kokensha.com - robtex.com
kokensha.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 162.43.105.157🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc. | ||||||
| PTR | sv816.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 | kokensha.com ⭐ | ||||||
| A | 162.43.105.157🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc. | ||||||
| PTR | sv816.xbiz.ne.jp | ||||||
| TXT | v=spf1 +a:sv816.xbiz.ne.jp +a:kokensha.com +mx include:spf.sender.xserver.jp ... | ||||||
| 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=1774640577 | ||||||
MX for
kokensha.com |
Same first word
Similar names
DNS History
15 records (5 active, 10 former)
○NSdns01.gmoserver.jp2015-08-04 → 2017-06-17 · 6 obs
○ 2015-11-26 19:52:20
○ 2016-09-16 21:54:42
● 2017-06-17 07:15:56
○ 2026-03-23 13:21:36
○ 2026-03-27 20:10:50
○NSdns02.gmoserver.jp2015-08-04 → 2017-06-17 · 6 obs
○ 2015-11-26 19:52:20
○ 2016-09-16 21:54:42
● 2017-06-17 07:15:56
○ 2026-03-23 13:21:36
○ 2026-03-27 20:10:50
●NSns1.xbiz.ne.jp2026-03-23 → 2026-03-27 · 3 obs
● 2026-03-23 13:21:36
● 2026-03-27 20:10:50
○NSns1.xserver.jp2015-11-26 → 2016-09-16 · 5 obs
● 2015-11-26 19:52:20
● 2016-09-16 21:54:42
○ 2017-06-17 07:15:56
○ 2026-03-27 20:10:50
●NSns2.xbiz.ne.jp2026-03-23 → 2026-03-27 · 3 obs
● 2026-03-23 13:21:36
● 2026-03-27 20:10:50
○NSns2.xserver.jp2015-11-26 → 2016-09-16 · 5 obs
● 2015-11-26 19:52:20
● 2016-09-16 21:54:42
○ 2017-06-17 07:15:56
○ 2026-03-27 20:10:50
●NSns3.xbiz.ne.jp2026-03-23 → 2026-03-27 · 3 obs
● 2026-03-23 13:21:36
● 2026-03-27 20:10:50
○NSns3.xserver.jp2015-11-26 → 2016-09-16 · 5 obs
● 2015-11-26 19:52:20
● 2016-09-16 21:54:42
○ 2017-06-17 07:15:56
○ 2026-03-27 20:10:50
○NSns4.xserver.jp2015-11-26 → 2016-09-16 · 5 obs
● 2015-11-26 19:52:20
● 2016-09-16 21:54:42
○ 2017-06-17 07:15:56
○ 2026-03-27 20:10:50
○NSns5.xserver.jp2015-11-26 → 2016-09-16 · 5 obs
● 2015-11-26 19:52:20
● 2016-09-16 21:54:42
○ 2017-06-17 07:15:56
○ 2026-03-27 20:10:50
●MXkokensha.com2015-11-26 → 2026-03-27 · 6 obs
● 2015-11-26 19:52:20
● 2016-09-16 21:54:42
○ 2017-06-17 07:15:56
● 2026-03-23 13:21:36
● 2026-03-27 20:10:50
○MXmx7.gmoserver.jp2015-08-04 → 2017-06-17 · 6 obs
○ 2015-11-26 19:52:20
○ 2016-09-16 21:54:42
● 2017-06-17 07:15:56
○ 2026-03-23 13:21:36
○ 2026-03-27 20:10:50
●A162.43.105.1572026-03-23 → 2026-03-27 · 3 obs
● 2026-03-23 13:21:36
● 2026-03-27 20:10:50
○A183.90.228.552015-11-26 → 2016-09-16 · 5 obs
● 2015-11-26 19:52:20
● 2016-09-16 21:54:42
○ 2017-06-17 07:15:56
○ 2026-03-27 20:10:50
○A210.172.183.412015-08-04 → 2017-06-17 · 6 obs
○ 2015-11-26 19:52:20
○ 2016-09-16 21:54:42
● 2017-06-17 07:15:56
○ 2026-03-23 13:21:36
○ 2026-03-27 20:10:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net... | - |
| kokensha.com | ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp | - |
✅ Authoritative Response
Server:157.112.191.237
NS records: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kokensha.com (unsigned zone)
⏱️ Timing
Total: 1102ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.43.105.157 |
| NS | 3 | ns3.xbiz.ne.jp, ns2.xbiz.ne.jp... |
| MX | 1 | kokensha.com (pri: 0) |
| TXT | 1 | v=spf1 +a:sv816.xbiz.ne.jp +a:kokensha.c |
| SOA | 1 | ns1.xbiz.ne.jp root.xbiz.ne.jp |
Analysis
Mail Server Role
kokensha.com serves as the mail server for kokensha.com.
IP Addresses
kokensha.com points to a single IP address: 162.43.105.157.
Other host names such as mail.autochem.co.jp, hachitaiji.com, dialogue.social, e-trader.jp and icett.or.jp share IP numbers with kokensha.com.
Name Servers
kokensha.com is delegated to three name servers: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp and ns3.xbiz.ne.jp.
At least part of the name servers for kokensha.com are shared with other domains, for instance chiasu.jp, yae-japan.com, ktzreform.com, callas.jp and tsukinoya-narita-ekimae.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
Mail for kokensha.com is handled by a single mail server, kokensha.com.
Host kokensha.com points to IP 162.43.105.157.