koh-ken.com - robtex.com
koh-ken.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 162.43.105.125🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc. | ||||||
| PTR | sv744.xbiz.ne.jp | ||||||
| NS | ns1.xbiz.ne.jp ⭐ | ||||||
| A | 157.112.182.247🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc. | ||||||
| PTR | ns1.xbiz.ne.jp | ||||||
| NS | ns2.xbiz.ne.jp | ||||||
| A | 35.76.79.244🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix | ||||||
| PTR | ns2.xbiz.ne.jp | ||||||
| NS | ns3.xbiz.ne.jp | ||||||
| A | 157.112.191.237🇯🇵 XSERVER-AS157.112.184.0/21 XSERVER Inc. | ||||||
| PTR | ns3.xbiz.ne.jp | ||||||
| MX | koh-ken.com ⭐ | ||||||
| A | 162.43.105.125🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc. | ||||||
| PTR | sv744.xbiz.ne.jp | ||||||
| TXT | google-site-verification=n-ypuahjQmqjBteFiot2sxjU3rpB3KER56hr4QdS63M | ||||||
| TXT | v=spf1 +a:sv744.xbiz.ne.jp +a:koh-ken.com +mx include:spf.sender.xserver.jp ~all | ||||||
| SOA | ns1.xbiz.ne.jproot@xbiz.ne.jp serial=0 | ||||||
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=1774598772 | ||||||
MX for
koh-ken.com |
Same first word
Similar names
DNS History
8 records (5 active, 3 former)
○NS01.dnsv.jp2015-08-15 → 2017-11-24 · 4 obs
● 2017-11-24 17:54:40
○ 2026-02-22 20:57:56
○ 2026-03-27 08:22:12
○NS02.dnsv.jp2015-08-15 → 2017-11-24 · 4 obs
● 2017-11-24 17:54:40
○ 2026-02-22 20:57:56
○ 2026-03-27 08:22:12
●NSns1.xbiz.ne.jp2026-02-22 → 2026-03-27 · 3 obs
● 2026-02-22 20:57:56
● 2026-03-27 08:22:12
●NSns2.xbiz.ne.jp2026-02-22 → 2026-03-27 · 3 obs
● 2026-02-22 20:57:56
● 2026-03-27 08:22:12
●NSns3.xbiz.ne.jp2026-02-22 → 2026-03-27 · 3 obs
● 2026-02-22 20:57:56
● 2026-03-27 08:22:12
●MXkoh-ken.com2026-02-22 → 2026-03-27 · 3 obs
● 2026-02-22 20:57:56
● 2026-03-27 08:22:12
○MXmailforward.dnsv.jp2015-08-15 → 2017-11-24 · 4 obs
● 2017-11-24 17:54:40
○ 2026-02-22 20:57:56
○ 2026-03-27 08:22:12
●A162.43.105.1252026-02-22 → 2026-03-27 · 2 obs
● 2026-03-27 08:22:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| koh-ken.com | ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp | - |
✅ Authoritative Response
Server:35.76.79.244
NS records: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for koh-ken.com (unsigned zone)
⏱️ Timing
Total: 910ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.43.105.125 |
| NS | 3 | ns3.xbiz.ne.jp, ns1.xbiz.ne.jp... |
| MX | 1 | koh-ken.com (pri: 0) |
| TXT | 2 | google-site-verification=n-ypuahjQmqjBte, v=spf1 +a:sv744.xbiz.ne.jp +a:koh-ken.co |
| SOA | 1 | ns1.xbiz.ne.jp root.xbiz.ne.jp |
Analysis
Mail Server Role
koh-ken.com serves as the mail server for koh-ken.com.
IP Addresses
koh-ken.com resolves to one IP number: 162.43.105.125.
Other host names, for instance www.cattleya.club, sv744.xbiz.ne.jp, www.ntt-atcr.co.jp, a-shin.jp and private-skin.clinic share IP numbers with koh-ken.com.
Name Servers
koh-ken.com is delegated to three name servers: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp and ns3.xbiz.ne.jp.
koh-ken.com at least partially shares name servers with other domains, including jjbd.co.jp, hashi-net.com, gyu1.com, k-kenshou.co.jp and kendenki.com.
Host names with a single IP:
ns1.xbiz.ne.jp points to 157.112.182.247; ns2.xbiz.ne.jp points to 35.76.79.244; ns3.xbiz.ne.jp points to 157.112.191.237.
Mail Servers
koh-ken.com is handled by a single mail server, koh-ken.com.
Host name koh-ken.com resolves to a single IP: 162.43.105.125.