MXLIST.NET - btw.fastmail.us

Search for IP or hostnames:

btw.fastmail.us checked at 2025-10-28T05:53:40.207Z 1188ms 71/71/71 100% R:7

`btw.fastmail.us`

MX	`in1-smtp.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 FASTMAILPTYLTD-AS-AP}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 FASTMAILPTYLTD-AS-AP}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP}
			PTR	`phl-mx-06.messagingengine.com`
A	103.168.172.37^{🇺🇸 FASTMAILPTYLTD-AS-AP}
		PTR	`userweb.fastmail.com`
A	103.168.172.52^{🇺🇸 FASTMAILPTYLTD-AS-AP}
		PTR	`userweb.fastmail.com`

`fastmail.us`

	NS	`fmns1.messagingengine.com`
	NS	`fmns2.messagingengine.com`
	MX	`in1-smtp.messagingengine.com`
	MX	`in2-smtp.messagingengine.com`
	A	103.168.172.65^{🇺🇸 FASTMAILPTYLTD-AS-AP}

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AI analysis

btw.fastmail.us points to two IP numbers: 103.168.172.37 and 103.168.172.52.

Other host names such as yavinholdings.com, roquefort.martijnwalraven.com, ns3.iaal.us, entropy.slashnull.org and cyan.blue share IP numbers with btw.fastmail.us.

btw.fastmail.us is handled by two mail servers: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

btw.fastmail.us uses the same mail server setup as other domains, for instance casualprogrammer.com, wraxton.com, movsci.com, steel4.com and ciadurante.com.

btw.fastmail.us shares some mail servers with other domains, for instance hh0882.net and splendidproductions.co.uk.

Host names with four IP numbers:

in1-smtp.messagingengine.com points to 103.168.172.220, 103.168.172.221, 103.168.172.222 and 103.168.172.223.

Host names with two IP numbers:

in2-smtp.messagingengine.com points to 103.168.172.220 and 103.168.172.221.

Host names that point to 103.168.172.220: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

Host names that point to 103.168.172.221: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

dbq