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
*.isn.com
Issued by
GeoTrust TLS RSA CA G1
Valid Until
07/06/2026
Sending IPs
IP Address    Hostname Volume    Sender Score   
3.12.69.3 smtp-048f0731fa8bb0451.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 97
3.12.125.181 smtp-0a087de943cabb88e.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
3.12.233.79 smtp-03e7a385b3cc8aa8a.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 74
3.15.88.129 smtp-09620a1e2fa098d42.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 85
3.15.101.154 smtp-0f9d9ffcca136bda7.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 86
3.18.23.102 smtp-0e67926779f85ec45.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
3.19.5.165 smtp-06094ed8c7f30fa6d.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 80
3.22.122.217 smtp-0a7505deea7ebc37d.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
3.22.215.227 smtp-04e9955790e622b23.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 78
3.22.218.33 smtp-0d8928cdf72df48e7.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
3.23.36.9 smtp-0fd475a12e52637f4.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 80
3.128.55.20 smtp-0fe6487b28a01ab6a.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
3.131.103.121 smtp-0fbbb11613367f9a4.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
3.134.43.17 smtp-0edf187bcee92e866.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 89
3.135.73.6 smtp-073d7862604225802.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
3.136.67.127 smtp-0a08daacb03cfb8fc.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
3.140.235.0 smtp-06bf0dd473ae928e7.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 96
3.143.75.149 smtp-09f22c47371a8775b.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
13.58.188.62 smtp-06ecb1fd7f10390fd.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 80
13.58.223.169 smtp-09617f83ba5bd5b87.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
13.59.19.60 smtp-07946134aad5d5287.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 82
14.127.64.175 NXDOMAIN MODERATE 4
18.116.106.89 smtp-074c4551ac9436a46.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
18.116.222.190 smtp-0ff4b18b412ab193d.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
18.117.31.220 smtp-053a43a2c9ecc9b54.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
18.189.62.20 smtp-0d6793730ea020fa2.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
18.189.138.59 smtp-097025fe519d34b87.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
18.217.12.170 smtp-0770106114d65923f.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
18.217.163.190 smtp-0edf7c5e900306de4.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 80
18.220.50.29 smtp-0a0a30bc8dc082e2e.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
18.220.55.150 smtp-0c5d731565a68bb3f.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
18.222.52.31 smtp-09587c15bc384acdc.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 90
52.14.93.5 smtp-09b8520736e74aadf.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 85
52.15.197.148 smtp-0b49e7135071fcaf5.core1.sfdc-8tgtt5.mta.salesforce.com. VERY HIGH 81
52.101.46.60 mail-westus2azon11010060.outbound.protection.outlook.com. HIGH 95
66.96.184.1 bosmailout01.eigbox.net. VERY HIGH 98
66.96.184.2 bosmailout02.eigbox.net. VERY HIGH 97
66.96.184.3 bosmailout03.eigbox.net. VERY HIGH 97
74.208.4.197 mout.perfora.net. VERY HIGH 71
98.97.253.47 smtp-253-47.pdx1.qemailserver.com. VERY HIGH 97
98.97.253.48 smtp-253-48.pdx1.qemailserver.com. VERY HIGH 99
98.97.253.49 smtp-253-49.pdx1.qemailserver.com. VERY HIGH 96
98.97.253.51 smtp-253-51.pdx1.qemailserver.com. VERY HIGH 99
98.97.253.52 smtp-253-52.pdx1.qemailserver.com. VERY HIGH 97
98.97.253.53 smtp-253-53.pdx1.qemailserver.com. VERY HIGH 90
98.97.253.54 smtp-253-54.pdx1.qemailserver.com. VERY HIGH 99
98.97.253.55 smtp-253-55.pdx1.qemailserver.com. VERY HIGH 82
98.97.253.56 smtp-253-56.pdx1.qemailserver.com. VERY HIGH 96
98.97.253.57 smtp-253-57.pdx1.qemailserver.com. VERY HIGH 97
98.97.253.58 smtp-253-58.pdx1.qemailserver.com. VERY HIGH 90
98.97.253.59 smtp-253-59.pdx1.qemailserver.com. VERY HIGH 99
98.97.253.61 smtp-253-61.pdx1.qemailserver.com. VERY HIGH 99
98.97.253.62 smtp-253-62.pdx1.qemailserver.com. VERY HIGH 97
98.97.253.63 smtp-253-63.pdx1.qemailserver.com. VERY HIGH 87
108.179.149.82 4f2oro.bf03.hubspotemail.net. VERY HIGH 95
108.179.149.85 4f2orr.bf03.hubspotemail.net. VERY HIGH 98
108.179.149.86 4f2ors.bf03.hubspotemail.net. VERY HIGH 98
108.179.149.87 4f2ort.bf03.hubspotemail.net. VERY HIGH 98
143.244.90.2 bd77gc0.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.5 bd77gc3.bf03.hubspotemail.net. VERY HIGH 94
143.244.90.7 bd77gc5.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.10 bd77gc8.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.18 bd77gdg.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.21 bd77gdj.bf03.hubspotemail.net. VERY HIGH 98
143.244.90.40 bd77gd2.bf03.hubspotemail.net. VERY HIGH 90
143.244.90.78 bd77ge4.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.79 bd77ge5.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.82 bd77ge8.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.96 bd77gfm.bf03.hubspotemail.net. VERY HIGH 98
143.244.90.102 bd77gfs.bf03.hubspotemail.net. VERY HIGH 95
143.244.90.105 bd77gfv.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.112 bd77gf2.bf03.hubspotemail.net. VERY HIGH 98
143.244.90.117 bd77gf7.bf03.hubspotemail.net. VERY HIGH 96
143.244.90.124 bd77gge.bf03.hubspotemail.net. VERY HIGH 97
143.244.90.125 bd77ggf.bf03.hubspotemail.net. VERY HIGH 98
159.183.11.112 o4.ptr5451.isn.com. MODERATE 99
159.183.82.99 o5.ptr6278.isn.com. MODERATE 99
159.183.164.54 wfbtxqps.outbound-mail.sendgrid.net. VERY HIGH 99
159.183.202.132 o3.ptr2096.o3.sg.isn.com. MODERATE 99
168.245.5.220 o2.sg.isn.com. MODERATE 99
173.219.72.11 cuda.dewebworks.net. HIGH 99
173.219.72.206 cuda2.dewebworks.net. HIGH 98
205.220.161.124 mx0a-003e9401.pphosted.com. MODERATE 99
205.220.173.124 mx0b-003e9401.pphosted.com. MODERATE 99

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.