rtk-co.jp - robtex.com
rtk-co.jp
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=1777079703 | ||||||
PTR for
Same first word
rtk-co.jp |
Similar names
DNS History
8 records (5 active, 3 former)
○NSns01.domainserver.ne.jp2015-08-04 → 2018-01-04 · 4 obs
● 2018-01-04 15:46:34
○ 2026-03-09 11:07:20
○ 2026-04-25 01:36:24
○NSns02.domainserver.ne.jp2015-08-04 → 2018-01-04 · 4 obs
● 2018-01-04 15:46:34
○ 2026-03-09 11:07:20
○ 2026-04-25 01:36:24
●NSns03.domainserver.ne.jp2026-03-09 → 2026-04-25 · 3 obs
● 2026-03-09 11:07:20
● 2026-04-25 01:36:24
●NSns04.domainserver.ne.jp2026-03-09 → 2026-04-25 · 3 obs
● 2026-03-09 11:07:20
● 2026-04-25 01:36:24
●MXmxjp1.nospamcloud.com2015-08-04 → 2026-04-25 · 2 obs
● 2026-04-25 01:36:24
●MXmxjp2.nospamcloud.com2015-08-04 → 2026-04-25 · 2 obs
● 2026-04-25 01:36:24
●A103.241.128.2432026-03-09 → 2026-04-25 · 3 obs
● 2026-03-09 11:07:20
● 2026-04-25 01:36:24
○A103.241.130.1592015-08-04 → 2018-01-04 · 4 obs
● 2018-01-04 15:46:34
○ 2026-03-09 11:07:20
○ 2026-04-25 01:36:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, a.dns.jp, b.dns.jp, g.dns.jp... | - |
| rtk-co.jp | ns03.domainserver.ne.jp, ns04.domainserver.ne.jp | - |
✅ Authoritative Response
Server:103.241.128.14
NS records: ns03.domainserver.ne.jp, ns04.domainserver.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rtk-co.jp (unsigned zone)
⏱️ Timing
Total: 1509ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.241.128.243 |
| NS | 2 | ns03.domainserver.ne.jp, ns04.domainserver.ne.jp |
| MX | 2 | mxjp1.nospamcloud.com (pri: 5), mxjp2.nospamcloud.com (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +ip4:103.241.128.0/22 incl |
| SOA | 1 | ns04.domainserver.ne.jp rs\.kanri.radix. |
Analysis
IP Addresses
rtk-co.jp points to a single IP: 103.241.128.243.
Other host names, for instance dopa.jp, takesystem.co.jp, eslife.jp, e-return.jp and kobayashi-dengyo.co.jp share IP numbers with rtk-co.jp.
Name Servers
Two name servers ns03.domainserver.ne.jp and ns04.domainserver.ne.jp handle delegation for rtk-co.jp.
rtk-co.jp uses the same name server setup as other domains, for example sagamikensou.com, purerose.net, ams-corporation.co.jp, one-justice.jp and miyahara-s.com.
rtk-co.jp partially shares name servers with other domains, such as ksbee.jp and jmacs.jp.
Host names with one IP number: The host name ns03.domainserver.ne.jp points to 103.241.128.14 and the host name ns04.domainserver.ne.jp points to 52.198.169.240.
Mail Servers
rtk-co.jp is handled by two mail servers: mxjp1.nospamcloud.com and mxjp2.nospamcloud.com.
rtk-co.jp has the same mail server setup as other domains, including minorasupartners.co.jp, ymmn.jp, sano-ken.co.jp, tbone.jp and japan-sc.co.jp.
rtk-co.jp shares some mail servers with other domains, at least partially, such as kanaenet.co.jp, sys-soken.co.jp, suiseki-assn.gr.jp, ads-kazama.co.jp and shinyaku.com.
Host names with six IPs: mxjp1.nospamcloud.com points to 27.112.109.252, 27.112.111.177, 111.68.23.114, 111.68.23.116, 111.68.23.126 and 175.45.142.100. Host names with one IP: mxjp2.nospamcloud.com points to 175.45.136.46.