`school21test.com`

DNSSEC	⚠️ Not signed
A	23.253.150.190^{🇺🇸 RACKSPACE-IAD23.253.128.0/19 Rackspace}
NS	`dns1.stabletransit.com` ⭐
		A	69.20.95.4^{🇺🇸 RACKSPACE-DFW69.20.95.0/24 Rackspace, 5000 Walzem Road, San Antonio, TX 78218}
			PTR	`ns.rackspace.com`
NS	`dns2.stabletransit.com`
		A	65.61.188.4^{🇺🇸 RACKSPACE-LON65.61.188.0/24 Rackspace, 5000 Walzem Road, San Antonio, TX 78218}
			PTR	`ns2.rackspace.com`
MX	`smtp.secureserver.net` ⭐
		A	216.69.141.71^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v01.prod.phx3.secureserver.net`
		A	216.69.141.84^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v01.prod.phx3.secureserver.net`
		A	216.69.141.113^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v01.prod.phx3.secureserver.net`
MX	`mailstore1.secureserver.net`⁽¹⁰⁾
		A	216.69.141.78^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v02.prod.phx3.secureserver.net`
		A	216.69.141.114^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v02.prod.phx3.secureserver.net`
		A	216.69.141.162^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v02.prod.phx3.secureserver.net`
SOA	`dns1.stabletransit.com`ipadmin@stabletransit.com serial=1399187534

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291435

Same first word

school21test.com

DNS History

5 records (5 active, 0 former)

●NSdns1.stabletransit.com2015-08-12 → 2026-03-24 · 2 obs

● 2015-08-12 19:02:16
● 2026-03-24 07:18:34

●NSdns2.stabletransit.com2015-08-12 → 2026-03-24 · 2 obs

● 2015-08-12 19:02:16
● 2026-03-24 07:18:34

●MXmailstore1.secureserver.net2015-08-12 → 2026-03-24 · 2 obs

● 2015-08-12 19:02:16
● 2026-03-24 07:18:34

●MXsmtp.secureserver.net2015-08-12 → 2026-03-24 · 2 obs

● 2015-08-12 19:02:16
● 2026-03-24 07:18:34

●A23.253.150.1902015-08-12 → 2026-03-24 · 2 obs

● 2015-08-12 19:02:16
● 2026-03-24 07:18:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
school21test.com	dns1.stabletransit.com, dns2.stabletransit.com	2 records

✅ Authoritative Response

Server:65.61.188.4

NS records: dns1.stabletransit.com, dns2.stabletransit.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for school21test.com (unsigned zone)

⏱️ Timing

Total: 376ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`23.253.150.190`
NS	2	`dns1.stabletransit.com, dns2.stabletransit.com`
MX	2	`smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10)`
SOA	1	`dns1.stabletransit.com ipadmin.stabletra`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns1.stabletransit.com, dns2.stabletransit.com)

Analysis

IP Addresses

school21test.com points to IP number 23.253.150.190.

Name Servers

school21test.com is delegated to two name servers: dns1.stabletransit.com and dns2.stabletransit.com.

school21test.com uses the same name server setup as other domains such as sven-welzel.net, heathershaw.com, dgsta.com, resonator.net.au and energyninetyfive.com.

school21test.com shares name servers with other domains at least partially, for example buffysainte-marie.com, 406x.com, raa.asn.au, dkfleetsales.com and milliniummotors.com.

these name servers are commonly paired with ns.rackspace.com, dns.stabletransit.com, ns2.rackspace.com, ns1.slicehost.net, ns1.photofolio.io, ns2.photofolio.io and ns1.redmantech.ca.

Host names with one IP number:

dns1.stabletransit.com points to: 69.20.95.4.

dns2.stabletransit.com points to: 65.61.188.4.

Mail Servers

Two mail servers mailstore1.secureserver.net and smtp.secureserver.net handle school21test.com.

school21test.com shares the same mail server setup as other domains, for instance sarovahotels.net, waderam.com, blaer.org, la-zing.net and diagnos.us.

school21test.com shares at least partially some mail servers with other domains, for instance studentshirt.de.

Host names with three IP numbers:

mailstore1.secureserver.net points to: 216.69.141.78, 216.69.141.114 and 216.69.141.162.

smtp.secureserver.net points to: 216.69.141.71, 216.69.141.84 and 216.69.141.113.

school21test.com - robtex.com