ostsg.com - robtex.com
ostsg.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 52.16.171.153🇮🇪 Amazon52.16.0.0/15 EC2 DUB prefix | ||||||
| PTR | ec2-52-16-171-153.eu-west-1.compute.amazonaws.com | ||||||
| NS | ns1.ostsg.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.ostsg.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.ostsg.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.ostsg.comhostmaster@ostsg.com serial=1778775265 | ||||||
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=1778793506 | ||||||
Same first word
Similar names
DNS History
8 records (8 active, 0 former)
●NSns1.ostsg.com2026-05-08 → 2026-05-14 · 2 obs
● 2026-05-14 21:19:52
●MXmx1.ostsg.com2026-05-08 → 2026-05-14 · 2 obs
● 2026-05-14 21:19:52
●MXmx2.ostsg.com2026-05-08 → 2026-05-14 · 2 obs
● 2026-05-14 21:19:52
●A52.16.171.1532026-05-08 → 2026-05-14 · 2 obs
● 2026-05-14 21:19:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, e.gtld-servers.net, d.gtld-servers.net, m.gtld-servers.net... | - |
| ostsg.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 ostsg.com (unsigned zone)
⏱️ Timing
Total: 622ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 52.16.171.153 |
| NS | 4 | ns3.csof.net, ns1.csof.net... |
| MX | 2 | mx2.ostsg.com (pri: 10), mx1.ostsg.com (pri: 10) |
| TXT | 1 | v=spf1 include:_incspfcheck.mailspike.ne |
| SOA | 1 | ns1.ostsg.com hostmaster.ostsg.com |
Analysis
IP Addresses
ostsg.com points to a single IP number: 52.16.171.153.
other host names for instance aacab797329b4327.top, idvvajlgdsdqoqleosyo.com, www.3248b5708f4b64dc9526bc702a7c2d9a.com, oooogwpqmhdatgfhdlue.com and rdiywdullceprsvveewp.com share IP numbers with ostsg.com.
Name Servers
ostsg.com is delegated to five name servers: ns1.ostsg.com, ns1.csof.net, ns2.csof.net, ns3.csof.net and ns4.csof.net.
ostsg.com at least partially shares name servers with other domains, for instance 1efb8dcab6041472bd1bd883813ab105.info, mtzwb2pcstlmsedgzgz.xyz, 0dd23329d5574576590948ecc54c5430.com, wifelady.net and fc31adaaa3ee60302925ef0a59e10dc4.info.
These name servers are commonly used with ns5.csof.net, ns6.csof.net, ns7.csof.net and ns8.csof.net.
Hostnames with a single IP:
Hostname ns1.ostsg.com resolves to 18.205.186.231.
Hostname ns1.csof.net resolves to 18.205.186.231.
Hostname ns2.csof.net resolves to 23.21.178.27.
Hostname ns3.csof.net resolves to 3.214.185.54.
Hostname ns4.csof.net resolves to 52.20.19.77.
Hostnames resolving to 18.205.186.231: ns1.ostsg.com and ns1.csof.net.
Mail Servers
ostsg.com is handled by two mail servers: mx1.ostsg.com and mx2.ostsg.com.
Host names with one IP number:
The host mx1.ostsg.com points to 46.4.12.146 and the host mx2.ostsg.com points to 46.4.10.173.