ryugakusei.com - robtex.com

ryugakusei.com

DNSSEC⚠️ Not signed
A157.7.44.229🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan
PTRusers264.vip.heteml.jp
NSdns0.heteml.jp
A157.7.44.53🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan
PTRdns510.heteml.jp
NSdns1.heteml.jp
A157.7.188.149🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan
PTRdns711.phy.heteml.jp
MXmx-proxy501.heteml.jp
A157.7.189.17🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan
MXmx-proxy502.heteml.jp(20)
A157.7.189.18🇯🇵 GMO-INTERNET157.7.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan
TXTv=spf1 include:_spf.heteml.jp ~all
SOAdns0.heteml.jphostmaster@ryugakusei.com serial=1784466978

com

Subdomains

Same first word

DNS History

6 records (5 active, 1 former)

20162017201820192020202120222023202420252026NSdns0.heteml.jpdns1.heteml.jpMXmx-proxy501.heteml.jpmx-proxy502.heteml.jpA157.7.44.229157.7.189.147
NSdns0.heteml.jp2015-07-17 → 2026-07-19 · 2 obs
● 2015-07-17 21:12:58
● 2026-07-19 14:41:24
NSdns1.heteml.jp2015-07-17 → 2026-07-19 · 2 obs
● 2015-07-17 21:12:58
● 2026-07-19 14:41:24
MXmx-proxy501.heteml.jp2015-07-17 → 2026-07-19 · 2 obs
● 2015-07-17 21:12:58
● 2026-07-19 14:41:24
MXmx-proxy502.heteml.jp2015-07-17 → 2026-07-19 · 2 obs
● 2015-07-17 21:12:58
● 2026-07-19 14:41:24
A157.7.189.1472015-07-17 → 2016-11-28 · 4 obs
● 2015-07-17 21:12:58
● 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
○ 2016-11-28 14:42:28
● 2026-03-26 14:17:42
● 2026-07-19 14:41:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net...-
ryugakusei.comdns0.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

TypeCountSample Data
A1157.7.44.229
NS2dns1.heteml.jp, dns0.heteml.jp
MX2mx-proxy501.heteml.jp (pri: 10), mx-proxy502.heteml.jp (pri: 20)
TXT1v=spf1 include:_spf.heteml.jp ~all
SOA1dns0.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.