tetsu.com - dns.ninja
tetsu.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=1786675269 | ||||||
MX for
tetsu.com |
Subdomains
mail.tetsu.com |
Same first word
tetsu.org |
tetsu.co.jp |
tetsu.jp |
tetsu.com.br |
tetsu.de |
tetsu.live |
tetsu.se |
tetsu.com |
tetsu.be |
tetsu.biz |
tetsu.name |
tetsu.info |
tetsu.com.au |
tetsu.co.uk |
Similar names
DNS History
8 records (7 active, 1 former)
●NSns1.xserver.jp2015-07-26 → 2026-08-14 · 2 obs
● 2026-08-14 02:55:14
●NSns2.xserver.jp2015-07-26 → 2026-08-14 · 2 obs
● 2026-08-14 02:55:14
●NSns3.xserver.jp2015-07-26 → 2026-08-14 · 2 obs
● 2026-08-14 02:55:14
●NSns4.xserver.jp2015-07-26 → 2026-08-14 · 2 obs
● 2026-08-14 02:55:14
●NSns5.xserver.jp2015-07-26 → 2026-08-14 · 2 obs
● 2026-08-14 02:55:14
●MXtetsu.com2015-07-26 → 2026-08-14 · 2 obs
● 2026-08-14 02:55:14
●A202.226.39.722026-03-01 → 2026-08-14 · 3 obs
● 2026-03-01 06:05:40
● 2026-08-14 02:55:14
○A219.94.203.722015-07-26 → 2017-01-05 · 4 obs
● 2017-01-05 10:04:44
○ 2026-03-01 06:05:40
○ 2026-08-14 02:55:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, j.gtld-servers.net... | - |
| tetsu.com | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | - |
✅ Authoritative Response
Server:202.226.36.247
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 tetsu.com (unsigned zone)
⏱️ Timing
Total: 2032ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.226.39.72 |
| NS | 5 | ns2.xserver.jp, ns3.xserver.jp... |
| MX | 1 | tetsu.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv371.xserver.jp +a:tetsu.com |
| SOA | 1 | ns1.xserver.jp root.sv0.xserver.jp |
Analysis
Hierarchy
tetsu.com is a parent domain of mail.tetsu.com.
Mail Server Role
The MX record for tetsu.com points back to tetsu.com — it is its own mail server.
IP Addresses
tetsu.com directs to one IP number, which is 202.226.39.72.
Among the host names that share IP numbers with tetsu.com are sei-tai-in.com, komeshina.com, ohenro.com and two others.
Name Servers
The authoritative name servers for tetsu.com are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
tetsu.com shares at least some of its name servers with other domains, including sleep.co.jp, yumeijin-niowase.com, cleaning-teacher.com and two others.
These name servers are frequently paired with the name servers ns4.xserver.jp and ns5.xserver.jp.
Hosts with three IP address records:
ns1.xserver.jp resolves to three addresses: 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp resolves to three addresses: 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp resolves to three addresses: 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Hosts that resolve to one IP address:
ns2.xserver.jp points to the IP address 35.72.43.26.
ns3.xserver.jp points to the IP address 202.226.36.247.
Mail Servers
The MX record for tetsu.com points to a single mail server: tetsu.com.
There is one IP number for tetsu.com: 202.226.39.72.