isteel.jp - robtex.com
isteel.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 160.16.205.133🇯🇵 SAKURA-B160.16.128.0/17 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | da65.willnet.ad.jp | ||||||
| NS | ns1.willnet.ne.jp ⭐ | ||||||
| A | 163.43.103.130🇯🇵 SAKURA-B163.43.0.0/16 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | ns1.willnet.ne.jp | ||||||
| NS | ns2.willnet.ne.jp | ||||||
| A | 133.18.128.93🇯🇵 KAGOYAJAPAN133.18.0.0/16 KAGOYA Japan Inc. | ||||||
| MX | mail.isteel.jp(10) | ||||||
| A | 160.16.205.133🇯🇵 SAKURA-B160.16.128.0/17 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan | ||||||
| PTR | da65.willnet.ad.jp | ||||||
| SOA | ns1.willnet.ne.jphostmaster@willnet.ne.jp 2021-10-21 #3 | ||||||
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=1784309402 | ||||||
Subdomains
mail.isteel.jp |
Same first word
isteel.fi |
isteel.org |
isteel.net |
isteel.co |
isteel.de |
isteel.jp |
isteel.co.in |
isteel.ca |
isteel.mobi |
isteel.com |
isteel.in |
isteel.be |
isteel.es |
isteel.it |
isteel.ph |
isteel.info |
Similar names
DNS History
6 records (4 active, 2 former)
●NSns1.willnet.ne.jp2015-07-07 → 2026-07-17 · 2 obs
● 2026-07-17 17:50:58
●NSns2.willnet.ne.jp2015-07-07 → 2026-07-17 · 2 obs
● 2026-07-17 17:50:58
●MXmail.isteel.jp2015-07-07 → 2026-07-17 · 2 obs
● 2026-07-17 17:50:58
○A123.108.7.1502015-07-07 → 2017-03-28 · 4 obs
● 2017-03-28 19:10:00
○ 2020-02-19 05:47:06
○ 2026-07-17 17:50:58
●A160.16.205.1332026-06-27 → 2026-07-17 · 3 obs
● 2026-06-27 23:50:08
● 2026-07-17 17:50:58
○A163.43.91.282020-02-19 → 2020-02-19 · 4 obs
● 2020-02-19 05:47:06
○ 2026-06-27 23:50:08
○ 2026-07-17 17:50:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | g.dns.jp, f.dns.jp, c.dns.jp, d.dns.jp... | - |
| isteel.jp | ns1.willnet.ne.jp, ns2.willnet.ne.jp | 2 records |
✅ Authoritative Response
Server:133.18.128.93
NS records: ns1.willnet.ne.jp, ns2.willnet.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for isteel.jp (unsigned zone)
⏱️ Timing
Total: 1251ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 160.16.205.133 |
| NS | 2 | ns1.willnet.ne.jp, ns2.willnet.ne.jp |
| MX | 2 | mail.isteel.jp (pri: 0), mail.isteel.jp (pri: 10) |
| SOA | 1 | ns1.willnet.ne.jp hostmaster.willnet.ne. |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.willnet.ne.jp, ns1.willnet.ne.jp)
Analysis
Hierarchy
The domain mail.isteel.jp falls under the parent isteel.jp.
IP Addresses
isteel.jp resolves to one IP address: 160.16.205.133.
suzukaze.net, mail.mimura-inc.co.jp, mail.dainihon-kateiongaku.co.jp and two other host names share IP numbers with isteel.jp.
Name Servers
isteel.jp uses two name servers for its delegation: ns1.willnet.ne.jp and ns2.willnet.ne.jp.
isteel.jp uses the same name servers as several other domains — among them acty.tv, architecturelink.jp, room-shizuoka.com and two more.
The name servers for isteel.jp are partially shared with other domains like takano-st.co.jp, drone-base.net and remss.jp
Each of ns1.willnet.ne.jp and ns2.willnet.ne.jp has one IP address: ns1.willnet.ne.jp uses 163.43.103.130 and ns2.willnet.ne.jp uses 133.18.128.93.
Mail Servers
Mail for isteel.jp is handled by a single mail server, mail.isteel.jp.
mail.isteel.jp directs to just one IP number, 160.16.205.133.