IPLIST.NET - is4sinc.mail.protection.office365.us
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is4sinc.mail.protection.office365.us checked at 2025-10-09T17:33:29.373Z 198ms 30/30/30 100% R:9is4sinc.mail.protection.office365.us
| A | 23.103.199.138🇺🇸 Microsoft | ||||||
| PTR | mail-bn3usg020138.inbound.protection.outlook.com | ||||||
| A | 23.103.199.170🇺🇸 Microsoft | ||||||
| PTR | mail-cy1usg020170.inbound.protection.outlook.com | ||||||
mail.protection.office365.us
| NS | ns1-proddns.glbdns.protection.office365.us | ||||||
| NS | ns2-proddns.glbdns.protection.office365.us | ||||||
MX for
AI analysis
is4sinc.mail.protection.office365.us serves as the mail server for is4s.com, is4s.net and aspn.us.
is4sinc.mail.protection.office365.us points to two IP numbers: 23.103.199.138 and 23.103.199.170.
Other host names such as scientificsol.mail.protection.office365.us, apexspace-com.mail.protection.office365.us, aisolutions1.mail.protection.office365.us, idrusa.mail.protection.office365.us and phoenixopsgroup.mail.protection.office365.us share IPs with is4sinc.mail.protection.office365.us.
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