`ussf582.upstreamsecurity.net`

DNSSEC	⚠️ Not signed
A	50.145.4.58^{🇺🇸 COMCAST-IBONE50.128.0.0/9 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054}
		PTR	`ussf582.upstreamsecurity.net`
TXT	`v=spf1 include:upstreamsecurity.net -all`

`upstreamsecurity.net`

	DNSSEC	⚠️ Not signed
	A	198.49.23.144^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.49.23.145^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.185.159.144^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.185.159.145^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	NS	`pdns13.domaincontrol.com` ⭐
	NS	`pdns14.domaincontrol.com`
	MX	`upstreamsecurity-net.mail.protection.outlook.com` ⭐
	TXT	`p71r87nmcsfbzy6xt522btbr54lh7d62`
	TXT	`_ssvn6aregg0hka2cy8hdl6lt1a4er9e`
	TXT	`google-site-verification=8mB3JBHhtGxOvT(0x353378)UxfzyyzbhlZMAG4k0HXmRU9d-M`
	TXT	`v=spf1 IP4:50.145.4.0/24 IP4:38.99.86.32 IP4:43.228.187.180 IP4:38.99.86.33 I...`
	SOA	`pdns13.domaincontrol.com`dns@jomax.net 2025-10-08 #1

📈 Tranco rank: #377,191

PTR for

58.4.145.50.in-addr.arpa

MX for

napoleonohio.com

stmary.edu

orangeburgcounty.org

fbctroy.org

DNS History

1 record (1 active, 0 former)

●A50.145.4.582026-02-22 → 2026-04-23 · 2 obs

● 2026-02-22 06:35:32
● 2026-04-23 23:04:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
upstreamsecurity.net	pdns13.domaincontrol.com, pdns14.domaincontrol.com	-

✅ Authoritative Response

Server:173.201.78.56

NS records: pdns13.domaincontrol.com, pdns14.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for upstreamsecurity.net (unsigned zone)

⏱️ Timing

Total: 109ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`50.145.4.58`
TXT	1	`v=spf1 include:upstreamsecurity.net -all`

Analysis

Mail Server Role

ussf582.upstreamsecurity.net serves as the mail server for napoleonohio.com, stmary.edu, orangeburgcounty.org and fbctroy.org.

Commonly, ussf362.upstreamsecurity.net, ussf36.upstreamsecurity.net and ussf58.upstreamsecurity.net serve as mail servers together with ussf582.upstreamsecurity.net.

IP Addresses

ussf582.upstreamsecurity.net points to a single IP: 50.145.4.58.

ussf582.upstreamsecurity.net - robtex.com

ussf582.upstreamsecurity.net

upstreamsecurity.net