`lifeguardtec.com`

DNSSEC	⚠️ Not signed
A	153.122.205.37^{🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
NS	`ns2.namedserver.net` ⭐
		A	157.120.112.212^{🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.113.212^{🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.114.212^{🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K.}
NS	`ns.namedserver.net`
		A	157.120.112.212^{🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.113.212^{🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K.}
		A	157.120.114.212^{🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K.}
MX	`mx.lifeguardtec.com` ⭐
		A	153.122.206.94^{🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
TXT	`v=spf1 include:_spf.shared-server.net ~all`
SOA	`ns.namedserver.net`root@namedserver.net serial=2698670613

`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=1774609697

Previously MX for

lifeguardtec.com

Subdomains

mx.lifeguardtec.com

Same first word

lifeguardtec.com

DNS History

11 records (4 active, 7 former)

●NSns.namedserver.net2026-02-19 → 2026-03-27 · 3 obs

○ 2017-04-20 22:52:06
● 2026-02-19 03:03:16
● 2026-03-27 11:11:32

○NSns1.rsjpserver.net2015-10-13 → 2017-04-20 · 5 obs

○ 2015-05-10 23:26:08
● 2015-10-13 11:26:22
● 2017-04-20 22:52:06
○ 2026-02-19 03:03:16
○ 2026-03-27 11:11:32

○NSns1.secure.net2015-05-10 → 2015-05-10 · 3 obs

● 2015-05-10 23:26:08
○ 2015-10-13 11:26:22
○ 2026-03-27 11:11:32

●NSns2.namedserver.net2026-02-19 → 2026-03-27 · 3 obs

○ 2017-04-20 22:52:06
● 2026-02-19 03:03:16
● 2026-03-27 11:11:32

○NSns2.rsjpserver.net2015-10-13 → 2017-04-20 · 5 obs

○ 2015-05-10 23:26:08
● 2015-10-13 11:26:22
● 2017-04-20 22:52:06
○ 2026-02-19 03:03:16
○ 2026-03-27 11:11:32

○NSns2.secure.net2015-05-10 → 2015-05-10 · 3 obs

● 2015-05-10 23:26:08
○ 2015-10-13 11:26:22
○ 2026-03-27 11:11:32

○MXlifeguardtec.com2015-05-10 → 2017-04-20 · 4 obs

● 2015-05-10 23:26:08
● 2017-04-20 22:52:06
○ 2026-02-19 03:03:16
○ 2026-03-27 11:11:32

●MXmx.lifeguardtec.com2026-02-19 → 2026-03-27 · 3 obs

○ 2017-04-20 22:52:06
● 2026-02-19 03:03:16
● 2026-03-27 11:11:32

○A111.68.165.272015-05-10 → 2015-05-10 · 3 obs

● 2015-05-10 23:26:08
○ 2015-10-13 11:26:22
○ 2026-03-27 11:11:32

○A153.122.154.2252015-10-13 → 2017-04-20 · 5 obs

○ 2015-05-10 23:26:08
● 2015-10-13 11:26:22
● 2017-04-20 22:52:06
○ 2026-02-19 03:03:16
○ 2026-03-27 11:11:32

●A153.122.205.372026-02-19 → 2026-03-27 · 3 obs

○ 2017-04-20 22:52:06
● 2026-02-19 03:03:16
● 2026-03-27 11:11:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
lifeguardtec.com	ns.namedserver.net, ns2.namedserver.net	-

✅ Authoritative Response

Server:157.120.114.212

NS records: ns.namedserver.net, ns2.namedserver.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lifeguardtec.com (unsigned zone)

⏱️ Timing

Total: 974ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.122.205.37`
NS	2	`ns.namedserver.net, ns2.namedserver.net`
MX	1	`mx.lifeguardtec.com (pri: 100)`
TXT	1	`v=spf1 include:_spf.shared-server.net ~a`
SOA	1	`ns.namedserver.net root.namedserver.net`

Analysis

Hierarchy

mx.lifeguardtec.com has lifeguardtec.com as its parent.

IP Addresses

lifeguardtec.com maps to IP address 153.122.205.37.

Other host names, for instance www.tsx.co.jp, www.naniwaroki.co.jp, colordew.com, silicajp.com and feifei.jp share IP numbers with lifeguardtec.com.

Name Servers

Two name servers ns2.namedserver.net and ns.namedserver.net are delegated to lifeguardtec.com.

lifeguardtec.com uses the same name server configuration as other domains, such as sub0000549556.hmk-temp.com, mameda.jp, konohanasakuya.net, kunda.jp and 144.66.125.211.in-addr.arpa.

lifeguardtec.com shares name servers with other domains at least partially, for instance inter-f.jp and 105.88.125.211.in-addr.arpa.

Host names with three IP numbers

ns2.namedserver.net points to: 157.120.112.212, 157.120.113.212 and 157.120.114.212

ns.namedserver.net points to: 157.120.112.212, 157.120.113.212 and 157.120.114.212

Note that ns2.namedserver.net and ns.namedserver.net both point to the same three IPs: 157.120.112.212, 157.120.113.212 and 157.120.114.212

Names pointing to 157.120.112.212: ns2.namedserver.net and ns.namedserver.net

Names pointing to 157.120.113.212: ns2.namedserver.net and ns.namedserver.net

Names pointing to 157.120.114.212: ns2.namedserver.net and ns.namedserver.net

Mail Servers

lifeguardtec.com is handled by a single mail server, mx.lifeguardtec.com.

mx.lifeguardtec.com points to one IP number: 153.122.206.94.

lifeguardtec.com - robtex.com