sys-eng.co.jp - robtex.com
sys-eng.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.205.23.54🇯🇵 AICS157.205.22.0/23 OTSUKA CORPORATION X-Keiro: noc@aics.ad.jp X-Keiro: JPIRR-alert@ml.aics.ad.jp | ||||||
| PTR | websvr157-205-23-54.alpha-prm.jp | ||||||
| NS | skydns99.otsuka-office365.jp ⭐ | ||||||
| A | 157.205.203.139🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | skymst11.otsuka-office365.jp | ||||||
| NS | skydns11.otsuka-office365.jp | ||||||
| A | 157.205.203.141🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | skydns11.otsuka-office365.jp | ||||||
| NS | skydns12.otsuka-office365.jp | ||||||
| A | 157.205.160.35🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | skydns12.otsuka-office365.jp | ||||||
| NS | skydns13.otsuka-office365.jp | ||||||
| A | 157.205.160.51🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | skydns13.otsuka-office365.jp | ||||||
| MX | mgf.cybermail.jp ⭐ | ||||||
| A | 27.121.5.163🇯🇵 TOKAI-NETWORK27.121.0.0/19 TOKAI-NET | ||||||
| PTR | mgf.cybermail.jp | ||||||
| TXT | MS=ms63361900 | ||||||
| TXT | v=spf1 include:spf.protection.outlook.com ip4:157.205.23.54/32 include:spfcm.... | ||||||
| SOA | skydns99.otsuka-office365.jphostmaster@otsuka-office365.jp 2025-11-25 #2 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
Subdomains
www.sys-eng.co.jp |
Same first word
Similar names
DNS History
12 records (6 active, 6 former)
○NSfjkdns01.alpha-prm.jp2018-11-20 → 2018-11-20 · 3 obs
○ 2026-02-15 19:17:02
○ 2026-04-24 22:47:46
○NSfjkdns02.alpha-prm.jp2018-11-20 → 2018-11-20 · 3 obs
○ 2026-02-15 19:17:02
○ 2026-04-24 22:47:46
○NSfjkdns03.alpha-prm.jp2018-11-20 → 2018-11-20 · 3 obs
○ 2026-02-15 19:17:02
○ 2026-04-24 22:47:46
○NSfjkmst01.alpha-prm.jp2018-11-20 → 2018-11-20 · 3 obs
○ 2026-02-15 19:17:02
○ 2026-04-24 22:47:46
●NSskydns11.otsuka-office365.jp2026-02-15 → 2026-04-24 · 3 obs
● 2026-02-15 19:17:02
● 2026-04-24 22:47:46
●NSskydns12.otsuka-office365.jp2026-02-15 → 2026-04-24 · 3 obs
● 2026-02-15 19:17:02
● 2026-04-24 22:47:46
●NSskydns13.otsuka-office365.jp2026-02-15 → 2026-04-24 · 3 obs
● 2026-02-15 19:17:02
● 2026-04-24 22:47:46
●NSskydns99.otsuka-office365.jp2026-02-15 → 2026-04-24 · 3 obs
● 2026-02-15 19:17:02
● 2026-04-24 22:47:46
●MXmgf.cybermail.jp2026-02-15 → 2026-04-24 · 3 obs
● 2026-02-15 19:17:02
● 2026-04-24 22:47:46
○MXmxi.alpha-prm.jp2018-11-20 → 2018-11-20 · 3 obs
○ 2026-02-15 19:17:02
○ 2026-04-24 22:47:46
●A157.205.23.542026-02-15 → 2026-04-24 · 3 obs
● 2026-02-15 19:17:02
● 2026-04-24 22:47:46
○A182.93.117.1822018-11-20 → 2018-11-20 · 3 obs
○ 2026-02-15 19:17:02
○ 2026-04-24 22:47:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| sys-eng.co.jp | skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp | 3 records |
✅ Authoritative Response
Server:157.205.203.141
NS records: skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sys-eng.co.jp (unsigned zone)
⏱️ Timing
Total: 742ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 157.205.23.54 |
| NS | 3 | skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp... |
| MX | 1 | mgf.cybermail.jp (pri: 10) |
| TXT | 2 | MS=ms63361900, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | skydns99.otsuka-office365.jp hostmaster. |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp)
Analysis
Hierarchy
sys-eng.co.jp is the parent of www.sys-eng.co.jp.
IP Addresses
sys-eng.co.jp resolves to one IP number: 157.205.23.54.
Other host names such as www.sys-eng.co.jp and websvr157-205-23-54.alpha-prm.jp share IP numbers with sys-eng.co.jp.
Name Servers
sys-eng.co.jp is delegated to four name servers: skydns11.otsuka-office365.jp, skydns12.otsuka-office365.jp, skydns13.otsuka-office365.jp and skydns99.otsuka-office365.jp.
sys-eng.co.jp at least partially shares name servers with other domains, for instance spoip.com, jba.or.jp, airtech.co.jp, izumi-co.com and m-partners.co.jp.
Host names with one IP number: skydns11.otsuka-office365.jp points to 157.205.203.141; skydns12.otsuka-office365.jp points to 157.205.160.35; skydns13.otsuka-office365.jp points to 157.205.160.51; skydns99.otsuka-office365.jp points to 157.205.203.139.
Mail Servers
sys-eng.co.jp is handled by a single mail server, mgf.cybermail.jp.
sys-eng.co.jp shares the same mail server setup as other domains, for instance osakacity-hp.or.jp, ichiken.co.jp, itatsu.co.jp, jupiter-2.iwatsu.co.jp and probizmo.co.jp.
sys-eng.co.jp shares some mail servers with other domains, at least partially, for instance fxbroadnet.com, artnature.co.jp, okumura-kikai.co.jp, dsb-is.co.jp and daiko-sb.co.jp.
mgf.cybermail.jp resolves to IP 27.121.5.163.