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smtp1.isc4u.net checked at 2025-10-07T13:04:31.817Z 475ms 27/27/27 100% R:7

`smtp1.isc4u.net`

194.195.135.5^{🇩🇪 GTT Communications (AS3257)}

	NS	`pdns82.ultradns.biz`
	NS	`pdns82.ultradns.com`
	NS	`pdns82.ultradns.net`
	NS	`pdns82.ultradns.org`
	MX	`isc4u-net.mail.protection.outlook.com`

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stmp1.com

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smtp1.com

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p1smt.com

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tpms1.com

smtp1.isc4u.net points to a single IP number: 194.195.135.5.

Other host names such as gneiss.isc4u.de and smtp1.isc4u.de share IP numbers with smtp1.isc4u.net.

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