nikogaku.com - robtex.com
nikogaku.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 153.122.205.52🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| NS | ns3.ymc.ne.jp ⭐ | ||||||
| A | 157.120.112.215🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.113.215🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.114.215🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K. | ||||||
| NS | ns4.ymc.ne.jp | ||||||
| A | 157.120.112.215🇯🇵 GMOHS-CL157.120.112.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.113.215🇯🇵 GMOHS-CL157.120.113.0/24 GMO GlobalSign Holdings K.K. | ||||||
| A | 157.120.114.215🇯🇵 GMOHS-CL157.120.114.0/24 GMO GlobalSign Holdings K.K. | ||||||
| MX | mx.nikogaku.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 | ns3.ymc.ne.jproot@ymc.ne.jp serial=2698676032 | ||||||
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=1774647827 | ||||||
Previously NS for
nikogaku.com |
Previously MX for
nikogaku.com |
Subdomains
mx.nikogaku.com |
Same first word
nikogaku.com |
Similar names
kongkuai.com |
kinokagu.com |
kinokagu.net |
kogakuin.info |
kogakuin.ac.jp |
kokiguan.es |
kuaikong.com.cn |
kogakuin.or.jp |
kogakuin.jp |
kinokagu.jp |
DNS History
10 records (4 active, 6 former)
○NSnikogaku.com2015-05-26 → 2017-12-25 · 4 obs
● 2017-12-25 19:52:12
○ 2026-03-04 22:38:10
○ 2026-03-27 21:50:50
○NSns2.ymc.ne.jp2015-05-26 → 2017-12-25 · 4 obs
● 2017-12-25 19:52:12
○ 2026-03-04 22:38:10
○ 2026-03-27 21:50:50
●NSns3.ymc.ne.jp2026-03-04 → 2026-03-27 · 3 obs
● 2026-03-04 22:38:10
● 2026-03-27 21:50:50
●NSns4.ymc.ne.jp2026-03-04 → 2026-03-27 · 3 obs
● 2026-03-04 22:38:10
● 2026-03-27 21:50:50
○NSrss40.ymc.ne.jp2015-05-26 → 2017-12-25 · 4 obs
● 2017-12-25 19:52:12
○ 2026-03-04 22:38:10
○ 2026-03-27 21:50:50
●MXmx.nikogaku.com2026-03-04 → 2026-03-27 · 3 obs
● 2026-03-04 22:38:10
● 2026-03-27 21:50:50
○MXnikogaku.com2015-05-26 → 2017-12-25 · 4 obs
● 2017-12-25 19:52:12
○ 2026-03-04 22:38:10
○ 2026-03-27 21:50:50
○MXns2.ymc.ne.jp2015-05-26 → 2017-12-25 · 4 obs
● 2017-12-25 19:52:12
○ 2026-03-04 22:38:10
○ 2026-03-27 21:50:50
●A153.122.205.522026-03-04 → 2026-03-27 · 3 obs
● 2026-03-04 22:38:10
● 2026-03-27 21:50:50
○A153.122.38.242015-05-26 → 2017-12-25 · 4 obs
● 2017-12-25 19:52:12
○ 2026-03-04 22:38:10
○ 2026-03-27 21:50:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| nikogaku.com | ns3.ymc.ne.jp, ns4.ymc.ne.jp | - |
✅ Authoritative Response
Server:157.120.112.215
NS records: ns3.ymc.ne.jp, ns4.ymc.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for nikogaku.com (unsigned zone)
⏱️ Timing
Total: 1037ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 153.122.205.52 |
| NS | 2 | ns4.ymc.ne.jp, ns3.ymc.ne.jp |
| MX | 1 | mx.nikogaku.com (pri: 100) |
| TXT | 1 | v=spf1 include:_spf.shared-server.net ~a |
| SOA | 1 | ns3.ymc.ne.jp root.ymc.ne.jp |
Analysis
Hierarchy
The parent of mx.nikogaku.com is nikogaku.com.
IP Addresses
nikogaku.com points to an IP address: 153.122.205.52.
other host names include sdh-method.jp, telecomtec.co.jp, yasaka.or.jp, n-senri.com and akenohoshi-clinic.jp; they share IP numbers with nikogaku.com.
Name Servers
Two name servers ns3.ymc.ne.jp and ns4.ymc.ne.jp handle the delegation for nikogaku.com.
nikogaku.com shares the same name server setup as other domains, for instance d-xeon.com, sumutoko.net, todokoro.com, ito-zouen.com and studioaun.jp.
nikogaku.com at least partially shares name servers with other domains, for instance ekami.net, nakano-shokai.com, hiropa.co.jp, suncreate1.com and emuai-kikaku.com.
Host names with three IP numbers:
ns3.ymc.ne.jp points to 157.120.112.215, 157.120.113.215 and 157.120.114.215
ns4.ymc.ne.jp points to 157.120.112.215, 157.120.113.215 and 157.120.114.215
Hosts that point to 157.120.112.215 are ns3.ymc.ne.jp and ns4.ymc.ne.jp
Hosts that point to 157.120.113.215 are ns3.ymc.ne.jp and ns4.ymc.ne.jp
Hosts that point to 157.120.114.215 are ns3.ymc.ne.jp and ns4.ymc.ne.jp
Mail Servers
nikogaku.com is handled by a single mail server, mx.nikogaku.com.
The host name mx.nikogaku.com points to IP 153.122.206.94.