jukenkai.com - robtex.com
jukenkai.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.205.45🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| NS | ns2.namedserver.net ⭐ | ||||||
| A | 157.120.112.212🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.113.212🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.114.212🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K. | ||||||
| NS | ns.namedserver.net | ||||||
| A | 157.120.112.212🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.113.212🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.114.212🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K. | ||||||
| MX | mx.jukenkai.com ⭐ | ||||||
| A | 153.122.206.94🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| TXT | v=spf1 include:_spf.shared-server.net ~all | ||||||
| SOA | ns.namedserver.netroot@namedserver.net serial=5 | ||||||
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=1774465962 | ||||||
Previously NS for
jukenkai.com |
Subdomains
mx.jukenkai.com |
Same first word
jukenkai.com |
Similar names
njkuaike.com |
kenjukai.com |
enkakuji.com |
kejianku.com |
kejianku.com.cn |
kenjukai.jp |
jikuanke.com |
kenjukai.or.jp |
ekunjika.com |
DNS History
10 records (4 active, 6 former)
○NSjukenkai.com2015-08-08 → 2018-10-25 · 4 obs
● 2018-10-25 19:35:22
○ 2026-02-18 04:10:58
○ 2026-03-25 19:31:34
●NSns.namedserver.net2026-02-18 → 2026-03-25 · 3 obs
● 2026-02-18 04:10:58
● 2026-03-25 19:31:34
○NSns01.yahoowebhostinglight.jp2015-08-08 → 2018-10-25 · 4 obs
● 2018-10-25 19:35:22
○ 2026-02-18 04:10:58
○ 2026-03-25 19:31:34
○NSns02.yahoowebhostinglight.jp2015-08-08 → 2018-10-25 · 4 obs
● 2018-10-25 19:35:22
○ 2026-02-18 04:10:58
○ 2026-03-25 19:31:34
●NSns2.namedserver.net2026-02-18 → 2026-03-25 · 3 obs
● 2026-02-18 04:10:58
● 2026-03-25 19:31:34
●MXmx.jukenkai.com2026-02-18 → 2026-03-25 · 3 obs
● 2026-02-18 04:10:58
● 2026-03-25 19:31:34
○MXvgw02.yahoowebhostinglight.jp2015-08-08 → 2018-10-25 · 4 obs
● 2018-10-25 19:35:22
○ 2026-02-18 04:10:58
○ 2026-03-25 19:31:34
○MXvrgw.yahoowebhostinglight.jp2015-08-08 → 2018-10-25 · 4 obs
● 2018-10-25 19:35:22
○ 2026-02-18 04:10:58
○ 2026-03-25 19:31:34
●A153.122.205.452026-02-18 → 2026-03-25 · 3 obs
● 2026-02-18 04:10:58
● 2026-03-25 19:31:34
○A202.218.79.742015-08-08 → 2018-10-25 · 4 obs
● 2018-10-25 19:35:22
○ 2026-02-18 04:10:58
○ 2026-03-25 19:31:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| jukenkai.com | ns.namedserver.net, ns2.namedserver.net | - |
✅ Authoritative Response
Server:157.120.113.212
NS records: ns.namedserver.net, ns2.namedserver.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jukenkai.com (unsigned zone)
⏱️ Timing
Total: 765ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.122.205.45 |
| NS | 2 | ns2.namedserver.net, ns.namedserver.net |
| MX | 1 | mx.jukenkai.com (pri: 100) |
| TXT | 1 | v=spf1 include:_spf.shared-server.net ~a |
| SOA | 1 | ns.namedserver.net root.namedserver.net |
Analysis
Hierarchy
mx.jukenkai.com has jukenkai.com as its parent.
IP Addresses
jukenkai.com maps to IP address 153.122.205.45.
Other host names, for instance tanashijinja.or.jp, living-kaburagi.net, pinon.co.jp, 0120815158.com and www.good24.jp share IP numbers with jukenkai.com.
Name Servers
Two name servers ns2.namedserver.net and ns.namedserver.net are delegated to jukenkai.com.
jukenkai.com uses the same name server configuration as other domains, such as sub0000529204.hmk-temp.com, 50.42.122.153.in-addr.arpa, sub0000544711.hmk-temp.com, 246.90.125.211.in-addr.arpa and katayama.jp.
Host names with three IP numbers
ns2.namedserver.net points to: 157.120.112.212, 157.120.113.212 and 157.120.114.212
ns.namedserver.net points to: 157.120.112.212, 157.120.113.212 and 157.120.114.212
Note that ns2.namedserver.net and ns.namedserver.net both point to the same three IPs: 157.120.112.212, 157.120.113.212 and 157.120.114.212
Names pointing to 157.120.112.212: ns2.namedserver.net and ns.namedserver.net
Names pointing to 157.120.113.212: ns2.namedserver.net and ns.namedserver.net
Names pointing to 157.120.114.212: ns2.namedserver.net and ns.namedserver.net
Mail Servers
jukenkai.com is handled by a single mail server, mx.jukenkai.com.
mx.jukenkai.com points to one IP number: 153.122.206.94.