linuxcolumbus.com - robtex.com
linuxcolumbus.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 76.10.194.75🇺🇸 BLUEMILE76.10.192.0/20 | ||||||
| NS | ns4.linuxcolumbus.com ⭐ | ||||||
| A | 76.10.194.81🇺🇸 BLUEMILE76.10.192.0/20 | ||||||
| PTR | ns4.linuxcolumbus.com | ||||||
| PTR | ns6.userfriendlyis.com | ||||||
| NS | ns2.linuxcolumbus.com | ||||||
| A | 76.10.194.90🇺🇸 BLUEMILE76.10.192.0/20 | ||||||
| PTR | ns2.linuxcolumbus.com | ||||||
| PTR | ns2.userfriendlyis.com | ||||||
| MX | mail.linuxcolumbus.com ⭐ | ||||||
| A | 76.10.194.87🇺🇸 BLUEMILE76.10.192.0/20 | ||||||
| PTR | mail.linuxcolumbus.com | ||||||
| PTR | mail.n8vw.com | ||||||
| PTR | emailservices.userfriendlyis.com | ||||||
| PTR | mail.allanholdsworth.net | ||||||
| TXT | v=spf1 ip4:76.10.194.64/27 a mx ptr ~all | ||||||
| SOA | ns4.linuxcolumbus.comhostmaster@linuxcolumbus.com serial=1338930226 | ||||||
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=1774473297 | ||||||
Subdomains
Same first word
linuxcolumbus.com |
DNS History
8 records (4 active, 4 former)
●NSns2.linuxcolumbus.com2007-08-14 → 2026-03-25 · 2 obs
● 2026-03-25 21:15:54
○NSns3.linuxcolumbus.com2016-09-26 → 2017-07-10 · 5 obs
● 2016-09-26 00:15:10
● 2017-07-10 10:15:24
○ 2026-02-16 02:51:46
○ 2026-03-25 21:15:54
●NSns4.linuxcolumbus.com2007-08-14 → 2026-03-25 · 2 obs
● 2026-03-25 21:15:54
○NSns6.linuxcolumbus.com2007-08-14 → 2016-04-04 · 4 obs
● 2016-04-04 14:23:50
○ 2016-09-26 00:15:10
○ 2026-03-25 21:15:54
●MXmail.linuxcolumbus.com2007-08-14 → 2026-03-25 · 2 obs
● 2026-03-25 21:15:54
○A76.10.194.702007-08-14 → 2015-08-10 · 4 obs
● 2015-08-10 07:38:30
○ 2015-11-30 20:18:36
○ 2026-03-25 21:15:54
○A76.10.194.712015-11-30 → 2016-09-26 · 5 obs
● 2015-11-30 20:18:36
● 2016-09-26 00:15:10
○ 2017-07-10 10:15:24
○ 2026-03-25 21:15:54
●A76.10.194.752017-07-10 → 2026-03-25 · 3 obs
● 2017-07-10 10:15:24
● 2026-03-25 21:15:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| linuxcolumbus.com | ns2.linuxcolumbus.com, ns4.linuxcolumbus.com | 2 records |
✅ Authoritative Response
Server:76.10.194.81
NS records: ns2.linuxcolumbus.com, ns4.linuxcolumbus.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for linuxcolumbus.com (unsigned zone)
⏱️ Timing
Total: 262ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 76.10.194.75 |
| NS | 2 | ns2.linuxcolumbus.com, ns4.linuxcolumbus.com |
| MX | 1 | mail.linuxcolumbus.com (pri: 0) |
| TXT | 1 | v=spf1 ip4:76.10.194.64/27 a mx ptr ~all |
| SOA | 1 | ns4.linuxcolumbus.com hostmaster.linuxco |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (ns2.linuxcolumbus.com, ns4.linuxcolumbus.com)
Analysis
Hierarchy
linuxcolumbus.com is a parent of ns4.linuxcolumbus.com, ns6.linuxcolumbus.com, mail.linuxcolumbus.com and ns2.linuxcolumbus.com.
IP Addresses
linuxcolumbus.com resolves to a single IP: 76.10.194.75.
Name Servers
linuxcolumbus.com has two name servers: ns2.linuxcolumbus.com and ns4.linuxcolumbus.com.
linuxcolumbus.com shares the same name server setup as other domains, for example 68.194.10.76.in-addr.arpa, transformed4life.org, 80.194.10.76.in-addr.arpa, 81.194.10.76.in-addr.arpa and 76.194.10.76.in-addr.arpa.
linuxcolumbus.com shares some name servers with other domains, for example proactivelifechoices.com, ufis.net, 89.194.10.76.in-addr.arpa, 85.194.10.76.in-addr.arpa and 87.194.10.76.in-addr.arpa.
These name servers are commonly used alongside ns2.userfriendlyis.com, ns4.userfriendlyis.com, ns2.ufis.net and ns4.ufis.net.
Host names with a single IP:
ns2.linuxcolumbus.com points to 76.10.194.90
ns4.linuxcolumbus.com points to 76.10.194.81
Mail Servers
linuxcolumbus.com is handled by a single mail server, mail.linuxcolumbus.com.
Host name mail.linuxcolumbus.com points to IP 76.10.194.87.