cpu4u.com - robtex.com
cpu4u.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=1771291435 | ||||||
Subdomains
www.cpu4u.com |
Same first word
DNS History
10 records (5 active, 5 former)
●NSns41.domaincontrol.com2007-10-23 → 2026-03-23 · 2 obs
● 2026-03-23 13:14:50
●NSns42.domaincontrol.com2007-10-23 → 2026-03-23 · 2 obs
● 2026-03-23 13:14:50
●MXcpu4u-com.mail.protection.outlook.com2026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 13:14:50
○MXmailstore1.secureserver.net2007-10-23 → 2021-06-19 · 3 obs
● 2021-06-19 08:17:16
○ 2026-03-23 13:14:50
○MXsmtp.secureserver.net2007-10-23 → 2021-06-19 · 3 obs
● 2021-06-19 08:17:16
○ 2026-03-23 13:14:50
●A13.248.243.52026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 13:14:50
○A208.109.135.2222007-10-23 → 2007-10-23 · 3 obs
○ 2015-08-27 19:41:54
○ 2026-03-23 13:14:50
○A72.167.132.1142015-08-27 → 2017-06-13 · 5 obs
● 2015-08-27 19:41:54
● 2017-06-13 07:34:52
○ 2021-06-19 08:17:16
○ 2026-03-23 13:14:50
○A72.167.191.692021-06-19 → 2021-06-19 · 3 obs
● 2021-06-19 08:17:16
○ 2026-03-23 13:14:50
●A76.223.105.2302026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 13:14:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| cpu4u.com | ns41.domaincontrol.com, ns42.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.68.21
NS records: ns41.domaincontrol.com, ns42.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cpu4u.com (unsigned zone)
⏱️ Timing
Total: 105ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.105.230, 13.248.243.5 |
| NS | 2 | ns41.domaincontrol.com, ns42.domaincontrol.com |
| MX | 1 | cpu4u-com.mail.protection.outlook.com (p |
| TXT | 2 | v=spf1 include:secureserver.net -all, NETORGFT10540284.onmicrosoft.com |
| SOA | 1 | ns41.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns41.domaincontrol.com, ns41.domaincontrol.com, ns42.domaincontrol.com...)
Analysis
Hierarchy
The parent of www.cpu4u.com is cpu4u.com.
IP Addresses
Two IP numbers are pointed to by cpu4u.com: 13.248.243.5 and 76.223.105.230.
other host names include thewizard.de, candlehire.com, artzella.com, aaposta.com and appraisenantucket.com; they share IP numbers with cpu4u.com.
Name Servers
Two name servers ns41.domaincontrol.com and ns42.domaincontrol.com handle the delegation for cpu4u.com.
cpu4u.com shares the same name server setup as other domains, for instance homanmachuca.com, forty31.com, maxblack.org, donnalcatalano.com and seradus.com.
cpu4u.com shares name servers with other domains at least partially, for instance stainedglassgrafx.net, e-tek.biz, withoutaspotorwrinkle.com and kinhdoanhx.com.
Host names with two IP numbers:
ns41.domaincontrol.com points to 2603:5:2142::15 and 97.74.100.21.
ns42.domaincontrol.com points to 2603:5:2242::15 and 173.201.68.21.
Mail Servers
cpu4u.com is handled by a single mail server, cpu4u-com.mail.protection.outlook.com.
Hostname cpu4u-com.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:c902::4, 2a01:111:f403:c92c::4, 2a01:111:f403:f903::, 2a01:111:f403:f908::2, 52.101.9.17, 52.101.41.4, 52.101.41.180 and 52.101.50.13.