The names of all the IP addresses in 52.101.42.0/24
52.101.42.0	mail-mw2pr00cu00200.inbound.protection.outlook.com.
52.101.42.4	mail-co1pr03cu00104.inbound.protection.outlook.com.
52.101.42.6	mail-mw2pr02cu00306.inbound.protection.outlook.com.
52.101.42.9	mail-co1pr05cu00201.inbound.protection.outlook.com.
52.101.42.10	mail-co1pr21cu00102.inbound.protection.outlook.com.
52.101.42.13	mail-mw2pr02cu00405.inbound.protection.outlook.com.
52.101.42.14	mail-mw2pr04cu00106.inbound.protection.outlook.com.
52.101.42.16	mail-co1pr05cu00300.inbound.protection.outlook.com.
52.101.42.18	mail-co1pr03cu00302.inbound.protection.outlook.com.
9 IP addresses in 52.101.42.0/24 appear to have a name (Pointer Record).
52.101.42.4   !ip !rdap !whois !bl !scan !tr !dnstr !g !gsec

  
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