ctbsys.com - robtex.com
ctbsys.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=1776073312 | ||||||
Previously MX for
ctbsys.com |
Subdomains
www.ctbsys.com |
Same first word
ctbsys.com |
Similar names
bstysc.com |
cbtsys.com |
bscsty.com |
tcsysb.net |
sctsyb.com |
btsysc.com |
stycsb.com |
sytcsb.com |
ytcssb.com |
tcsysb.com |
DNS History
13 records (5 active, 8 former)
○NSns1.secure.net2007-08-13 → 2015-12-08 · 4 obs
● 2015-12-08 16:07:26
○ 2016-03-18 15:48:04
○ 2026-04-13 09:56:30
○NSns2.secure.net2007-08-13 → 2015-12-08 · 4 obs
● 2015-12-08 16:07:26
○ 2016-03-18 15:48:04
○ 2026-04-13 09:56:30
●NSns65.domaincontrol.com2016-03-18 → 2026-04-13 · 3 obs
● 2016-03-18 15:48:04
● 2026-04-13 09:56:30
●NSns66.domaincontrol.com2016-03-18 → 2026-04-13 · 3 obs
● 2016-03-18 15:48:04
● 2026-04-13 09:56:30
○MX72.82.156.852015-12-08 → 2015-12-08 · 4 obs
● 2015-12-08 16:07:26
○ 2016-03-18 15:48:04
○ 2026-04-13 09:56:30
○MX72.82.156.852015-08-13 → 2015-08-13 · 4 obs
● 2015-08-13 00:25:30
○ 2015-12-08 16:07:26
○ 2026-04-13 09:56:30
○MXctbsys-com.mail.eo.outlook.com2020-03-06 → 2020-03-06 · 4 obs
● 2020-03-06 17:22:38
○ 2026-03-26 11:37:36
○ 2026-04-13 09:56:30
○MXctbsys.com2007-08-13 → 2007-08-13 · 3 obs
○ 2015-08-13 00:25:30
○ 2026-04-13 09:56:30
●MXd339002a.ess.barracudanetworks.com2026-03-26 → 2026-04-13 · 3 obs
● 2026-03-26 11:37:36
● 2026-04-13 09:56:30
●MXd339002b.ess.barracudanetworks.com2026-03-26 → 2026-04-13 · 3 obs
● 2026-03-26 11:37:36
● 2026-04-13 09:56:30
○MXmail.ctbsys.com2016-03-18 → 2017-03-22 · 5 obs
● 2016-03-18 15:48:04
● 2017-03-22 05:20:44
○ 2020-03-06 17:22:38
○ 2026-04-13 09:56:30
●A107.180.41.1652016-03-18 → 2026-04-13 · 3 obs
● 2016-03-18 15:48:04
● 2026-04-13 09:56:30
○A204.202.252.212007-08-13 → 2015-12-08 · 4 obs
● 2015-12-08 16:07:26
○ 2016-03-18 15:48:04
○ 2026-04-13 09:56:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, f.gtld-servers.net, a.gtld-servers.net, d.gtld-servers.net... | - |
| ctbsys.com | ns66.domaincontrol.com, ns65.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.70.43
NS records: ns66.domaincontrol.com, ns65.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctbsys.com (unsigned zone)
⏱️ Timing
Total: 135ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 107.180.41.165 |
| NS | 2 | ns65.domaincontrol.com, ns66.domaincontrol.com |
| MX | 2 | d339002a.ess.barracudanetworks.com (pri:, d339002b.ess.barracudanetworks.com (pri: |
| TXT | 2 | MS=BD1C2806343F38815012FA931D12A8AC05230, v=spf1 include:spf.ess.barracudanetworks |
| SOA | 1 | ns65.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns66.domaincontrol.com, ns66.domaincontrol.com, ns65.domaincontrol.com...)
Analysis
Hierarchy
ctbsys.com is the parent of www.ctbsys.com.
IP Addresses
ctbsys.com resolves to one IP number: 107.180.41.165.
other host names including mail.krusewoods.com, forfourholdingsllc.com, lincolncentercampus.com, krusewoods.com and mail.marketsquaresf.com share IP numbers with ctbsys.com.
Name Servers
ctbsys.com is delegated to two name servers ns65.domaincontrol.com and ns66.domaincontrol.com.
ctbsys.com shares the same name server setup as other domains, for instance yellody.com, fatecraft.net, onedelray.com, mlps2012.net and thearcadiabarbershop.com.
Host names with two IP numbers:
The host name ns65.domaincontrol.com points to 2603:5:2164::2b and 97.74.102.43; the host name ns66.domaincontrol.com points to 2603:5:2264::2b and 173.201.70.43.
Mail Servers
Two mail servers handle ctbsys.com: d339002a.ess.barracudanetworks.com and d339002b.ess.barracudanetworks.com.
Host names with three IPs:
d339002a.ess.barracudanetworks.com points to: 209.222.82.252, 209.222.82.253 and 209.222.82.255.
d339002b.ess.barracudanetworks.com points to: 209.222.82.252, 209.222.82.253 and 209.222.82.255.
Hosts pointing to 209.222.82.252: d339002a.ess.barracudanetworks.com and d339002b.ess.barracudanetworks.com.
Hosts pointing to 209.222.82.253: d339002a.ess.barracudanetworks.com and d339002b.ess.barracudanetworks.com.
Hosts pointing to 209.222.82.255: d339002a.ess.barracudanetworks.com and d339002b.ess.barracudanetworks.com.