ryuko.co.jp - robtex.com
ryuko.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 60.43.219.245🇯🇵 OCN60.32.0.0/12 (AS4713) CIDR BLOCK 70 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN | ||||||
| PTR | ryuko.co.jp | ||||||
| NS | mwns1.customer.ne.jp ⭐ | ||||||
| A | 210.150.23.210🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE | ||||||
| NS | mwns2.customer.ne.jp | ||||||
| A | 202.17.152.183🇯🇵 InfoSphere202.17.128.0/19 INFOSPHERE | ||||||
| MX | ryuko.co.jp ⭐ | ||||||
| A | 60.43.219.245🇯🇵 OCN60.32.0.0/12 (AS4713) CIDR BLOCK 70 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN | ||||||
| PTR | ryuko.co.jp | ||||||
| TXT | v=spf1 a include:_spf.bizmw.com ~all | ||||||
| SOA | mwns1.customer.ne.jphost-plan-ac@ntt.com serial=1613954713 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
PTR for
MX for
ryuko.co.jp |
Same first word
Similar names
DNS History
11 records (4 active, 7 former)
●NSmwns1.customer.ne.jp2026-03-17 → 2026-03-22 · 3 obs
● 2026-03-17 17:38:24
● 2026-03-22 16:21:06
●NSmwns2.customer.ne.jp2026-03-17 → 2026-03-22 · 3 obs
● 2026-03-17 17:38:24
● 2026-03-22 16:21:06
○NSns-219.dns.jp-e1.cloudn-service.com2016-01-21 → 2016-12-20 · 5 obs
● 2016-01-21 19:04:04
● 2016-12-20 21:51:48
○ 2026-03-17 17:38:24
○ 2026-03-22 16:21:06
○NSns-220.dns.jp-w1.cloudn-service.com2016-01-21 → 2016-12-20 · 5 obs
● 2016-01-21 19:04:04
● 2016-12-20 21:51:48
○ 2026-03-17 17:38:24
○ 2026-03-22 16:21:06
○NSns-221.dns.us-e1.cloudn-service.com2016-01-21 → 2016-12-20 · 5 obs
● 2016-01-21 19:04:04
● 2016-12-20 21:51:48
○ 2026-03-17 17:38:24
○ 2026-03-22 16:21:06
○NSns1.secure.net2015-06-12 → 2015-11-19 · 4 obs
● 2015-11-19 02:27:34
○ 2016-01-21 19:04:04
○ 2026-03-22 16:21:06
○NSns2.secure.net2015-06-12 → 2015-11-19 · 4 obs
● 2015-11-19 02:27:34
○ 2016-01-21 19:04:04
○ 2026-03-22 16:21:06
●MXryuko.co.jp2015-06-12 → 2026-03-22 · 2 obs
● 2026-03-22 16:21:06
○A101.110.202.1962015-06-12 → 2015-06-12 · 3 obs
○ 2015-09-10 16:47:40
○ 2026-03-22 16:21:06
●A60.43.219.2452026-03-17 → 2026-03-22 · 3 obs
● 2026-03-17 17:38:24
● 2026-03-22 16:21:06
○A61.126.33.1102015-09-10 → 2016-12-20 · 5 obs
● 2015-09-10 16:47:40
● 2016-12-20 21:51:48
○ 2026-03-17 17:38:24
○ 2026-03-22 16:21:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | g.dns.jp, h.dns.jp, a.dns.jp, e.dns.jp... | - |
| ryuko.co.jp | mwns1.customer.ne.jp, mwns2.customer.ne.jp | - |
✅ Authoritative Response
Server: 202.17.152.183
NS records: mwns1.customer.ne.jp, mwns2.customer.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ryuko.co.jp (unsigned zone)
⏱️ Timing
Total: 1519ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 60.43.219.245 |
| NS | 2 | mwns2.customer.ne.jp, mwns1.customer.ne.jp |
| MX | 1 | ryuko.co.jp (pri: 10) |
| TXT | 1 | v=spf1 a include:_spf.bizmw.com ~all |
| SOA | 1 | mwns1.customer.ne.jp host-plan-ac.ntt.co |
Analysis
Mail Server Role
ryuko.co.jp serves as the mail server for ryuko.co.jp.
IP Addresses
ryuko.co.jp points to IP number 60.43.219.245.
Name Servers
ryuko.co.jp is delegated to two name servers: mwns1.customer.ne.jp and mwns2.customer.ne.jp.
ryuko.co.jp uses the same name server setup as other domains such as td-logitem.jp, human-more.co.jp, tanimura.dr-clinic.jp, kyent.jp and fc-takaki.com.
Host names with one IP number:
mwns1.customer.ne.jp points to: 210.150.23.210.
mwns2.customer.ne.jp points to: 202.17.152.183.
Mail Servers
ryuko.co.jp is handled by a single mail server, ryuko.co.jp.
ryuko.co.jp points to a single IP: 60.43.219.245.