MXLIST.NET - opt-systems.com

Search for IP or hostnames:

opt-systems.com checked at 2025-11-13T21:13:59.322Z 368ms 95/95/95 100% R:20 allDone:true timedOut:false

`opt-systems.com`

NS	`dns1.siel.si`
		A	2a02:28b0:53::53 ^{🇸🇮 SIEL}
			PTR	`dns1.siel.si`
		A	46.19.12.12^{🇸🇮 SIEL}
			PTR	`dns1.siel.si`
NS	`dns2.siel.si`
		A	46.19.13.13^{🇸🇮 SIEL}
			PTR	`dns2.siel.si`
NS	`dns3.siel.si`
		A	217.61.252.53^{🇸🇮 SIEL}
			PTR	`dns3.siel.si`
MX	`optsystems-com0i.mail.protection.outlook.com`
		A	2a01:111:f403:ca04::6 ^{🇮🇪 Microsoft}
			PTR	`mail-db4pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::b ^{🇮🇪 Microsoft}
			PTR	`mail-dbbpr03cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::2 ^{🇳🇱 Microsoft}
			PTR	`mail-am0pr83cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::c ^{🇳🇱 Microsoft}
			PTR	`mail-as8pr05cu00304.inbound.protection.outlook.com`
		A	52.101.68.16^{🇮🇪 Microsoft}
			PTR	`mail-db4pr02cu00400.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.6^{🇳🇱 Microsoft}
			PTR	`mail-am6pr04cu00306.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
A	185.29.16.100^{🇸🇮 Zabec.net}
		PTR	`natasa.zabec.net`

opt-systems.com

opt-systems.com

pto-systems.com

top-systems.jp

top-systems.nl

top-systems.eu

opt-systems.com points to a single IP number: 185.29.16.100.

Other host names, for instance mail.interal.si, www.regina.si, pond.si, sindirela.si and _dc-mx.cdb5869d78bc.compmarket.eu share IP numbers with opt-systems.com.

The delegation for opt-systems.com is handled by three name servers: dns1.siel.si, dns2.siel.si and dns3.siel.si.

opt-systems.com at least partially shares name servers with other domains, for instance dijaski.net, tatrenutek.si, gmajnica.com, ostervid.si and aquaviva.si.

Host names with two IP numbers:

dns1.siel.si points to 2a02:28b0:53::53 and 46.19.12.12.

Host names with one IP number:

opt-systems.com is handled by a single mail server, optsystems-com0i.mail.protection.outlook.com.

optsystems-com0i.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:ca04::6, 2a01:111:f403:ca04::b, 2a01:111:f403:ca09::2, 2a01:111:f403:ca09::c, 52.101.68.16, 52.101.73.4, 52.101.73.6 and 52.101.73.26.

dbq