sizen-kenko.com - robtex.com
sizen-kenko.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=1776049372 | ||||||
MX for
sizen-kenko.com |
Subdomains
mx.sizen-kenko.com |
Same first word
sizen-kenko.com |
DNS History
8 records (7 active, 1 former)
●NSns1.xserver.jp2015-06-23 → 2026-04-13 · 2 obs
● 2026-04-13 03:29:40
●NSns2.xserver.jp2015-06-23 → 2026-04-13 · 2 obs
● 2026-04-13 03:29:40
●NSns3.xserver.jp2015-06-23 → 2026-04-13 · 2 obs
● 2026-04-13 03:29:40
●NSns4.xserver.jp2015-06-23 → 2026-04-13 · 2 obs
● 2026-04-13 03:29:40
●NSns5.xserver.jp2015-06-23 → 2026-04-13 · 2 obs
● 2026-04-13 03:29:40
●MXsizen-kenko.com2015-06-23 → 2026-04-13 · 2 obs
● 2026-04-13 03:29:40
●A202.226.39.1102026-04-12 → 2026-04-13 · 3 obs
● 2026-04-12 10:16:10
● 2026-04-13 03:29:40
○A219.94.203.1102015-06-23 → 2018-12-05 · 4 obs
● 2018-12-05 00:20:54
○ 2026-04-12 10:16:10
○ 2026-04-13 03:29:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| sizen-kenko.com | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp | - |
✅ Authoritative Response
Server:202.226.36.246
NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sizen-kenko.com (unsigned zone)
⏱️ Timing
Total: 1362ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.226.39.110 |
| NS | 5 | ns2.xserver.jp, ns1.xserver.jp... |
| MX | 1 | sizen-kenko.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv209.xserver.jp +a:sizen-kenk |
| SOA | 1 | ns1.xserver.jp root.sv0.xserver.jp |
Analysis
Hierarchy
sizen-kenko.com is a parent of mx.sizen-kenko.com.
Mail Server Role
sizen-kenko.com serves as the mail server for sizen-kenko.com.
IP Addresses
sizen-kenko.com points to a single IP address: 202.226.39.110.
Other host names such as yokohama-kouhokukanko.net, jobanshoji.com, nb-gr.jp, mees.jp and visitqr.net share IP numbers with sizen-kenko.com.
Name Servers
sizen-kenko.com is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.
At least part of the name servers for sizen-kenko.com are shared with other domains, for instance zummy.net, kaigoyobou.net, studsquad.net, smileboys.net and icloud.co.jp.
Host names with three IP numbers:
ns1.xserver.jp points to 202.226.36.164, 202.226.36.170 and 202.226.36.246.
ns4.xserver.jp points to 183.90.224.226, 183.90.224.230 and 202.226.39.247.
ns5.xserver.jp points to 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Host names with one IP number:
ns2.xserver.jp points to 35.72.43.26.
ns3.xserver.jp points to 202.226.36.247.
Mail Servers
Mail for sizen-kenko.com is handled by a single mail server, sizen-kenko.com.
Host sizen-kenko.com points to IP 202.226.39.110.