ROBTEX.COM - ussf33.upstreamsecurity.net

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ussf33.upstreamsecurity.net checked at 2025-12-19T15:44:27.920Z 4747ms 40/40/40 100% R:8 allDone:true timedOut:false

`ussf33.upstreamsecurity.net`

	A	38.99.86.33^{🇺🇸 Cogent Communications, Inc.}
			PTR	`ussf33.upstreamsecurity.net`

	NS	`pdns13.domaincontrol.com`
	NS	`pdns14.domaincontrol.com`
	MX	`upstreamsecurity-net.mail.protection.outlook.com`
	A	198.49.23.144^{🇺🇸 SQUARESPACE}
	A	198.49.23.145^{🇺🇸 SQUARESPACE}
	A	198.185.159.144^{🇺🇸 SQUARESPACE}
	A	198.185.159.145^{🇺🇸 SQUARESPACE}

33.86.99.38.in-addr.arpa

33.4.145.50.in-addr.arpa

dinecollege.edu

susd.org

ivcc.edu

ussf33.upstreamsecurity.net serves as the mail server for dinecollege.edu, susd.org and ivcc.edu.

ussf33.upstreamsecurity.net points to a single IP number: 38.99.86.33.

Other host names, for instance ms33.tcnoc.com, share IP numbers with ussf33.upstreamsecurity.net.