ROBTEX.COM - postoffice.harvard.net

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postoffice.harvard.net checked at 2025-12-19T13:27:09.661Z 2813ms 49/49/49 100% R:17 allDone:true timedOut:false

postoffice.harvard.net

CNAMEmailhost.concentric.com
MXmx1c28.concentric.com
A66.226.70.78🇨🇦 Hostopia, a HostPapa, Inc. company [USA]
PTRmx1c28.carrierzone.com
MXmx2c28.concentric.com
A66.226.70.79🇨🇦 Hostopia, a HostPapa, Inc. company [USA]
PTRmx2c28.carrierzone.com
MXmx3c28.concentric.com
A66.226.70.72🇨🇦 Hostopia, a HostPapa, Inc. company [USA]
PTRmx3c28.carrierzone.com
MXmx4c28.concentric.com
A66.226.70.73🇨🇦 Hostopia, a HostPapa, Inc. company [USA]
PTRmx4c28.carrierzone.com

harvard.net

MXmx1c28.concentric.com
MXmx2c28.concentric.com
MXmx3c28.concentric.com
MXmx4c28.concentric.com
NSns-scrm.verizonwireless.com
NSns-tmtr.verizonwireless.com
NSns-twbg.verizonwireless.com
A204.74.99.100🇺🇸 Neustar

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AI analysis

postoffice.harvard.net is handled by four mail servers: mx1c28.concentric.com, mx2c28.concentric.com, mx3c28.concentric.com and mx4c28.concentric.com.

postoffice.harvard.net shares at least partially some mail servers with other domains, for instance mailhost.concentric.com, neurofilmfestival.net, gatewaytractor.com, wcfoa.org and sw.xo.com.

Host names with one IP number: mx1c28.concentric.com points to: 66.226.70.78; mx2c28.concentric.com points to: 66.226.70.79; mx3c28.concentric.com points to: 66.226.70.72; mx4c28.concentric.com points to: 66.226.70.73.