13b.co - robtex.com
13b.co
| DNSSEC | ⚠️ Not signed | ||||||
| A | 18.206.193.214🇺🇸 Amazon18.204.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-18-206-193-214.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 | ||||||
| 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 | ||||||
| MX | mx1.13b.co ⭐ | ||||||
| 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 | mx2.13b.co ⭐ | ||||||
| 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 | ns4.csof.nethostmaster@13b.co serial=1773070161 | ||||||
co
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.registrydns.co 🔒 | ||||||
| NS | b.registrydns.co 🔒 | ||||||
| NS | c.registrydns.co 🔒 | ||||||
| NS | d.registrydns.co 🔒 | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1759588016 | ||||||
Subdomains
Same first word
Similar names
DNS History
7 records (7 active, 0 former)
●MXmx1.13b.co2026-02-17 → 2026-03-09 · 2 obs
● 2026-03-09 15:30:14
●MXmx2.13b.co2026-02-17 → 2026-03-09 · 2 obs
● 2026-03-09 15:30:14
●A18.206.193.2142026-02-17 → 2026-03-09 · 2 obs
● 2026-03-09 15:30:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co | - |
| 13b.co | ns2.csof.net, ns3.csof.net, ns4.csof.net, ns1.csof.net | - |
✅ Authoritative Response
Server: 3.214.185.54
NS records: ns2.csof.net, ns3.csof.net, ns4.csof.net, ns1.csof.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 13b.co (unsigned zone)
⏱️ Timing
Total: 901ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 18.206.193.214 |
| NS | 4 | ns2.csof.net, ns3.csof.net... |
| MX | 2 | mx1.13b.co (pri: 10), mx2.13b.co (pri: 10) |
| TXT | 1 | v=spf1 include:_incspfcheck.mailspike.ne |
| SOA | 1 | ns4.csof.net hostmaster.13b.co |
Analysis
Hierarchy
13b.co is the parent of mx1.13b.co and mx2.13b.co.
IP Addresses
13b.co points to an IP address: 18.206.193.214.
other host names include tiscali.buzz, c7d55791f1cfae3a0cd7a40e1b4853ca.info, www.93e67aa0ac5f749e351c1f98e22c2ee8.com, www.53b081369b44b4dc436d5d6294c36e46.org and 9cd5b8980abaf59108f781db9c96208a.com; they share IP numbers with 13b.co.
Name Servers
13b.co delegates to four name servers: ns1.csof.net, ns2.csof.net, ns3.csof.net and ns4.csof.net.
13b.co at least partially shares name servers with other domains, for instance parc-vista.orl.ygnition.net, 79ce6bbe968c7545bf83e426c03874b8.com, 9db4464294964183645de63007222cbd.com, 3563b558534b8159c043ddff15315151.today and fdpahrjbhh.com.
These name servers are commonly used with the following: ns5.csof.net, ns6.csof.net, ns7.csof.net and ns8.csof.net.
Host names with one IP number: ns1.csof.net points to: 18.205.186.231; ns2.csof.net points to: 23.21.178.27; ns3.csof.net points to: 3.214.185.54; ns4.csof.net points to: 52.20.19.77.
Mail Servers
13b.co is handled by two mail servers: mx1.13b.co and mx2.13b.co.
Host names with one IP:
mx1.13b.co points to: 46.4.12.146
mx2.13b.co points to: 46.4.10.173