case-study.co.jp - robtex.com
case-study.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.7.44.243🇯🇵 GMO-INTERNET157.7.40.0/21 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | users206.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@case-study.co.jp serial=1776036738 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
Same first word
case-study.biz |
case-study.net |
case-study.eu |
case-study.de |
case-study.com |
case-study.co.jp |
case-study.co.uk |
case-study.hu |
DNS History
7 records (5 active, 2 former)
○MXmail20.heteml.jp2018-07-29 → 2018-07-29 · 3 obs
○ 2026-04-01 15:51:34
○ 2026-04-12 23:39:38
●MXmx-proxy501.heteml.jp2026-04-01 → 2026-04-12 · 3 obs
● 2026-04-01 15:51:34
● 2026-04-12 23:39:38
●MXmx-proxy502.heteml.jp2026-04-01 → 2026-04-12 · 3 obs
● 2026-04-01 15:51:34
● 2026-04-12 23:39:38
○A157.7.188.2142018-07-29 → 2018-07-29 · 3 obs
○ 2026-04-01 15:51:34
○ 2026-04-12 23:39:38
●A157.7.44.2432026-04-01 → 2026-04-12 · 3 obs
● 2026-04-01 15:51:34
● 2026-04-12 23:39:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | f.dns.jp, h.dns.jp, d.dns.jp, a.dns.jp... | - |
| case-study.co.jp | dns1.heteml.jp, dns0.heteml.jp | 2 records |
✅ Authoritative Response
Server:157.7.188.149
NS records: dns1.heteml.jp, dns0.heteml.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for case-study.co.jp (unsigned zone)
⏱️ Timing
Total: 714ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.7.44.243 |
| NS | 2 | dns1.heteml.jp, dns0.heteml.jp |
| MX | 2 | mx-proxy502.heteml.jp (pri: 20), mx-proxy501.heteml.jp (pri: 10) |
| TXT | 1 | v=spf1 include:_spf.heteml.jp ~all |
| SOA | 1 | dns0.heteml.jp hostmaster.case-study.co. |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns0.heteml.jp, dns1.heteml.jp)
Analysis
IP Addresses
case-study.co.jp points to IP number: 157.7.44.243.
Other host names such as hostmaster.ishiinaika-cl.com, marronnier.net, mx.glambeast.com, koncre.co.jp and promed-com.jp share IPs with case-study.co.jp.
Name Servers
case-study.co.jp is delegated to two name servers: dns0.heteml.jp and dns1.heteml.jp.
case-study.co.jp shares the same name server setup as n-og.com, rooty.jp, ouroboros.tv, urving.co.jp and onetrust.co.jp.
case-study.co.jp shares some name servers with other domains, for instance oralcare-news.com.
Host names with a single IP:
dns0.heteml.jp points to 157.7.44.53.
dns1.heteml.jp points to 157.7.188.149.
Mail Servers
case-study.co.jp is handled by two mail servers: mx-proxy501.heteml.jp and mx-proxy502.heteml.jp.
The mail server setup for case-study.co.jp matches that of other domains, for instance taro.org, chiten.org, exxsus.com, tanei-ah.com and printings.jp.
Host names with a single IP:
mx-proxy501.heteml.jp points to 157.7.189.17.
mx-proxy502.heteml.jp points to 157.7.189.18.