ryugakusei.com - robtex.com
ryugakusei.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.7.44.229🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users264.vip.heteml.jp | ||||||
| NS | dns0.heteml.jp ⭐ | ||||||
| A | 157.7.44.53🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | dns510.heteml.jp | ||||||
| NS | dns1.heteml.jp | ||||||
| A | 157.7.188.149🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | dns711.phy.heteml.jp | ||||||
| MX | mx-proxy501.heteml.jp ⭐ | ||||||
| A | 157.7.189.17🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| MX | mx-proxy502.heteml.jp(20) | ||||||
| A | 157.7.189.18🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| TXT | v=spf1 include:_spf.heteml.jp ~all | ||||||
| SOA | dns0.heteml.jphostmaster@ryugakusei.com serial=1784466978 | ||||||
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=1784470862 | ||||||
Subdomains
www.ryugakusei.com |
Same first word
ryugakusei.net |
ryugakusei.com |
DNS History
6 records (5 active, 1 former)
●MXmx-proxy501.heteml.jp2015-07-17 → 2026-07-19 · 2 obs
● 2026-07-19 14:41:24
●MXmx-proxy502.heteml.jp2015-07-17 → 2026-07-19 · 2 obs
● 2026-07-19 14:41:24
○A157.7.189.1472015-07-17 → 2016-11-28 · 4 obs
● 2016-11-28 14:42:28
○ 2026-03-26 14:17:42
○ 2026-07-19 14:41:24
●A157.7.44.2292026-03-26 → 2026-07-19 · 3 obs
● 2026-03-26 14:17:42
● 2026-07-19 14:41:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net... | - |
| ryugakusei.com | dns0.heteml.jp, dns1.heteml.jp | - |
✅ Authoritative Response
Server:157.7.44.53
NS records: dns0.heteml.jp, dns1.heteml.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ryugakusei.com (unsigned zone)
⏱️ Timing
Total: 867ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.7.44.229 |
| NS | 2 | dns1.heteml.jp, dns0.heteml.jp |
| MX | 2 | mx-proxy501.heteml.jp (pri: 10), mx-proxy502.heteml.jp (pri: 20) |
| TXT | 1 | v=spf1 include:_spf.heteml.jp ~all |
| SOA | 1 | dns0.heteml.jp hostmaster.ryugakusei.com |
Analysis
Hierarchy
ryugakusei.com is the parent zone for www.ryugakusei.com.
IP Addresses
ryugakusei.com points to a single IP number: 157.7.44.229.
Additional host names — kenichirou.net, www.picsor.net, ns02.kikkahanten.com and two others — share IP numbers with ryugakusei.com.
Name Servers
Two name servers handle the delegation for ryugakusei.com: dns0.heteml.jp and dns1.heteml.jp.
ryugakusei.com shares its name server setup with other domains, including mebuki.net, oh-ya.co.jp, groove1.net and two others.
ryugakusei.com is at least partially co-delegated on name servers with other domains, such as sakura-wedding.com.
dns0.heteml.jp resolves to 157.7.44.53. dns1.heteml.jp resolves to 157.7.188.149. Both host names point to a single IP number.
Mail Servers
ryugakusei.com has two mail servers: mx-proxy501.heteml.jp and mx-proxy502.heteml.jp.
ryugakusei.com shares the same mail server setup as other domains, including eurolive.jp, hacoyadesign.com, marcosweskamp.com and two others.
ryugakusei.com uses mail servers that are also used by other domains, including sakata-kankou.com, globe-antiques.com and littleamerica.co.jp.
mx-proxy501.heteml.jp resolves to 157.7.189.17. mx-proxy502.heteml.jp resolves to 157.7.189.18. Both host names point to a single IP number.