ROBTEX.COM - ussf52.upstreamsecurity.net
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ussf52.upstreamsecurity.net checked at 2025-12-19T15:44:50.158Z 3810ms 40/40/40 100% R:7 allDone:true timedOut:false ussf52.upstreamsecurity.net
| A | 38.99.86.52🇺🇸 Cogent Communications, Inc. | ||||||
| PTR | ussf52.upstreamsecurity.net | ||||||
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 | ||||||
PTR for
MX for
AI analysis
ussf52.upstreamsecurity.net serves as a mail server for sheldonisd.com, dinecollege.edu, susd.org and ivcc.edu.
ussf53.upstreamsecurity.net, ussf332.upstreamsecurity.net and ussf33.upstreamsecurity.net are commonly used mail servers together with ussf52.upstreamsecurity.net.
ussf52.upstreamsecurity.net points to a single IP address: 38.99.86.52.
Other host names, for instance email.tangent.com, share IP numbers with ussf52.upstreamsecurity.net.