linuxcertified.com - dns.ninja

`linuxcertified.com`

DNSSEC	⚠️ Not signed
A	208.84.118.170^{🇺🇸 4 LESS COMMUNICATIONS208.84.116.0/22 4 Less Communications, Inc. 9586 Topanga Canyon Blvd. Chatsworth CA 91311 United States}
		PTR	`linuxcertified.com`
NS	`ns-cloud-b1.googledomains.com` ⭐
		A	2001:4860:4802:32::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b1.googledomains.com`
		A	216.239.32.107^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-b1.googledomains.com`
NS	`ns-cloud-b2.googledomains.com`
		A	2001:4860:4802:34::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b2.googledomains.com`
		A	216.239.34.107^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-b2.googledomains.com`
NS	`ns-cloud-b3.googledomains.com`
		A	2001:4860:4802:36::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b3.googledomains.com`
		A	216.239.36.107^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-b3.googledomains.com`
NS	`ns-cloud-b4.googledomains.com`
		A	2001:4860:4802:38::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b4.googledomains.com`
		A	216.239.38.107^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-b4.googledomains.com`
MX	`mx1.emailsrvr.com` ⭐
		A	173.203.187.1^{🇺🇸 RACKSPACE-IAD173.203.128.0/18 Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229}
			PTR	`mx1.emailsrvr.com`
MX	`mx2.emailsrvr.com`⁽²⁰⁾
		A	184.106.54.2^{🇺🇸 RACKSPACE-ORD184.106.54.0/24 Rackspace ORD}
			PTR	`mx2.emailsrvr.com`
TXT	`google-site-verification=iBjxeXjs2yF3vbZ30XKlN6SN4Tk2K5BirNFUCSHCrCU`
SOA	`ns-cloud-b1.googledomains.com`cloud-dns-hostmaster@google.com serial=59

`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=1785152797

rank #615816 globally
rank #258643 in the tld
WOT: SAFE (77/100)

PTR for

170.118.84.208.in-addr.arpa

Subdomains

otrs.linuxcertified.com

Same first word

linuxcertified.org

linuxcertified.com

Similar names

certifiedlinux.com

DNS History

10 records (7 active, 3 former)

●NSns-cloud-b1.googledomains.com2026-02-15 → 2026-07-27 · 3 obs

○ 2017-01-29 17:32:52
● 2026-02-15 21:54:04
● 2026-07-27 12:11:22

●NSns-cloud-b2.googledomains.com2026-02-15 → 2026-07-27 · 3 obs

○ 2017-01-29 17:32:52
● 2026-02-15 21:54:04
● 2026-07-27 12:11:22

●NSns-cloud-b3.googledomains.com2026-02-15 → 2026-07-27 · 3 obs

○ 2017-01-29 17:32:52
● 2026-02-15 21:54:04
● 2026-07-27 12:11:22

●NSns-cloud-b4.googledomains.com2026-02-15 → 2026-07-27 · 3 obs

○ 2017-01-29 17:32:52
● 2026-02-15 21:54:04
● 2026-07-27 12:11:22

○NSns85.worldnic.com2015-08-16 → 2017-01-29 · 4 obs

● 2015-08-16 00:48:16
● 2017-01-29 17:32:52
○ 2026-02-15 21:54:04
○ 2026-07-27 12:11:22

○NSns86.worldnic.com2015-08-16 → 2017-01-29 · 4 obs

● 2015-08-16 00:48:16
● 2017-01-29 17:32:52
○ 2026-02-15 21:54:04
○ 2026-07-27 12:11:22

●MXmx1.emailsrvr.com2015-08-16 → 2026-07-27 · 2 obs

● 2015-08-16 00:48:16
● 2026-07-27 12:11:22

●MXmx2.emailsrvr.com2015-08-16 → 2026-07-27 · 2 obs

● 2015-08-16 00:48:16
● 2026-07-27 12:11:22

○A208.84.118.1252015-08-16 → 2017-01-29 · 4 obs

● 2015-08-16 00:48:16
● 2017-01-29 17:32:52
○ 2026-02-15 21:54:04
○ 2026-07-27 12:11:22

●A208.84.118.1702026-02-15 → 2026-07-27 · 3 obs

○ 2017-01-29 17:32:52
● 2026-02-15 21:54:04
● 2026-07-27 12:11:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
linuxcertified.com	ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com	8 records

✅ Authoritative Response

Server:216.239.38.107

NS records: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linuxcertified.com (unsigned zone)

⏱️ Timing

Total: 291ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`208.84.118.170`
NS	4	`ns-cloud-b1.googledomains.com, ns-cloud-b3.googledomains.com...`
MX	2	`mx1.emailsrvr.com (pri: 10), mx2.emailsrvr.com (pri: 20)`
TXT	1	`google-site-verification=iBjxeXjs2yF3vbZ`
SOA	1	`ns-cloud-b1.googledomains.com cloud-dns-`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns-cloud-b1.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com...)

Analysis

Hierarchy

linuxcertified.com serves as the parent of otrs.linuxcertified.com.

IP Addresses

linuxcertified.com has exactly one IP address — 208.84.118.170.

Additional host names — including otrs.linuxcertified.com and linuxcertified.org — share IP numbers with linuxcertified.com.

Name Servers

Four name servers handle the delegation for linuxcertified.com: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com and ns-cloud-b4.googledomains.com.

linuxcertified.com has at least partial name server overlap with other domains, such as r1200rforum.com, kindlingminds.com, move2kingston.com and two others.

ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com and ns-cloud-b4.googledomains.com all point to exactly two IP numbers each: ns-cloud-b1.googledomains.com → 216.239.32.107 and 2001:4860:4802:32::6b; ns-cloud-b2.googledomains.com → 216.239.34.107 and 2001:4860:4802:34::6b; ns-cloud-b3.googledomains.com → 216.239.36.107 and 2001:4860:4802:36::6b; ns-cloud-b4.googledomains.com → 216.239.38.107 and 2001:4860:4802:38::6b.

Mail Servers

linuxcertified.com uses two mail servers, mx1.emailsrvr.com and mx2.emailsrvr.com.

The mail server setup of linuxcertified.com matches that of other domains such as vanessairzyk.com, dorbinart.com, pearlandgym.com and two others.

At least some of the mail servers used by linuxcertified.com are shared with other domains: oneilfh.com, metronorte.com.gt, af-arch.com and two others among them.

mx1.emailsrvr.com directs to 173.203.187.1 and mx2.emailsrvr.com directs to 184.106.54.2; each host name points to exactly one IP number.