DNSWHOIS.INFO - firstclassweb-com.mail.protection.outlook.com
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firstclassweb-com.mail.protection.outlook.com checked at 2025-11-18T09:14:44.060Z 723ms 60/60/60 100% R:11 allDone:true timedOut:false firstclassweb-com.mail.protection.outlook.com
| A | 2a01:111:f403:c931::1 🇺🇸 Microsoft | ||||||
| PTR | mail-sa9pr03cu00201.inbound.protection.outlook.com | ||||||
| A | 2a01:111:f403:f802::1 🇺🇸 Microsoft | ||||||
| PTR | mail-sj2pr05cu00101.inbound.protection.outlook.com | ||||||
| A | 2a01:111:f403:f901:: 🇺🇸 Microsoft | ||||||
| PTR | mail-mn2pr04cu00200.inbound.protection.outlook.com | ||||||
| A | 2a01:111:f403:f902::1 🇺🇸 Microsoft | ||||||
| PTR | mail-bl2pr02cu00101.inbound.protection.outlook.com | ||||||
| A | 52.101.8.32🇺🇸 Microsoft | ||||||
| PTR | mail-dm5pr02cu00100.inbound.protection.outlook.com | ||||||
| A | 52.101.41.6🇺🇸 Microsoft | ||||||
| PTR | mail-sj0pr03cu01406.inbound.protection.outlook.com | ||||||
| A | 52.101.42.9🇺🇸 Microsoft | ||||||
| PTR | mail-co1pr05cu00201.inbound.protection.outlook.com | ||||||
| A | 52.101.42.10🇺🇸 Microsoft | ||||||
| PTR | mail-co1pr21cu00102.inbound.protection.outlook.com | ||||||
mail.protection.outlook.com
| NS | ns1-proddns.glbdns.o365filtering.com | ||||||
| NS | ns2-proddns.glbdns.o365filtering.com | ||||||
MX for
AI analysis
firstclassweb-com.mail.protection.outlook.com functions as a mail server for firstclassweb.com.
Eight IP numbers are targeted by firstclassweb-com.mail.protection.outlook.com: 2a01:111:f403:c931::1, 2a01:111:f403:f802::1, 2a01:111:f403:f901::, 2a01:111:f403:f902::1, 52.101.8.32, 52.101.41.6, 52.101.42.9 and 52.101.42.10.
other host names including beastbi-com.mail.protection.outlook.com, shalemsda-org.mail.protection.outlook.com, treseixos-com-br.mail.protection.outlook.com, vakidney-com.mail.protection.outlook.com and enrageousdesign-com.mail.protection.outlook.com share IP numbers with firstclassweb-com.mail.protection.outlook.com.
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