3riku.jp - robtex.com
3riku.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 180.131.140.46🇯🇵 AS131921180.131.140.0/22 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| PTR | ipponmatsu-hall.jp | ||||||
| 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 | 3riku.jp ⭐ | ||||||
| A | 180.131.140.46🇯🇵 AS131921180.131.140.0/22 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| PTR | ipponmatsu-hall.jp | ||||||
| MX | mail.3riku.jp ⭐ | ||||||
| A | 180.131.140.46🇯🇵 AS131921180.131.140.0/22 GMO CLOUD K.K. GMO GlobalSign Holdings K.K. | ||||||
| PTR | ipponmatsu-hall.jp | ||||||
| TXT | v=spf1 ip4:180.131.140.46 -all | ||||||
| SOA | ns.namedserver.netroot@namedserver.net serial=2220507047 | ||||||
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1785752102 | ||||||
MX for
3riku.jp |
Subdomains
Same first word
DNS History
6 records (5 active, 1 former)
●NSns.namedserver.net2015-08-25 → 2026-08-03 · 2 obs
● 2026-08-03 10:22:24
●NSns2.namedserver.net2015-08-25 → 2026-08-03 · 2 obs
● 2026-08-03 10:22:24
●MX3riku.jp2015-08-25 → 2026-08-03 · 2 obs
● 2026-08-03 10:22:24
●MXmail.3riku.jp2026-05-29 → 2026-08-03 · 3 obs
● 2026-05-29 16:32:24
● 2026-08-03 10:22:24
●A180.131.140.462026-05-29 → 2026-08-03 · 3 obs
● 2026-05-29 16:32:24
● 2026-08-03 10:22:24
○A180.222.184.202015-08-25 → 2017-08-19 · 4 obs
● 2017-08-19 06:06:14
○ 2026-05-29 16:32:24
○ 2026-08-03 10:22:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | h.dns.jp, e.dns.jp, f.dns.jp, a.dns.jp... | - |
| 3riku.jp | ns.namedserver.net, ns2.namedserver.net | - |
✅ Authoritative Response
Server:157.120.112.212
NS records: ns.namedserver.net, ns2.namedserver.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 3riku.jp (unsigned zone)
⏱️ Timing
Total: 1326ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 180.131.140.46 |
| NS | 2 | ns2.namedserver.net, ns.namedserver.net |
| MX | 2 | 3riku.jp (pri: 100), mail.3riku.jp (pri: 100) |
| TXT | 1 | v=spf1 ip4:180.131.140.46 -all |
| SOA | 1 | ns.namedserver.net root.namedserver.net |
Analysis
Hierarchy
The parent domain of mail.3riku.jp and www.3riku.jp is 3riku.jp.
Mail Server Role
The MX record for 3riku.jp points back to 3riku.jp — it is its own mail server.
mail.3riku.jp is a mail server commonly deployed alongside 3riku.jp.
IP Addresses
3riku.jp directs to one IP number, which is 180.131.140.46.
rtts-yoyaku.com, mail.3riku.jp, www.3riku.jp and mail.rtts-yoyaku.com are examples of host names that share IP numbers with 3riku.jp.
Name Servers
Two name servers handle the delegation for 3riku.jp: ns2.namedserver.net and ns.namedserver.net.
3riku.jp has the same name server delegation as a number of other domains, such as ptr105.ptrcloud.net, isk-learning.com, daiya-tsusho.co.jp and two more.
3riku.jp is at least partially co-delegated on name servers with other domains, such as 120.28.157.210.in-addr.arpa.
ns2.namedserver.net and ns.namedserver.net both direct to 157.120.112.212, 157.120.113.212 and 157.120.114.212, all three IP addresses being shared between the two hosts.
ns2.namedserver.net along with ns.namedserver.net each resolve to 157.120.112.212 IP addresses.
ns2.namedserver.net along with ns.namedserver.net each resolve to 157.120.113.212 IP addresses.
ns2.namedserver.net along with ns.namedserver.net each resolve to 157.120.114.212 IP addresses.
Mail Servers
3riku.jp relies on two mail servers for delivery — 3riku.jp and mail.3riku.jp.
3riku.jp directs to 180.131.140.46, as does mail.3riku.jp — both hostnames resolve to that one IP address.
3riku.jp along with mail.3riku.jp each resolve to 180.131.140.46 IP addresses.