computersecurityclass.com - robtex.com
computersecurityclass.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 128.135.11.239🇺🇸 UCHICAGO-1128.135.0.0/16 The University of Chicago | ||||||
| NS | ns1.dreamhost.com ⭐ | ||||||
| A | 162.159.26.14Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.dreamhost.com | ||||||
| NS | ns2.dreamhost.com | ||||||
| A | 162.159.26.81Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.dreamhost.com | ||||||
| NS | ns3.dreamhost.com | ||||||
| A | 162.159.27.84Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.dreamhost.com | ||||||
| SOA | ns1.dreamhost.comhostmaster@dreamhost.com 2025-09-23 #0 | ||||||
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=1790768519 | ||||||
Same first word
computersecurityclass.com |
Previous names
Next names
DNS History
6 records (4 active, 2 former)
○NSlocalhost.localdomain2015-08-09 → 2017-03-28 · 4 obs
● 2017-03-28 11:43:06
○ 2026-09-07 16:56:08
○ 2026-09-30 11:53:16
●NSns1.dreamhost.com2026-09-07 → 2026-09-30 · 3 obs
● 2026-09-07 16:56:08
● 2026-09-30 11:53:16
●NSns2.dreamhost.com2026-09-07 → 2026-09-30 · 3 obs
● 2026-09-07 16:56:08
● 2026-09-30 11:53:16
●NSns3.dreamhost.com2026-09-07 → 2026-09-30 · 3 obs
● 2026-09-07 16:56:08
● 2026-09-30 11:53:16
●A128.135.11.2392026-09-07 → 2026-09-30 · 3 obs
● 2026-09-07 16:56:08
● 2026-09-30 11:53:16
○A184.73.202.122015-08-09 → 2017-03-28 · 4 obs
● 2017-03-28 11:43:06
○ 2026-09-07 16:56:08
○ 2026-09-30 11:53:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| computersecurityclass.com | ns1.dreamhost.com, ns2.dreamhost.com, ns3.dreamhost.com | 3 records |
✅ Authoritative Response
Server:162.159.27.84
NS records: ns1.dreamhost.com, ns2.dreamhost.com, ns3.dreamhost.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for computersecurityclass.com (unsigned zone)
⏱️ Timing
Total: 323ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 128.135.11.239 |
| NS | 3 | ns1.dreamhost.com, ns3.dreamhost.com... |
| SOA | 1 | ns1.dreamhost.com hostmaster.dreamhost.c |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.dreamhost.com, ns2.dreamhost.com, ns3.dreamhost.com)
Analysis
IP Addresses
computersecurityclass.com has exactly one IP address — 128.135.11.239.
privacyart.net, midwestsecurityworkshop.com, www.midwestsecurityworkshop.com plus two other host names have IP numbers in common with computersecurityclass.com.
Name Servers
Three name servers are authoritative for computersecurityclass.com: ns1.dreamhost.com, ns2.dreamhost.com and ns3.dreamhost.com.
The name servers of computersecurityclass.com overlap at least partially with those of other domains — among them sageblossomevents.com, samdevine.com, nasonproductions.com and two more.
Three hostnames, one IP address apiece: ns1.dreamhost.com resolves to 162.159.26.14, ns2.dreamhost.com resolves to 162.159.26.81 and ns3.dreamhost.com resolves to 162.159.27.84.