIGH 86
81.91.87.93 smtp13.web4u.cz. VERY HIGH 99
81.91.87.94 smtp14.web4u.cz. HIGH 93
81.95.97.80 seznamrelay.smtp.cz. VERY HIGH 99
81.95.97.108 lord.smtp.cz. HIGH 99
81.95.105.137 antirelay07.smtp.cz. VERY HIGH 72
81.95.105.143 antirelay13.smtp.cz. VERY HIGH 52
81.95.105.146 antirelay16.smtp.cz. VERY HIGH 97
81.95.105.167 antirelay37.smtp.cz. VERY HIGH 78
81.95.105.178 antirelay48.smtp.cz. VERY HIGH 99
82.99.163.197 beda.rb.cz. VERY HIGH 99
82.99.172.2 email.zfpakademie.cz. VERY HIGH 97
82.208.7.108 server1.4shop.cz. VERY HIGH 80
83.167.255.136 mail7.aceit.cz. VERY HIGH 88
84.19.64.3 mail.eri.cz. HIGH 98
85.93.165.22 smtp.profiwh.com. VERY HIGH 91
87.236.194.142 mailsvrred.digitree.cz. HIGH 99
88.86.117.164 mail.realhost.cz. VERY HIGH 94
88.146.53.147 webmail.kapitol.cz. VERY HIGH 99
88.146.207.84 email.messenger.cz. HIGH 99
89.111.91.4 mail.volduchy.cz. MODERATE 99
89.185.254.34 mx1.golemos.com. VERY HIGH 95
90.183.125.21 smtp.plus4u.net. VERY HIGH 94
91.227.134.131 venda.one.cz. VERY HIGH 98
91.241.8.221 posta.smsfinance.cz. VERY HIGH 99
93.185.99.200 msa-alt.vshosting.cloud. VERY HIGH 78
95.80.214.201 secure.abzone.cz. VERY HIGH 98
95.129.100.50 mail.okgroup.cz. VERY HIGH 99
95.168.196.37 mail.superhosting.cz. HIGH 98
109.81.187.31 karolina.naveta.cz. MODERATE 99
136.143.188.75 sender4-of-f75.zoho.com. VERY HIGH 99
145.239.87.8 smtp-waw1.remote-control-world.eu. MODERATE 99
147.32.160.28 smtp1-out.fsid.cvut.cz. VERY HIGH 91
147.251.49.7 arethusa2.fi.muni.cz. VERY HIGH 90
160.218.169.68 mailer2.quick.cz. VERY HIGH 98
178.238.42.194 mail4.schindler-sys.cz. HIGH 99
178.251.187.8 jaguar.blueboard.cz. VERY HIGH 81
185.28.193.37 mail.gransy.cz. VERY HIGH 80
185.64.219.23 mail-smtp2.srv.wz.cz. HIGH 99
185.66.36.222 mail.gigaserver.cz. VERY HIGH 74
185.129.138.111 mxavas-out-1.forpsi.com. VERY HIGH 96
185.129.138.112 mxavas-out-2.forpsi.com. VERY HIGH 96
185.129.138.113 mxavas-out-3.forpsi.com. VERY HIGH 86
193.86.77.251 mail.brabec-vzt.cz. HIGH 98
193.86.200.120 subwoofer.cz. HIGH 99
193.165.171.49 mail03.j.jklient.cz. HIGH 92
194.8.253.34 pampeliska.neoprojekt.cz. HIGH 97
194.228.41.112 backmx.iol.cz. VERY HIGH 99
194.228.62.41 smtp1.mafra.cz. VERY HIGH 99
194.228.62.44 smtp4.mafra.cz. VERY HIGH 99
195.113.206.225 tc225.cmi.cz. HIGH 97
195.181.249.35 srs1.nameserver.sk. VERY HIGH 95
195.181.249.36 srs2.nameserver.sk. VERY HIGH 83
195.181.249.37 srs3.nameserver.sk. VERY HIGH 97
212.35.205.138 husse-mail.nodebee.net. HIGH 98
217.11.236.90 smtp.discretepost.com. VERY HIGH 58
217.16.183.90 mail.ishost.eu. HIGH 97
217.16.187.43 smtp2.savana.cz. VERY HIGH 82
217.198.120.37 smtp-forwards-2.zoner.com. HIGH 97
217.198.120.43 smtp-forwards-1.zoner.com. VERY HIGH 84

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.

Assess

Learn

Act