cu-tech.net - dns.ninja
cu-tech.net
net
| 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=1786195434 | ||||||
MX for
cu-tech.net |
Subdomains
*.cu-tech.net |
Same first word
DNS History
11 records (7 active, 4 former)
○NSns1.value-domain.com2015-09-01 → 2016-07-11 · 4 obs
● 2016-07-11 10:40:36
○ 2017-03-18 07:06:42
○ 2026-08-08 13:47:38
●NSns1.xserver.jp2017-03-18 → 2026-08-08 · 3 obs
● 2017-03-18 07:06:42
● 2026-08-08 13:47:38
○NSns2.value-domain.com2015-09-01 → 2016-07-11 · 4 obs
● 2016-07-11 10:40:36
○ 2017-03-18 07:06:42
○ 2026-08-08 13:47:38
●NSns2.xserver.jp2017-03-18 → 2026-08-08 · 3 obs
● 2017-03-18 07:06:42
● 2026-08-08 13:47:38
●NSns3.xserver.jp2017-03-18 → 2026-08-08 · 3 obs
● 2017-03-18 07:06:42
● 2026-08-08 13:47:38
●NSns4.xserver.jp2017-03-18 → 2026-08-08 · 3 obs
● 2017-03-18 07:06:42
● 2026-08-08 13:47:38
●NSns5.xserver.jp2017-03-18 → 2026-08-08 · 3 obs
● 2017-03-18 07:06:42
● 2026-08-08 13:47:38
●MXcu-tech.net2015-09-01 → 2026-08-08 · 2 obs
● 2026-08-08 13:47:38
●A183.181.83.32026-03-11 → 2026-08-08 · 3 obs
● 2026-03-11 16:46:36
● 2026-08-08 13:47:38
○A183.90.245.392017-03-18 → 2017-03-18 · 4 obs
● 2017-03-18 07:06:42
○ 2026-03-11 16:46:36
○ 2026-08-08 13:47:38
○A202.172.25.42015-09-01 → 2016-07-11 · 4 obs
● 2016-07-11 10:40:36
○ 2017-03-18 07:06:42
○ 2026-08-08 13:47:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| cu-tech.net | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:183.90.224.226
NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cu-tech.net (unsigned zone)
⏱️ Timing
Total: 1020ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 183.181.83.3 |
| NS | 5 | ns2.xserver.jp, ns4.xserver.jp... |
| MX | 1 | cu-tech.net (pri: 0) |
| TXT | 1 | v=spf1 +a:sv10002.xserver.jp +a:cu-tech. |
| SOA | 1 | ns1.xserver.jp root.sv0.xserver.jp |
Analysis
Hierarchy
*.cu-tech.net is a subdomain of cu-tech.net.
Mail Server Role
cu-tech.net acts as its own mail server.
IP Addresses
cu-tech.net points to a single IP number: 183.181.83.3.
Additional host names — geektrade.co.jp, sv10002.xserver.jp, kayyoshida.com and two others — share IP numbers with cu-tech.net.
Name Servers
Delegation for cu-tech.net is to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
The name servers of cu-tech.net overlap at least partially with those of other domains — among them kawakami-ironworks.com, godsend.jp, destiny-strike.com and two more.
These name servers commonly appear alongside the name servers ns4.xserver.jp and ns5.xserver.jp.
Host names with three IP numbers:
ns1.xserver.jp maps to three IP addresses: 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp maps to three IP addresses: 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp maps to three IP addresses: 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Host names pointing to a single IP address:
ns2.xserver.jp resolves to the IP address 35.72.43.26.
ns3.xserver.jp resolves to the IP address 202.226.36.247.
Mail Servers
cu-tech.net has a single mail server: cu-tech.net itself.
cu-tech.net resolves to 183.181.83.3 and no other IP number.