kernel1991.co.jp - robtex.com
kernel1991.co.jp
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
MX for
kernel1991.co.jp |
Subdomains
www.kernel1991.co.jp |
Same first word
kernel1991.co.jp |
DNS History
11 records (7 active, 4 former)
○NSdns.jnetstation.com2018-09-25 → 2018-09-25 · 2 obs
○ 2026-03-25 10:08:58
○NSns1.jnetstation.com2018-09-25 → 2018-09-25 · 2 obs
○ 2026-03-25 10:08:58
●NSns1.xserver.jp2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 10:08:58
●NSns2.xserver.jp2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 10:08:58
●NSns3.xserver.jp2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 10:08:58
●NSns4.xserver.jp2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 10:08:58
●NSns5.xserver.jp2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 10:08:58
○MXavgate.jnetstation.com2018-09-25 → 2018-09-25 · 2 obs
○ 2026-03-25 10:08:58
●MXkernel1991.co.jp2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 10:08:58
●A162.43.101.1222026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 10:08:58
○A210.129.90.132018-09-25 → 2018-09-25 · 2 obs
○ 2026-03-25 10:08:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| kernel1991.co.jp | ns4.xserver.jp, ns5.xserver.jp, ns1.xserver.jp, ns2.xserver.jp... | 11 records |
✅ Authoritative Response
Server:183.90.224.230
NS records: ns4.xserver.jp, ns5.xserver.jp, ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kernel1991.co.jp (unsigned zone)
⏱️ Timing
Total: 740ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.43.101.122 |
| NS | 5 | ns4.xserver.jp, ns1.xserver.jp... |
| MX | 1 | kernel1991.co.jp (pri: 0) |
| TXT | 1 | v=spf1 +a:sv14921.xserver.jp +a:kernel19 |
| SOA | 1 | ns1.xserver.jp root.xserver.jp |
📌 Glue Records Collected
Total: 11
Out-of-bailiwick: 11 (ns1.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)
Analysis
Hierarchy
The parent of www.kernel1991.co.jp is kernel1991.co.jp.
Mail Server Role
kernel1991.co.jp serves as a mail server for kernel1991.co.jp.
IP Addresses
kernel1991.co.jp points to a single IP: 162.43.101.122.
Other host names, for instance wakatsuki-chukousho.jp, terroirum.com, kohakucat.com, suzukizouen.com and bosei-archive.com share IP numbers with kernel1991.co.jp.
Name Servers
kernel1991.co.jp is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.
kernel1991.co.jp partially shares name servers with other domains; examples include tdailab.com, edopon-test.com, clr-guide.com, kitagawara.com and e-nakasyo.com.
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
kernel1991.co.jp is handled by a single mail server, kernel1991.co.jp.
kernel1991.co.jp points to a single IP: 162.43.101.122.