linuxcertified.com - dns.ninja
linuxcertified.com
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.netnstld@verisign-grs.com serial=1781243103 | ||||||
rank #276816 in the tld
WOT: SAFE (77/100)
PTR for
Subdomains
otrs.linuxcertified.com |
Same first word
linuxcertified.org |
linuxcertified.com |
Similar names
DNS History
10 records (7 active, 3 former)
●NSns-cloud-b1.googledomains.com2026-02-15 → 2026-06-12 · 3 obs
● 2026-02-15 21:54:04
● 2026-06-12 06:01:14
●NSns-cloud-b2.googledomains.com2026-02-15 → 2026-06-12 · 3 obs
● 2026-02-15 21:54:04
● 2026-06-12 06:01:14
●NSns-cloud-b3.googledomains.com2026-02-15 → 2026-06-12 · 3 obs
● 2026-02-15 21:54:04
● 2026-06-12 06:01:14
●NSns-cloud-b4.googledomains.com2026-02-15 → 2026-06-12 · 3 obs
● 2026-02-15 21:54:04
● 2026-06-12 06:01:14
○NSns85.worldnic.com2015-08-16 → 2017-01-29 · 4 obs
● 2017-01-29 17:32:52
○ 2026-02-15 21:54:04
○ 2026-06-12 06:01:14
○NSns86.worldnic.com2015-08-16 → 2017-01-29 · 4 obs
● 2017-01-29 17:32:52
○ 2026-02-15 21:54:04
○ 2026-06-12 06:01:14
●MXmx1.emailsrvr.com2015-08-16 → 2026-06-12 · 2 obs
● 2026-06-12 06:01:14
●MXmx2.emailsrvr.com2015-08-16 → 2026-06-12 · 2 obs
● 2026-06-12 06:01:14
○A208.84.118.1252015-08-16 → 2017-01-29 · 4 obs
● 2017-01-29 17:32:52
○ 2026-02-15 21:54:04
○ 2026-06-12 06:01:14
●A208.84.118.1702026-02-15 → 2026-06-12 · 3 obs
● 2026-02-15 21:54:04
● 2026-06-12 06:01:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, c.gtld-servers.net, i.gtld-servers.net, m.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:216.239.34.107
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: 431ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 208.84.118.170 |
| NS | 4 | ns-cloud-b2.googledomains.com, ns-cloud-b4.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
linuxcertified.com is delegated to four name servers, 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.
Host names with four IP numbers:
mx2.emailsrvr.com has four IP addresses: 108.166.43.2, 146.20.161.2, 173.203.187.2 and 184.106.54.2.
Host names with one IP number:
mx1.emailsrvr.com points to the IP address 146.20.161.1.