ctb9.com - robtex.com
ctb9.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 34.229.166.50🇺🇸 Amazon34.224.0.0/12 EC2 Region prefix | ||||||
| PTR | ec2-34-229-166-50.compute-1.amazonaws.com | ||||||
| NS | ns1.ctb9.com ⭐ | ||||||
| A | 18.205.186.231🇺🇸 Amazon18.204.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-18-205-186-231.compute-1.amazonaws.com | ||||||
| NS | ns1.csof.net | ||||||
| A | 18.205.186.231🇺🇸 Amazon18.204.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-18-205-186-231.compute-1.amazonaws.com | ||||||
| NS | ns2.csof.net | ||||||
| A | 23.21.178.27🇺🇸 Amazon23.20.0.0/15 EC2 IAD prefix | ||||||
| PTR | ec2-23-21-178-27.compute-1.amazonaws.com | ||||||
| NS | ns3.csof.net | ||||||
| A | 3.214.185.54🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix | ||||||
| PTR | ec2-3-214-185-54.compute-1.amazonaws.com | ||||||
| NS | ns4.csof.net | ||||||
| A | 52.20.19.77🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-52-20-19-77.compute-1.amazonaws.com | ||||||
| MX | mx1.ctb9.com ⭐ | ||||||
| A | 46.4.12.146🇩🇪 Hetzner46.4.0.0/16 HETZNER-RZ-FKS-BLK3 | ||||||
| PTR | static.146.12.4.46.clients.your-server.de | ||||||
| MX | mx2.ctb9.com ⭐ | ||||||
| A | 46.4.10.173🇩🇪 Hetzner46.4.0.0/16 HETZNER-RZ-FKS-BLK3 | ||||||
| PTR | static.173.10.4.46.clients.your-server.de | ||||||
| TXT | v=spf1 include:_incspfcheck.mailspike.net ?all | ||||||
| SOA | ns1.ctb9.comhostmaster@ctb9.com serial=1778595866 | ||||||
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=1778616231 | ||||||
Subdomains
Same first word
ctb9.com |
Similar names
DNS History
8 records (8 active, 0 former)
●NSns1.ctb9.com2026-05-12 → 2026-05-12 · 2 obs
● 2026-05-12 20:13:18
●MXmx1.ctb9.com2026-02-23 → 2026-05-12 · 2 obs
● 2026-05-12 20:13:18
●MXmx2.ctb9.com2026-02-23 → 2026-05-12 · 2 obs
● 2026-05-12 20:13:18
●A34.229.166.502026-02-23 → 2026-05-12 · 2 obs
● 2026-05-12 20:13:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| ctb9.com | ns1.csof.net, ns2.csof.net, ns4.csof.net, ns3.csof.net | - |
✅ Authoritative Response
Server:18.205.186.231
NS records: ns1.csof.net, ns2.csof.net, ns4.csof.net, ns3.csof.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctb9.com (unsigned zone)
⏱️ Timing
Total: 878ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 34.229.166.50 |
| NS | 4 | ns2.csof.net, ns4.csof.net... |
| MX | 2 | mx2.ctb9.com (pri: 10), mx1.ctb9.com (pri: 10) |
| TXT | 1 | v=spf1 include:_incspfcheck.mailspike.ne |
| SOA | 1 | ns1.ctb9.com hostmaster.ctb9.com |
Analysis
Hierarchy
ctb9.com is a parent of mx2.ctb9.com and mx1.ctb9.com.
IP Addresses
ctb9.com resolves to one IP number: 34.229.166.50.
other host names including www.69234f9b18c0b4d572dc553dbfdb8f52.com, www.eb241bfa7ab93a7ffdf5bc188fb3e28f.com, xlvddtbgobmrrmmlirjl.com, 2ff38f46275b380ca087ce5e16c13dde.net and vaudbyjvvlbwlgjwcgem.com share IP numbers with ctb9.com.
Name Servers
ctb9.com is delegated to five name servers: ns1.ctb9.com, ns1.csof.net, ns2.csof.net, ns3.csof.net and ns4.csof.net.
ctb9.com at least partially shares name servers with other domains, for instance fv7sp.com, e1b49dc827ab7b74a4860264ce34e465.com, blemblem.us, aa306f7ca3f25103333c39f0332e050e.info and iajywcw.cc.
Host names with a single IP address: The host name ns1.ctb9.com points to 18.205.186.231. The host name ns1.csof.net points to 18.205.186.231. The host name ns2.csof.net points to 23.21.178.27. The host name ns3.csof.net points to 3.214.185.54. The host name ns4.csof.net points to 52.20.19.77. Host names that point to 18.205.186.231: ns1.ctb9.com and ns1.csof.net.
Mail Servers
Two mail servers handle ctb9.com: mx1.ctb9.com and mx2.ctb9.com.
Host names with one IP number:
mx1.ctb9.com points to 46.4.12.146
mx2.ctb9.com points to 46.4.10.173